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Jay Noren (Wayne State University)27/07/2009, 08:30
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Dr Lyn Evans (CERN)27/07/2009, 08:40
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Jim Shank (Boston University)27/07/2009, 09:10
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Gregory Rakness (UCLA)27/07/2009, 09:30
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Eddy Jans (NIKHEF)27/07/2009, 10:10
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John Harris (Yale)27/07/2009, 10:30
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Sunil Golwala (Caltech)27/07/2009, 11:00
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Aaron Pierce (Michigan)27/07/2009, 11:30
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Michael Martens (Fermilab)27/07/2009, 14:00Accelerator PhysicsThis is a talk on the challenges of beamlines and targeting for neutrino production using multi-megawatt beamlines. Discussed are lessons from NuMI operations at Fermilab and concerns related to future and proposed beamlines such as NOvA, CNGS, JPARC, and LBNE.Go to contribution page
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Elizabeth Hays (NASA/GSFC)27/07/2009, 14:00Particle Astrophysics and CosmologyThe Fermi Gamma-ray Space Telescope has been surveying the gamma-ray sky since August 2008. The Large Area Telescope detects gamma rays over a wide field of view, ~2.4 sr, across a broad energy range, from ~20 MeV to above 300 GeV, and with excellent angular resolution, 68% containment of better than 1 deg at 1 GeV. The capabilities of the LAT have opened a new window for exploring high energy...Go to contribution page
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Alakabha Datta (University of Mississippi)27/07/2009, 14:00CP-violationI will describe several CP violating signals in B decays like direct CP violation, mixing induced CP violation and Triple Product Asymmetry. I will discuss CP violating measurements involving b-> s transitions. I will particularly focus on measurements made on penguin decays like B-> phi K_s, B-> K pi and on B_s mixing.Go to contribution page
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Mary Bishai (Brookhaven National Laboratory)27/07/2009, 14:00Neutrino PhysicsMan-made sources of neutrinos from nuclear reactors and particle accelerators provide a well understood source of neutrinos. Reactors are a powerful source of anti-electron neutrinos with energies in the 0.1 - 10 MeV range and a flux of order 10^20 neutrinos/GWth. High intensity proton accelerators produce high purity muon neutrino and anti-muon neutrino beams with energies in the range...Go to contribution page
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Andrew Haas (SLAC)27/07/2009, 14:00Beyond the Standard ModelLarge datasets from the D0 and CDF experiments at the Fermilab Tevatron have been used to search for evidence of beyond-SM physics. Direct searches for new particles and interactions resulting from specific models such as SUSY and Large Extra Dimensions will be discussed, as well as "model independent" searches.Go to contribution page
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Dr Walker Devin (University of California - Berkeley)27/07/2009, 14:00Top Quark PhysicsThe LHC at design luminosity will generate 80 million top quark pairs which can be suitably tagged by the experimental collaborations. Because of the close connection between the electroweak symmetry breaking scale and their mass, these top quarks can be used as a probe of new physics at the LHC. In this talk, we review what new physics can be potentially discovered with top quark pairs...Go to contribution page
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Dr Radja Boughezal (Univ. of Zurich)27/07/2009, 14:00Higgs PhysicsWe review the most recent theoretical developments for the Standard Model Higgs production in Hadron Colliders.Go to contribution page
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Ken Bloom (University of Nebraska-Lincoln)27/07/2009, 14:00Computing in HEPEach LHC experiment will produce datasets with sizes of order one petabyte per year. All of this data must be stored, processed, transferred, simulated and analyzed, which requires a computing system of a larger scale than ever mounted for any particle physics experiment, and possibly for any enterprise in the world. I will discuss how CMS has chosen to address these challenges,...Go to contribution page
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Bing An Li (University of Kentucky)27/07/2009, 14:00Heavy Flavor Physics [bottom, charm, tau]\documentstyle[12pt]{article} \def\today{} \textwidth 18.3cm \textheight 23.2cm \setlength{\oddsidemargin}{-1.0cm} \setlength{\evensidemargin}{-1.0cm} \topmargin -1.50cm \begin{document} \title{$\Upsilon(1S)\rightarrow \gamma( \eta', \eta, f_2(1270))$ decays } \author{Bing An Li\\Department of Physics, Univ. of Kentucky, Lexington, USA} %KY, 40506, USA} \maketitle In this talk the...Go to contribution page
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Turgun Nigmanov (University of Pittsburgh)27/07/2009, 14:24Heavy Flavor Physics [bottom, charm, tau]The Bc meson, composed of two heavy quarks of distinct flavor, provides a very interesting system to study. CDF experiment is the leading contributor to the experimental studies of Bc mesons, with measurements of both production and decay properties. We report amongst other results the measurement of production cross section and lifetime, using semileptonic Bc -> J/psi mu X decays.Go to contribution page
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Brian Humensky (University of Chicago)27/07/2009, 14:25Particle Astrophysics and CosmologyThe Very Energetic Radiation Imaging Telescope Array System (VERITAS) provides unprecedented flux sensitivity in the energy regime 100 GeV - 30 TeV to the northern hemisphere gamma-ray sky. The array consists of four 12 m class imaging atmospheric Cherenkov telescopes and is located at Whipple Observatory in southern Arizona. VERITAS addresses a wide range of astrophysical phenomena including...Go to contribution page
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Dr Linda Coney (UC Riverside)27/07/2009, 14:30Accelerator PhysicsMuon ionization cooling provides the only practical solution to prepare high brilliance beams necessary for a neutrino factory or muon colliders. The muon ionization cooling experiment (MICE)* is under development at the Rutherford Appleton Laboratory (UK). It comprises a dedicated beam line to generate a range of input emittance and momentum, with time-of-flight and Cherenkov detectors to...Go to contribution page
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Roger Wendell (Duke University)27/07/2009, 14:30Neutrino PhysicsIn contrast to the predictions of the Standard Model of particle physics, experimental data now indicate that neutrinos are massive and undergo flavor oscillations. Indeed, the oscillations of $\nu_{e}$ to $\nu_{x}$ within the sun are now the favored explanation for the discrepancy between the Standard Solar Model's electron neutrino flux prediction and the flux measurements of the solar...Go to contribution page
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Alden Stradling (UT Arlington)27/07/2009, 14:30Computing in HEPIn anticipation of the calibration, performance, and physics activities that will be performed on the LHC first data, the ATLAS experiment is continuously refining elements of its Computing and Analysis Models. We will present an overview of some of recent developments in ATLAS computing, including the current resource estimates for Tier 1 and 2s, issues related to the establishment of Tier...Go to contribution page
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Mr Himansu Sahoo (University of Hawaii)27/07/2009, 14:30CP-violationWe report measurements of time-dependent $CP$-violation parameters in radiative modes where a $B^0$ meson decays to $\phi K_S^0 \gamma$, $\omega K_S^0 \gamma$, $K_S^0 \rho^0 \gamma$ and $K_S^0 \pi^0 \gamma$ final states. These results are based on a large data sample collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB energy-asymmetric $e^+e^-$ collider and are...Go to contribution page
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Mr Zaki Shalhout (Wayne State University)27/07/2009, 14:35Higgs PhysicsWe present a search for associated production of a standard model (SM) Higgs boson and a Z boson where the Z decays to two leptons and the Higgs decays into a pair of b quarks, p-pbar->ZH->llbb. We explore techniques not currently used in other Higgs searches at CDF. We utilize SM matrix elements to calculate event probabilities rather than utilizing them as a discriminant variable. Using...Go to contribution page
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Mr Rob Forrest (UC Davis)27/07/2009, 14:40Beyond the Standard ModelThe production of chargino-neutralino pairs and their subsequent leptonic decays is one of the most promising supersymmetry (SUSY) signatures at the Tevatron proton-antiproton collider. We present here the most recent results on the search for the three-lepton and missing-transverse-energy SUSY signature using data collected with the CDF II detector. The results are interpreted within the...Go to contribution page
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Mr Leandro Almeida (Stony Brook University)27/07/2009, 14:40Top Quark PhysicsStudy of high-pt jets from QCD and from highly-boosted massive particles such as tops, W, Z and Higgs, and argue that infrared-safe observables can help reduce QCD backgrounds. Jets from QCD are characterized by different patterns of energy flow compared to the products of highly-boosted heavy particle decays, and we employ a variety of jet shapes, observables restricted to energy flow within...Go to contribution page
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Dr Francesco Dettori (Universitร degli Studi di Cagliari / INFN)27/07/2009, 14:48Heavy Flavor Physics [bottom, charm, tau]We report on the perspective measurements of inclusive particle production in high-energy pp collisions with data to be collected by the LHCb experiment at CERN's LHC. These include V0 and D meson production studies, which can be based on a minimum bias sample, as well as charmonia production studies, which need a muon-triggered samples. Using reconstructed J/psi -> mu+mu- decays, both the...Go to contribution page
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Rupak Dutta (University of Kentucky)27/07/2009, 14:50CP-violationCKM mechanism of a single CP-violating phase has been confirmed by various $B$ decay data over the decade. Yet, the existence of new physics effects can not be ruled out. In this context, we consider the branching ratios and CP asymmetries in two theoretically clean modes, namely in $B\to f_0(980) K_S$ and $B \to \phi K_S$ decays, to the end of determining the deviation of time dependent...Go to contribution page
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corbin covault (Case Western Reserve University)27/07/2009, 14:50Particle Astrophysics and CosmologyThe Pierre Auger Observatory is the world's largest detector for the highest energy cosmic rays. The astrophysical origins of these particles have remained a persistent mystery for decades. However, recent results from Auger indicate that we may be on the threshold of a new understanding. The Pierre Auger Observatory, in Malargue, Argentina, has been operating since 2004. We describe the...Go to contribution page
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Gavril Giurgiu (Johns Hopkins)27/07/2009, 14:55Top Quark PhysicsHigh mass resonance decaying into ttbar pairs appear in many extensions of the Standard Model. The top quarks from these decays have high transverse momentum and their decay products are typically bunched together due to the boost into the lab frame. As a result the standard techniques for reconstructing ttbar events begin to fail. In this talk we will discuss the prospects for detecting...Go to contribution page
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Mr Alexander Sood (Rutgers, The State University of New Jersey)27/07/2009, 15:00Beyond the Standard ModelUsing supersymmetry search with trileptons as an example, we address the problem of discerning new physics when it manifests itself in multiple channels simultaneously with several models vying to accommodate the findings. This is best achieved by presenting experimental results in a model- independent fashion, but suitably parametrized to allow for their interpretation in most models....Go to contribution page
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Dr Darren Price (Indiana University)27/07/2009, 15:00Higgs PhysicsWe present a search for the Standard Model Higgs boson produced in association with a W boson in p-pbar collisions at a center-of-mass energy of sqrt(s) = 1.96 TeV. The search is performed in the WH->lnubb channel using the latest amount of data collected by the CDF detector at the Fermilab Tevatron. An artificial neural network is employed to improve the separation between signal and...Go to contribution page
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Byeongsu Yang (Seoul National University)27/07/2009, 15:00Neutrino PhysicsThe full Super-Kamiokande-III data-taking period, which ran from August of 2006 through August of 2008, yielded 298 live days worth of solar neutrino data with a lower total energy threshold of 4.5 MeV. During this period we made many improvements to the experiment's hardware and software, with particular emphasis on its water purification system and Monte Carlo simulations. As a result of...Go to contribution page
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Dr Dazhang Huang (Illinois Institute of Technology)27/07/2009, 15:00Accelerator PhysicsIn the process of ionization cooling, as a charged particle passes through an absorber, it induces a wake field by polarizing the absorber medium. If the beam density is sufficiently high (as may be the case in certain aggressive cooling approaches), this could result in beam-intensity-dependent effects, which are not taken into account in past and current studies. To understand this effect...Go to contribution page
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Dr Burt Holzman (CMS)27/07/2009, 15:00Computing in HEPThe Open Science Grid (OSG) enables collaborative science by providing a national cyber-infrastructure of distributed computing and storage resources. The goal of the OSG is to transform processing and data intensive science through a cross-domain, self-managed, nationally distributed cyber-infrastructure that brings together campus and community resources. The High Energy Physics community...Go to contribution page
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Sudhir Gupta (Iowa State)27/07/2009, 15:10Top Quark PhysicsWe study the T odd correlations induced by CP violating anomalous top quark couplings at both production and decay level in the process gg --> t t_bar --> (b mu+ nu_mu) (b_bar mu- nu_mu_bar). We consider several counting asymmetries at the parton level and find the ones with the most sensitivity to each of these anomalous couplings at the LHC.Go to contribution page
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Dr Enrico Lunghi (Indiana University)27/07/2009, 15:10CP-violationWe consider several hints for new physics involving CP-asymmetries in B-decays and interpret them in terms of generic contributions to effective Wilson coefficients. The effects we focus on are: the differences in the fitted value of sin(2 beta) versus the ones directly measured via the time dependent CP asymmetries in B -> J/psi K or via B -> (phi,eta') K; the difference between the direct CP...Go to contribution page
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Prof. Klaus HONSCHEID (Ohio State University)27/07/2009, 15:12Heavy Flavor Physics [bottom, charm, tau]We present preliminary results for branching fraction measurements of the decays D0 --> V eta where V is a phi, omega or K*. We use a high statistics data sample collected with the BaBar detector at the PEP-II asymmetric e+ e- collider at SLAC.Go to contribution page
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Prof. Richard Hughes (The Ohio State University and The Fermi LAT Collaboration)27/07/2009, 15:15Particle Astrophysics and CosmologyDesigned as a high-sensitivity gamma-ray observatory, the Fermi Large Area Telescope (LAT) can also identify high-energy cosmic ray electrons and protons with angular resolution of better than one degree above 50 GeV. The statistics of such samples are quite large, with several million identified protons and electrons in 10 months of data. We discuss the prospects for measuring anisotropies...Go to contribution page
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Jennifer Raaf (Boston University)27/07/2009, 15:20Neutrino PhysicsWe present recent results from analyses of atmospheric neutrino data using the Super-Kamiokande water Cherenkov detector, which has a fiducial volume of 22,500 tons of ultra-pure water. Data from three major running periods of SK are used in the analyses.Go to contribution page
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Mr Eunsin Lee (Texas A&M University)27/07/2009, 15:20Beyond the Standard ModelModels of supersymmetry predict new heavy, neutral particles, known as a neutralino, that can decay to a photon and the lightest supersymmetric particle, the gravitino. We present a search for these particles in proton anti-proton collisions at sqrt{s}=1.96 TeV at the Collider Detector at Fermilab. After years of data taking we find no evidence for this process and set the...Go to contribution page
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Mr David Cox (University of California, Davis)27/07/2009, 15:25Top Quark PhysicsIn the 15 years since the discovery of top at the Tevatron the data available has reached the point where we can perform in depth examinations of the top quark event sample for evidence of physics beyond the Standard Model. We present a search for a massive quark (t') decaying to Wq and thus mimicking the top quark decay signature. We use the reconstructed mass of the t' quark and the scalar...Go to contribution page
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Dr Bodhitha Jayatilaka (Duke University)27/07/2009, 15:25Higgs PhysicsWe present a search for the Standard Model Higgs boson produced in association with a Z or a W boson in p-pbar collisions at a center-of-mass energy of sqrt(s) = 1.96 TeV. The search is made using the latest amount of data collected by the CDF detector at the Fermilab Tevatron. We consider the scenario where the Higgs boson decays into a b-bbar pair and either the Z decays into neutrinos or...Go to contribution page
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Dr Shawn McKee (University of Michigan)27/07/2009, 15:30Computing in HEPLarge-scale computing in ATLAS is based on a grid-linked system of tiered computing centers. The ATLAS Great Lakes Tier-2 came online in Sept., 2006 and now is commissioning with full capacity to provide significant computing power and services to the USATLAS community. Our Tier-2 Center also hosts the Michigan Muon Calibration Center which is responsible for daily calibrations of the ATLAS...Go to contribution page
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Amarjit Soni (BNL)27/07/2009, 15:30CP-violationโ B-CP anomalies, โ4thโ generation and the LHC Abstract Although the CKM-paradigm works approximately to O(20%), there are by now several indications that suggest the need for beyond the Standard Model CP-odd phase(s). The value of sin 2ฮฒ measured via the goldplated (tree) mode, B โ ฯK s is smaller than the value deduced by using improved lattice matrix elements. The value of sin 2ฮฒ...Go to contribution page
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Mary Convery (Fermilab)27/07/2009, 15:30Accelerator PhysicsWe present the strategy which has been used recently to optimize integrated luminosity at the Fermilab Tevatron proton-antiproton collider. We use a relatively simple model where we keep the proton intensity fixed, use parameters from fits to the luminosity decay of recent stores as a function of initial antiproton intensity (stash size), and vary the stash size to optimize the integrated...Go to contribution page
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Devin Harper (University of Michigan)27/07/2009, 15:40Beyond the Standard ModelWe have studied the sensitivity of the ATLAS detector for supersymmetric neutralino signals in the Zphoton + transverce missing energy (MET) and ZZ + MET final states in the Gauge Mediation Supersymmetry Breaking (GMSB) model in which the Higgsino-like neutralino is the next-to-lightest supersymmetric particle (NLSP). The neutralino could be pair produced either directly or indirectly and...Go to contribution page
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Roberta Volpe (INFN, Sezione di Perugia-Universita & INFN, Perugia-Unknown)27/07/2009, 15:40
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Mr Patrick Smith (The Ohio State University and The Fermi LAT Collaboration)27/07/2009, 15:40Particle Astrophysics and CosmologyThe Fermi Gamma-Ray Space Telescope was launched in June 2008 and the onboard Large Area Telescope (LAT) has been collecting data since August of that same year. The LAT is currently being used to study a wide range of science topics in high-energy astrophysics, one of which is the study of high-energy cosmic rays. The LAT has recently demonstrated its ability to measure cosmic-ray electrons,...Go to contribution page
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Ryan Patterson (California Institute of Technology)27/07/2009, 15:40Neutrino PhysicsMINOS is a long baseline neutrino oscillation experiment situated along Fermilab's high-intensity NuMI neutrino beam. The beam traverses two large iron-scintillator tracking calorimeters: the 0.98 kton near detector located 1 km from the production target and the 5.4 kton far detector sited 735 km downstream in the Soudan mine in northern Minnesota. By looking for an excess of candidate...Go to contribution page
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Ms Dana LINDEMANN (McGill University)27/07/2009, 16:30Heavy Flavor Physics [bottom, charm, tau]We present the search for the radiative leptonic decay modes B+ -> e nu gamma and B+ -> mu nu gamma using data collected by the BaBar detector at the PEP-II B-factory. In this analysis, we fully reconstruct the hadronic decay of one of the B mesons from the Upsilon(4S) --> BBbar and then search for evidence of the B+ --> l+ nu gamma decay in the remaining particles...Go to contribution page
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Alexander Shemyakin (Fermilab)27/07/2009, 16:30Accelerator PhysicsA permanent โ magnet, 3.3 km 8 GeV Recycler ring is used to accumulate antiprotons and prepare them for Tevatron shots. Two cooling systems, stochastic and electron, allows increasing of the antiproton phase density by a factor of ~ 50 and storing up to 5๏1012 antiprotons with the storage efficiency above 90%. The paper will describe the status of the Recycler ring and its operation.Go to contribution page
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Dr Subhendu Chakrabarty (SUNY Stony Brook)27/07/2009, 16:30Higgs PhysicsWe present a search for the standard model Higgs boson in events with two tau leptons in p-pbar collisions at a center-of-mass energy of sqrt(s) = 1.96 TeV. The search is made using the latest amount of data collected by the CDF detector at the Fermilab Tevatron. We search in the final state of two tau leptons plus two jets. This final state is sensitive to WH and ZH where one boson decays...Go to contribution page
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Pedro Ochoa (Caltech)27/07/2009, 16:30Neutrino PhysicsThe reach of the search for electron-neutrino appearance in the MINOS far detector, a process which would manifest a non-zero value of the $\theta_{13}$ mixing angle, depends primarily on the ability to separate the signal from the backgrounds. MINOS is using two different approaches for event classification. One selector is an artificial neural network, which relies on topological variables...Go to contribution page
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Prof. Stephen Martin (Northern Illinois University)27/07/2009, 16:30Beyond the Standard ModelI will review some of the recent developments in phenomenological aspects of supersymmetric model building. The discussion will be organized around issues and models that are motivated by the supersymmetric little hierarchy problem and by constraints on and searches for dark matter.Go to contribution page
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Sasha Vanyashin (Argonne National Laboratory)27/07/2009, 16:30Computing in HEPATLAS event data processing requires access to non-event data (detector conditions, calibrations, etc.) stored in relational databases. The database-resident data are critical for the event data reconstruction processing steps and are often required for user analysis. A main focus of ATLAS database operations is on the worldwide distribution of the Conditions DB data, which are necessary for...Go to contribution page
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Prof. Klaus Honscheid (Ohio State University)27/07/2009, 16:30Particle Astrophysics and CosmologyThe discovery that the universe is accelerating, not slowing down from the mass it contains, is the surprise that sets the initial research program of 21st Century cosmology. The Dark Energy Survey is a next generation sky survey aimed directly at understanding this mystery. We will build an extremely red sensitive 500 Megapixel camera, a 1 meter diameter, 2.2 degree field of view prime focus...Go to contribution page
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Dr Julia (Jessie) Shelton (Rutgers University)27/07/2009, 16:30Top Quark PhysicsThe top quark's uniquely large Yukawa coupling hints at a special connection between the top quark and the physics responsible for electroweak symmetry breaking. If new physics at the LHC is related to the electroweak hierarchy, it will typically lead to observable polarization signals for top quarks produced in association with new physics. Signals are observable for both events with and...Go to contribution page
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Dr Alexei Varganov (the University o Michigan)27/07/2009, 16:45Top Quark PhysicsAccording to standard model top quarks decay weakly before any hadronization processes take effect. This enables top quark spin information to be transmitted to the top quark decay products. We discuss the measurement method for various decay channels and report first result for spin correlation in top pairs using dilepton events.Go to contribution page
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Amir Farbin (University of Texas, Arlington)27/07/2009, 16:50Computing in HEPAlthough in the early 90s, High Energy Physics (HEP) helped to drive the computing industry by establishing the HTTP protocol and the first web-servers, the long time-scales for planning and building modern HEP experiments has resulted in a generally slow adoption by HEP of emerging computing technologies which rapidly become commonplace in business and other scientific fields. We will review...Go to contribution page
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Sanjay Swain (Stanford University)27/07/2009, 16:50Neutrino PhysicsThe MINOS experiment at Fermilab uses two functionally identical detectors, the near detector at Fermilab and the far detector at Soudan Mine in Minnesota, to search for the muon-neutrino to electron-neutrino oscillations and potentially constrain the last unknown mixing angle in the 3-flavor lepton mixing matrix. In order to estimate the backgrounds in the far detector, where the...Go to contribution page
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Mr Manuel FRANCO SEVILLA (SLAC)27/07/2009, 16:54Heavy Flavor Physics [bottom, charm, tau]We report a measurement of the branching fractions of B -> D** l nu decays based on 417 fb-1 of data collected at the Upsilon (4S) resonance with the BABAR detector at the PEP-II e+e- storage rings. Events are selected by fully reconstructing one of the B mesons in a hadronic decay mode. A fit to the invariant mass differences m(D(*)pi) - m(D(*)) is performed to extract the signal yields...Go to contribution page
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Mr Xuebing Bu (Univ of Science and Technology of China, Hefei)27/07/2009, 16:55Higgs PhysicsWe present a search for a fermiophobic Higgs decaying to two photons. In the standard model the Higgs boson decays predominately to two bottom quarks for low Higgs masses, and the branching ratio for decays to two photons is on the order of 0.2%. However, in scenarios, where the Higgs boson only couples with other bosons, H to two photon decays are much more significant. Since the Higgs in...Go to contribution page
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Prof. Ian Shipsey (Purdue University)27/07/2009, 16:55Particle Astrophysics and CosmologyRecent technological advances have made it possible to carry out deep optical surveys of a large fraction of the visible sky. Such surveys enable a diverse array of astronomical investigations including: the search for small moving objects in the solar system, studies of the assembly history of the Milky Way, the establishment of tight constraints on models of dark energy using a variety of...Go to contribution page
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Mr Glenn Strycker (University of Michigan)27/07/2009, 17:00Top Quark PhysicsWe measure a forward-backward charge asymmetry in the rapidities of top quarks produced in $p\bar p$ collisions at $\sqrt s$=1.96 TeV. The $t\bar t$ kinematics are reconstructed in ~800 lepton+jets events collected in a 3 $fb^{-1}$ exposure with CDF detector at Fermilab. We present two independent techniques -- a model independent unfold and a likelihood fit to a linear asymmetry in the...Go to contribution page
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Dr Jean-Luc Vay (Lawrence Berkeley National Laboratory)27/07/2009, 17:00Accelerator PhysicsIt was shown recently that it can be computationally advantageous to perform computer simulations in a Lorentz boosted frame for a certain class of relativistic systems such as: free electron laser, laser-plasma accelerator, and particle beams interacting with electron clouds [1], and reduction by orders of magnitude in computer simulation run times using methods based on first-principles...Go to contribution page
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Dr Istvan Danko (University of Pittsburgh)27/07/2009, 17:10Neutrino PhysicsThe MINOS long-baseline neutrino experiment has confirmed the disappearance of accelerator muon-neutrinos and measured the $|\Delta m^2_{23}|$ mass splitting with the best precision to date. The MINOS experiment is now set to measure the disappearance of muon anti-neutrinos and their oscillation parameters, which can be used to test CPT violation and other exotic models. The magnetic field of...Go to contribution page
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Todd Adams (Department of Physics, B-159 - Florida State University)27/07/2009, 17:10Beyond the Standard ModelSupersymmetry predicts the existence of charginos and neutralinos, the partners of the gauge and Higgs bosons, which can be produced in pairs at the Tevatron. Charginos and neutralinos decay directly or in cascades into charged leptons and the lightest supersymmetric particle (LSP). Assuming R parity conservation the LSP (in this case the lightest neutralino) is stable. Due to the small...Go to contribution page
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Dr Monica Tecchio (University of Michigan)27/07/2009, 17:15Top Quark PhysicsCDF and D0 have recently reported measurements of the forward-backward asymmetry in top pair production in ppbar collisions at the Tevatron. We report here on a study of that asymmetry as a function of the invariant mass of the ttbar system. A simple unfold technique is used to propagate the laboratory measurement to the parton level simultaneously in the top quark rapidity and top-antitop...Go to contribution page
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Enrico FELTRESI (INFN Padova)27/07/2009, 17:18Heavy Flavor Physics [bottom, charm, tau]Semileptonic B decays to DXlnu (l = e or mu) are selected by reconstructing D0l and D+l combinations from a sample of 230 million Upsilon(4S) -> BB decays recorded with the BABAR detector at the PEP-II e+e- collider at SLAC. A global fit to these samples in a 3-dimensional space of kinematic variables is used to determine the branching fractions B(B- -> D0 l nu) = (2.34 +/- 0.03 +/-...Go to contribution page
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Prof. Mark Trodden (University of Pennsylvania)27/07/2009, 17:20Particle Astrophysics and CosmologyI consider couplings between the dark energy and dark matter sectors, and describe constraints arising from a combination of new instabilities, cosmological observations and the requirement of a weak coupling regime.Go to contribution page
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Dr Rahmat Rahmat (University of Mississippi)27/07/2009, 17:20Higgs PhysicsA prospective analysis is presented on the observability of the Standard Model Higgs boson produced in the Vector Boson fusion and decaying into tau-tau pair with the tau-tau->lvv+tau-jet v final state. The estimates of the upper limit on the cross section times branching ratio for 1fb-1 for the Higgs boson mass interval 115-145 GeV/c2 are given.Go to contribution page
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Dr Alexandre Sousa (Harvard University)27/07/2009, 17:30Neutrino PhysicsA search for disappearance of active neutrinos over a baseline of 735 km was conducted using the NuMI neutrino beam and the MINOS detectors. The data analyzed correspond to an exposure of 3.18x10^20 protons-on-target. The data are fitted to neutrino oscillation models in which mixing with one sterile neutrino is assumed. A comparison of the neutral-current-like spectrum at the far detector...Go to contribution page
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Prof. Daniel Kaplan (Illinois Institute of Technology)27/07/2009, 17:30Accelerator PhysicsMuon colliders and neutrino factories are attractive options for future facilities aimed at achieving the highest lepton-antilepton collision energies and precision measurements of parameters of the neutrino mixing matrix. The performance and cost of these depend sensitively on how well a beam of muons can be cooled. Recent progress in muon cooling design studies and prototype tests nourishes...Go to contribution page
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Sergey Uzunyan (Northern llinois University)27/07/2009, 17:30Beyond the Standard ModelA search for squarks and gluinos has been performed on data from ppbar collisions collected using the D0 detector at the Fermilab Tevatron. The topology analyzed consists of jets with large missing transverse energy. The search for squarks has also been performed in the topology of multijet events accompanied by large missing transverse energy and at least one tau lepton decaying...Go to contribution page
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Shabnam Jabeen (Boston University-Unknown-Unknown)27/07/2009, 17:30Top Quark PhysicsWe present recent results related to the measurement of top quark production using ppbar collisions recorded with the D0 Detector at the Tevatron. The results are: Measurement of the Wtb coupling and of the W boson helicity (abstract 220), search for anomalous top quark couplings (228) and top spin correlations (not submitted as separate abstract)Go to contribution page
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Prof. Sherwin Love (Purdue University)27/07/2009, 17:40Particle Astrophysics and CosmologyA minimal candidate for dark matter is provided by a single standard model singlet. The quantum mechanical effects of this singlet are explored in a model where the Higgs boson has a large non-minimal coupling to the Ricci scalar and plays the role of the inflaton. Imposition of the slow roll inflation cosmological constraints restricts the allowed values of the Higgs boson mass, its...Go to contribution page
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Sudarshan PARAMESVARAN (Royal Holloway, University of London)27/07/2009, 17:42Heavy Flavor Physics [bottom, charm, tau]
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Hyunsu Lee (University of Chicago)27/07/2009, 17:50Top Quark PhysicsMore than a decade after its discovery we are still trying to find out more about the nature of the top quark. The current statistics of the Tevatron allow us to make stringent tests. In this talk we will present state of the art measurements of top quark properties. By studying rates and distributions sensitive to the production and decay mechanisms of top quarks, we can search for...Go to contribution page
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Dr Andrew Blechman (University of Toronto)27/07/2009, 17:50Beyond the Standard ModelWe present a version of Gauge Mediated Supersymmetry Breaking which preserves an R-symmetry - the gauginos are Dirac particles, the A-terms are zero, and there are four Higgs doublets. This offers an alternative way for gauginos to acquire mass in the supersymmetry-breaking models of Intriligator, Seiberg, and Shih. We investigate the possibility of using R-symmetric gauge mediation to realize...Go to contribution page
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Andrew Norman (University of Virginia)27/07/2009, 17:50Neutrino PhysicsThe NOvA Experiment is a new accelerator based, long baseline, neutrino oscillation experiment which is beginning construction at Fermilab. NOvA is designed to probe with new precisions and sensitivities the theta_13 and theta_23 mixing angles of the PMNS matrix, while simultaneously having significant sensitivity to the CP violating phase delta and resolution of the neutrino mass hierarchy. ...Go to contribution page
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Dr Mary Anne Cummings (Muons, Inc.)27/07/2009, 18:00Accelerator PhysicsMANX is a six-dimensional muon ionization cooling demonstration experiment based on the concept of a helical cooling channel in which a beam of muons loses energy in a continuous helium or hydrogen absorber while passing through a special superconducting magnet called a helical solenoid. The goals of the experiment include tests of the theory of the helical cooling channel and the helical...Go to contribution page
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Mr Gagik Yeghiyan (Wayne State University)27/07/2009, 18:00Particle Astrophysics and CosmologyWe examine $\Upsilon(1S)$ meson decay into a pair of scalar Dark Matter particles and $\Upsilon(3S)$ meson decay into a pair of scalar Dark Matter particles and a photon. To the lowest order in perturbation theory, we perform model-independent analysis and derive formulae for the branching ratios of these decays. We confront our calculation results with the experimental data. We do it...Go to contribution page
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Mr TRUNG LE (STONY BROOK UNIVERSITY)27/07/2009, 18:10Neutrino PhysicsNeutrino oscillations were discovered in solar and atmospheric neutrinos experiments, and have been confirmed by experiments using neutrino beams from accelerators and nuclear reactors. It has been found that there are large mixing angles in the nue to numu and numu to nutau oscillations. The third mixing angle, which parameterizes the mixing between the first and the third family, is...Go to contribution page
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Angela Olinto (University of Chicago)28/07/2009, 09:00Particle Astrophysics and Cosmology
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Josh Frieman (FNAL)28/07/2009, 09:30Particle Astrophysics and Cosmology
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Kruse Mark (Duke University)28/07/2009, 10:00
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Heidi Schellman (Northwestern University)28/07/2009, 11:00
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Leo Bellantoni (FNAL)28/07/2009, 11:30
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Liantao Wang (Princeton)28/07/2009, 12:00
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Rishi Sharma (LANL)28/07/2009, 14:00Heavy Ion Physics/Hot and Dense QCDWe calculate the charm and beauty parton distribution functions and fragmentation functions for open heavy mesons in vacuum using their operator definitions in factorized perturbative QCD and find leading corrections that arise from the structure of the final-state hadrons. Using thermal potentials calculated on the lattice we demonstrate the existence of open heavy flavor bound state...Go to contribution page
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Prof. Kevin Pitts (University of Illinois)28/07/2009, 14:00Education and Outreach in HEPElizabeth Clements Angels & Demons: The real story behind the lecture nights On May 15, Sony Pictures released Angels & Demons, a major motion picture based on Dan Brownโs bestโselling novel. Starring Tom Hanks and directed by Ron Howard, the film focuses on an apparent plot to destroy the Vatican using antimatter made at the Large Hadron Collider and stolen from CERN. Through a series of...Go to contribution page
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Andrew York (Unknown)28/07/2009, 14:00First Results from LHCThe Compact Muon Solenoid (CMS) is one of two general purpose experiments at the Large Hadron Collider. The CMS experiment prides itself on an ambitious, all silicon based, tracking system. After almost 20 years of design and construction the CMS tracker detector has been installed and commissioned. The tracker detector consists of ten layers of silicon microstrip detectors while...Go to contribution page
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Dr Alessandro Vicini (Department of Physics, University of Milano)28/07/2009, 14:00Electroweak Physics [W/Z]The production of a pair of high-transverse-momentum leptons plays a very important role at hadron colliders: it allows the precise measurement of basic parameters of the Standard Model like the masses and decay widths of the W and Z bosons and the weak mixing angle; it provides stringent constraints on the parametrization of the proton parton density functions; it could provide a tool to...Go to contribution page
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Dr Anze Zupanc28/07/2009, 14:00Hadron SpectroscopyUsing a large data sample recorded with the Belle detector at the KEKB asymmetric energy e^+ e^- collider, we report new results on charmonium-like states produced in gamma-gamma collisions including studies of final states with multiple kaons. We also report updates on other new particles and resonances recently observed in B decays by Belle.Go to contribution page
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Dr Christopher Jackson (Argonne National Laboratory)28/07/2009, 14:00Higgs PhysicsI will review the status of the production of the Minimal Supersymmetric Standard Model (MSSM) Higgs bosons at hadron colliders. The talk will include a brief introduction to the Higgs sector of the MSSM and a summary of the state-of-the-art in the calculations of the radiatively-corrected cross sections. I will also review the current bounds on the MSSM parameter space from searches for...Go to contribution page
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Andriy Badin (Wayne State University)28/07/2009, 14:00Heavy Flavor Physics [bottom, charm, tau]We present a calculation of 1/m2b corrections to the lifetime differences of Bs mesons in the heavy-quark expansion. We find that they are small to significantly affect \Delta\GammaB_s and present the result for lifetime difference including non-perturbative 1/mb and 1/m2b corrections. We also analyze the generic B = 1 New Physics contributions to the lifetime difference of Bs mesons and...Go to contribution page
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Yagmur Torun (Illinois Institute of Technology)28/07/2009, 14:00Accelerator PhysicsThe MuCool program focuses on studying the components needed for a muon ionization cooling channel. These include normal-conducting RF cavities, liquid hydrogen and lithium hydride absorbers and superconducting solenoids. This talk will describe the facility that has been built at Fermilab to carry out this R and D, will outline the various aspects of the program and will give the latest...Go to contribution page
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Dr Oleg Kamaev (University of Minnesota)28/07/2009, 14:00Particle Astrophysics and CosmologyThe Cryogenic Dark Matter Search (CDMS) experiment uses low-temperature solid-state detectors to seek Weakly Interacting Massive Particle (WIMP) and has the world's best exclusion limit on the WIMP-nucleon spin-independent cross section. The experiment uses the ionization and athermal phonons from particle interactions to discriminate between candidate (nuclear recoil) and background (electron...Go to contribution page
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Nurcan Ozturk (University of Texas at Arlington)28/07/2009, 14:00Beyond the Standard ModelSupersymmetry (SUSY) is one of the most attractive extentions of the Standard Model. If SUSY exist in nature it can be discovered at the LHC if SUSY particles have masses at sub-TeV range. SUSY discovery strategies with early data by the ATLAS and CMS experiments are presented. SUSY mass and parameter measurements are also demonstrated.Go to contribution page
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Dr Markus Schulze (Johns Hopkins University)28/07/2009, 14:00Top Quark PhysicsThe production of top quark pairs at hadron colliders is an important process for understanding QCD dynamics and is sensitive to new physics. The data collected at the Tevatron and the sizable cross section at the Large Hadron Collider allow for precision measurements. To match the experimental precision, radiative corrections must be included in the theory predictions. We present results...Go to contribution page
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Prof. Lisa Everett (University of Wisconsin)28/07/2009, 14:00Neutrino PhysicsThis talk will provide an overview of theoretical models of neutrino masses and lepton mixing angles.Go to contribution page
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Dr Thomas Andrew Schwarz (University of California (UCD))28/07/2009, 14:15Top Quark PhysicsThe top quark is the heaviest particle yet observed. With the possibility for the massive top to couple to new physics at high energy scales, CDF has many complementary analyses in each top decay channel which provide strong tests of the standard model and physics beyond. With several fb-1 of data now accumulated at CDF, we are able to measure the top pair production rate with unprecedented...Go to contribution page
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Prof. Ilan Levine (Indiana University South Bend)28/07/2009, 14:20Particle Astrophysics and CosmologyThe COUPP collaboration* has revived the bubble chamber technique for use in WIMP dark matter search experiments. The first engineering run, which resulted in improved limits on spin-dependent WIMP-proton couplings, were reported in 2008 using a two kg target. Since then improvements including radiopurification efforts, cosmic ray vetos, design and construction of larger scale chambers (4kg,...Go to contribution page
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Kathryn Grim (Fermi National Accelerator Laboratory)28/07/2009, 14:20Education and Outreach in HEPEmerging forms of social media such as Facebook, Twitter and YouTube have become primary ways for many members of all generations to stay connected and find out about what is going on in the world around them. Particle physics communicators have begun to exploit social media to connect with their audiences. Scientists from around the world contribute to Quantum Diaries, a collection of...Go to contribution page
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Dr Ignacio Redondo28/07/2009, 14:24The first measurement of CP violation phase beta_s in Bs -> J/psi phi decays in 2007 generated considerable interest. The interest was caused by the small deviation from the SM. While not sufficiently significant, together with other measurements it is suggestive of a possible new physics contribution. In the subsequent update using 2.8 fb-1 of data collected by CDF II detector...Go to contribution page
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Dr Haidong Liu (University of California (UCD)-Unknown-Unknown)28/07/2009, 14:25Heavy Ion Physics/Hot and Dense QCDThe measurements of charmonium and bottomonium resonances in ultra-relativistic heavy-ion collisions provide crucial information on the dynamics of the created high-density QCD matter. The suppression of heavy quark-antiquark bound states is generally agreed to be one of the most direct probes of QGP formation due to screening of the color potential in the plasma. In addition, the production...Go to contribution page
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Dr Galyaev Evgeny (University of Texas at Dallas)28/07/2009, 14:25First Results from LHCThe ATLAS Pixel Detector is the innermost detector of the ATLAS experiment at the Large Hadron Collider at CERN. Approximately 80M electronic channels of the detector, made of silicon, allow detecting particle tracks and secondary vertices with very high precision. After connection of all of the cooling components and services, and verification of their operation the ATLAS Pixel Detector...Go to contribution page
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Jyotsna Osta (Notre Dame)28/07/2009, 14:30Electroweak Physics [W/Z]We present the most precise single measurement of the W boson mass and and a measurement of the W width using data collected with the D0 experiment. An integrated luminosity of 1 fb-1 yields 499,830 W->evcandidates. The mass is measured with an uncertainty of less than 45 MeV while the width uncertainty is less than 75 MeV.Go to contribution page
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Rolland Johnson (Muons, Inc.)28/07/2009, 14:30Accelerator PhysicsInventions and synergies with global and national goals are rapidly improving the prospects for a high luminosity muon collider at the energy frontier. Analytical calculations, numerical simulations, and experimental measurements are coming together to make a strong case for a series of machines to be built, where each one is a precursor to the next, with its own unique experimental and...Go to contribution page
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Alexander Friedland (Los Alamos National Laboratory)28/07/2009, 14:30Neutrino PhysicsI will review the physics of flavor transformations of supernova neutrinos. I will then discuss time dependent features in the neutrino signal caused by the changing density profile in the explosion.Go to contribution page
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Dr Kai Yi (Physics and Astronomy Department-University of Iowa-Unknown)28/07/2009, 14:35Hadron SpectroscopyWith growing datasets collected by the CDF II experiment, studies of the spectroscopy of mesons containing heavy quarks becomes more exciting. The CDF experiment has good capabilities in both charm and bottom sector. This capability allowed also to contribute to the study of the Zoo of states called X,Y,Z. In this area we present a recent update of the mass measurement of X(3872). The...Go to contribution page
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Dr Andy Haas (SLAC)28/07/2009, 14:35Higgs PhysicsWe report on a first search for production of Higgs bosons decaying into neutral long-lived particles (NLLP) which each decay to a bbbar pair, using 3.6 fb^-1 of data recorded with the D0 detector at the Fermilab Tevatron collider. We search for pairs of displaced vertices in the tracking detector at radii in the range 1.6--20 cm from the beam axis. No significant excess is observed above...Go to contribution page
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Mikhail Arov (Louisiana TU, Coll. Eng. & Science-Unknown-Unknown)28/07/2009, 14:35Top Quark PhysicsWe present recent results related to the measurement of top quark production using ppbar collisions recorded with the D0 Detector at the Tevatron. The results are: Measurement of the top production cross section (abstract 216), search for W' decaying to top and b (226), forward-backward asymmetries in top quark pair production (227), Search for tt' resonances (231) and search for charged Higgs...Go to contribution page
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Dr Tapas Sarangi (High Energy Physics-Department of Physics-University of Wisconsi)28/07/2009, 14:40Beyond the Standard ModelAn inclusive search for Supersymmetry based on lepton(s), multi-jets and missing transverse energy final state is studied in ATLAS. We discuss discovery potential for SUSY signal in the early LHC data with low integrated luminosity at 10 TeV CM energy.Go to contribution page
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Ryan Dickherber (Washington University in St. Louis)28/07/2009, 14:40Particle Astrophysics and CosmologyA leading candidate for astrophysical dark matter (DM) is a massive particle with a mass in the range from 50 GeV to greater than 10 TeV and an interaction cross section on the weak scale. The self-annihilation of such particles in astrophysical regions of high DM density can generate stable secondary particles including very high energy gamma rays with energies up to the DM particle mass....Go to contribution page
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Dr Mitchell Wayne (University of Notre Dame)28/07/2009, 14:40Education and Outreach in HEPQuarkNet is national program of Education and Outreach in Particle Physics and now in its 12th year. The program consists of 52 Centers distributed across 25 States and Puerto Rico. Annually participating are 450 high school teachers, 100 high school students, and 100 particle physicist mentors across a dozen experiments. An overview of project status and program activities will be presented.Go to contribution page
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Benedetto di Ruzza (CDF Collaboration)28/07/2009, 14:48An interesting decay mode of the Bs meson is into a phi pair: this is a vector-vector decay dominated by b->sss penguin transition which is a sensitive probe for possible new physics effects. The only existing sample of this mode was reconstructed by the CDF experiment from 0.2 fb-1 of data, and consisted of only 8 signal events. Here we present new results based on a clean sample of...Go to contribution page
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Zijin Guo (Johns Hopkins University-Unknown-Unknown)28/07/2009, 14:50First Results from LHCWe present the first results of the full CMS Silicon Tracker alignment based on several million reconstructed tracks from the cosmic data taken during the commissioning runs with the detector in its final position. Implication for CMS physics performance is discussed. The all-silicon design of the tracking system of the CMS experiment is expected to provide 1-2% resolution for 100...Go to contribution page
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Dr Scott Pratt (Michigan State University)28/07/2009, 14:50Heavy Ion Physics/Hot and Dense QCDI will review how two-particle correlations, or Hanbury-Brown Twiss (HBT) measurements, are providing detailed tests of the hydrodynamic evolution of heavy ion collisions at RHIC. The talk will focus on how hydrodynamics is implemented for this kind of physics and how the details of the implementation can affect final-state observables, especially HBT.Go to contribution page
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Christopher Paul Hays (University of Oxford)28/07/2009, 14:50Electroweak Physics [W/Z]I will review experimental issues related to W and Z boson production at hadron colliders, with particular emphasis on the measurement of the W boson mass. Recent measurements of W and Z production from the Tevatron will be discussed, as well as topics covered at the recent Milan workshop on the W mass measurement.Go to contribution page
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Dilip Jana (University of Oklahoma)28/07/2009, 14:55Top Quark PhysicsDue to the large top quark production cross section at the LHC energies, the ATLAS experiment is expected to have enough statistics to measure the top quark cross section even at initial luminosities. Recent studies performed in ATLAS on the development of top quark pair cross section measurements using the likelihood method will be discussed. An emphasis will be on measurements with data that...Go to contribution page
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Eric Braaten (Ohio State University)28/07/2009, 15:00Hadron SpectroscopyIn most recent analyses of D^0 D-bar^0 pi^0 decays of the X(3872), these events were assumed to come from D^{*0} D-bar^0 or D^0 D-bar^{*0} followed by the decay of the D^{*0} or D-bar^{*0}. Given this assumption, every D^0 D-bar^0 pi^0 event near the D^{*0} D-bar^0 threshold is assigned an invariant mass above the threshold. Such an analysis necessarily yields a mass for the X(3872) that is...Go to contribution page
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Prof. Greg Snow (University of Nebraska)28/07/2009, 15:00The scale and scope of the physics studied at the Auger Observatory offer significant opportunities for original outreach work. Education, outreach and public relations of the Auger collaboration are coordinated in a separate task whose goals are to encourage and support a wide range of education and outreach efforts that link schools and the public with the Auger scientists and the science of...Go to contribution page
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Mr Alexander Stuart (University of Wisconsin-Madison)28/07/2009, 15:00Neutrino PhysicsI investigate the possibility of using icosahedral symmetry as a family symmetry group in the lepton sector, focusing on the intriguing hypothesis that the solar neutrino mixing angle is governed by the golden ratio. I will present a basic toolbox for model-building using icosahedral symmetry, including explicit representation matrices and tensor product rules. As a simple application, I...Go to contribution page
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giovanni bonvicini (Wayne State University)28/07/2009, 15:00Accelerator PhysicsResults from extended operation of the CESR Large Angle Beamstrahlung Monitor are presented.Go to contribution page
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Daniel Phalen (University of Michigan - Ann Arbor)28/07/2009, 15:00Particle Astrophysics and CosmologyRecently there have been many anomalies in the cosmic ray data in the energy range 10 GeV to 1 TeV. In addition, there is the WMAP "Haze" excess in the 22 GHz to 93 GHz frequency range. We propose that pulsars could describe all of these excesses and discuss the relevant astrophysics.Go to contribution page
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Prof. Yury Kolomensky (University of California, Berkeley)28/07/2009, 15:00Higgs PhysicsWe search for a light CP-odd Higgs boson, A^0, in the radiative decay of Y(3S) --> gamma A^0, A^0 --> tau+ tau-, tau+ --> e+ nu_e nubar_tau or tau+ --> mu+ nu_mu nubar_tau. The data sample contains 122 million Y(3S) events collected with the BaBar detector. We find no evidence for a narrow structure in the studied mass region of 4.03 < m_{A^0} < 10.10 GeV/c^2 and set the...Go to contribution page
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Gheorghe Lungu (Rockefeller University)28/07/2009, 15:00Beyond the Standard ModelWe present a search for supersymmetry (SUSY) in the fully hadronic final state with the CMS detector at the LHC. This final state contains at least two jets and a significant transverse energy imbalance due to neutralinos escaping detection. The background to all-hadronic signature arise from QCD multijet production, ttbar and electroweak boson+jet production. These background can be...Go to contribution page
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Andrei Gaponenko (Lawrence Berkeley National Laboratory)28/07/2009, 15:10Top Quark PhysicsThe observation of the top quark will be an important milestone in ATLAS. This talk reviews methods that ATLAS plans to use to observe the top quark pair production process and measure its cross section.Go to contribution page
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Dr Jin Li (University of Hawaii)28/07/2009, 15:12Heavy Flavor Physics [bottom, charm, tau]We report recent results on $B_s$ decays, including measurements of $J/\psi \eta(')$ and several other modes. The results are based on large data sample collected at the $\Upsilon(5S)$ resonance with the Belle detector at the KEKB asymmetric $e^+e^-$ collider.Go to contribution page
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Grant Gorfine (Bergische Universitaet Wuppertal)28/07/2009, 15:15First Results from LHCAlignment of the ATLAS Inner Detector tracking system The Large Hadron Collider (LHC) at CERN is the world's largest particle accelerator. It will collide two proton beams at an unprecedented centre of mass energy of 14 TeV. ATLAS is equipped with a charged-particle tracking system built on two technologies: silicon and drift-tube based detectors, constituting the ATLAS Inner...Go to contribution page
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Helen Louise Caines (Yale University)28/07/2009, 15:15Heavy Ion Physics/Hot and Dense QCDBy studying p-p collisions we hope to improve our understanding of the fundamental constituents of matter and how they form into colorless objects. Measurements of the inclusive jet cross-sections and fragmentation properties have confirmed that QCD based calculations give a good description of the hard scattering processes. However, as our analysis of jets has improved it has...Go to contribution page
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Ping Tan (FNAL)28/07/2009, 15:20Electroweak Physics [W/Z]At LHC, the production cross sections of the W/Z bosons are at tens to hundreds nanobarns level. Studies of these processes can not only help the detector commissioning, but also help to establish standard candles for exploring beyond-the-SM physics, such as searches for Zprime, Wprime particles. The leptonic decays of W/Z bosons are expected to have very high trigger efficiency and...Go to contribution page
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Dr Sudhir Gupta (Iowa State University)28/07/2009, 15:20Beyond the Standard ModelIf neutrinos are Dirac type, in supersymmetry (SUSY), their masses can be explained by the introduction of an additional right chiral (neutrino) superfield which interacts with other superparticles through a tiny neutrino Yukawa coupling. We found that superpartner of such a right chiral neutrino (sneutrino) can be lightest among all the superparticles in a wide range of SUSY parameter space ...Go to contribution page
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Jorge S. Diaz (Indiana University)28/07/2009, 15:20Neutrino PhysicsLorentz symmetry is a key feature of our best description of nature. Among the different tests of this fundamental symmetry are ones with neutrino oscillations, which can provide a sensitive measurement of suppressed signals of new physics. The talk describes the neutrino sector of the Standard-Model Extension, which represents a general modification of the standard neutrino massive model...Go to contribution page
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Ms Tracy Slatyer (Harvard University)28/07/2009, 15:20Particle Astrophysics and CosmologyA new force in the dark sector, with GeV-scale force carriers, can change the expected properties of SUSY WIMP dark matter in significant ways. The annihilation cross section at low velocities is boosted by a Sommerfeld enhancement, perhaps by 2 or 3 orders of magnitude; the WIMP annihilates to the new force carrier, which immediately decays to light particles, bypassing constraints from...Go to contribution page
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Randal Ruchti (University of Notre Dame)28/07/2009, 15:20
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Ms Martina Hurwitz (University of Chicago)28/07/2009, 15:25WZ and ZZ Observation in lnujj and nunujj final statesGo to contribution page
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Prof. Daniel Kaplan (Illinois Institute of Technology)28/07/2009, 15:25Hadron SpectroscopyFermilab operates the world's most intense antiproton source. Newly proposed experiments can use those antiprotons either parasitically during Tevatron Collider running or after the Tevatron Collider finishes in about 2011. For example, the annihilation of 8 GeV antiprotons might make the world's most intense source of tagged D^0 mesons, and thus the best near-term opportunity to study charm...Go to contribution page
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Dr Michael Syphers (Fermi National Accelerator Laboratory)28/07/2009, 15:30Accelerator Physics
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Dr Ashish Kumar (SUNY/Buffalo)28/07/2009, 15:35
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Ashfaq Ahmad (Stony Brook University)28/07/2009, 15:40First Results from LHCFor particle and jet energies above a few GeV, calorimeters provide the most precise measurements. Thus, calibration of the calorimeters is crucial to achieve those physics goals that are dependent on the energy resolution and scale. For the ATLAS EM calorimeter, the strategy is to obtain a global constant term that is less than 0.7\%. Information from test beams and the hardware calibration...Go to contribution page
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Andriy Badin (Wayne State University)28/07/2009, 15:40Particle Astrophysics and CosmologyWe examine annihilation of light bosonic Dark Matter into pair of photons in model-independent way. We consider the simplest generic Lagrangian describing such process and then compare results to the available experimental data. We match effective generic lagrangian to results obtained within particular Dark matter models and determine possible constrains onto parameter space of those models.Go to contribution page
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Mr Lashkar Kashif (Harvard University)28/07/2009, 15:40Electroweak Physics [W/Z]One of the benchmark analyses to be performed with the first data at the CERN Large Hadron Collider will be the measurement of the Z boson transverse momentum spectrum. I will present a prospective analysis for this measurement in the dimuon channel on the ATLAS experiment. The analysis uses simulated datasets at a center-of-mass energy of 10 TeV. After summarizing the motivations for the...Go to contribution page
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Eunsin Lee (Texas A&M University)28/07/2009, 15:40Beyond the Standard ModelMany new physics models predict mechanisms that could produce a $\gamma$ and jets signature. We search in the $\gamma$ + jets and $\gamma$ + jets + $\met$ channels, independent of any model, for new physics using 2~fb$^{-1}$ of CDF Run II data collected at the Fermilab Tevatron from $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV. A variety of techniques are applied to estimate the standard...Go to contribution page
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Terence Tarnowsky (Michigan State University)28/07/2009, 15:40Heavy Ion Physics/Hot and Dense QCDThe measurement of particle correlations and fluctuations has been suggested as a method to search for the existence of a phase transition in relativistic heavy ion collisions. A change in the observed fluctuations is expected in global quantities such as baryon number, strangeness, or charge near a QCD critical point or a first order phase transition. Results for short and long-range...Go to contribution page
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Dr Marilisa De Serio (I.N.F.N. Bari)28/07/2009, 15:40Neutrino PhysicsThe OPERA experiment has been designed to prove the existence of nu_mu -> nu_tau oscillations in the atmospheric sector by the direct observation of nu_tau appearance in the CNGS nu_mu beam, produced at CERN. The detector, installed at Laboratori Nazionali del Gran Sasso (Italy), 730 km away from the neutrino source, consists of a modular target made of lead - nuclear emulsion bricks...Go to contribution page
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Dr Don Lincoln (Fermilab)28/07/2009, 16:00Education and Outreach in HEPWriting for a popular audience requires a very different approach than for our scientific colleagues. In this talk, an author of two popular HEP books, one popular magazine article and a recurring article in Fermilab Today shares some advice and experience.Go to contribution page
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Ms Kathryn Grim (Fermilab)28/07/2009, 16:20Education and Outreach in HEPKathryn Grim Media Training If you watched the Daily Showโs feature on the Large Hadron Collider in May, you will remember the look on John Ellisโ face when John Oliver asked him, "Evilgeniussayswhat?" It's impossible to anticipate everything a reporter will ask you, but this media training will teach you how to prepare for interviews with print, television or radio journalists and increase...Go to contribution page
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Dr Ilya Selyuzhenkov (Indiana University)28/07/2009, 16:30Heavy Ion Physics/Hot and Dense QCDOne of the most interesting and important phenomena predicted to occur in heavy ion collisions is the local strong parity violation. In non-central collisions, it is expected to result in charge separation of produced particles along the system's orbital momentum. I will report on results of the charge separation measurement in Au+Au and Cu+Cu collisions at sqrt{sNN} = 200 and 62...Go to contribution page
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Kevin Black (Harvard University)28/07/2009, 16:30Beyond the Standard ModelThe unprecedented energy of the Large Hadron Collider (LHC) will allow us to probe the TeV energy scale for the first time and elucidate the nature of electroweak symmetry breaking. New heavy particles may be produced leading to dramatic signatures in the LHC detectors. The increase in energy from previous experiments will allow us to probe a previously unreachable regime. I will review...Go to contribution page
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Mr Phillip Killewald (The Ohio State University)28/07/2009, 16:30First Results from LHCThe CMS detector is a general-purpose particle detector centered on one of the interaction points at the LHC. On the endcaps of the detector, interspersed between iron disks that serve as a return yoke for the detector's solenoidal magnetic field, are mounted 468 cathode strip chambers (CSCs). These chambers will serve as a trigger and spectrometer for muons generated in high-energy...Go to contribution page
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David Atwood (Iowa State University)28/07/2009, 16:30B factories which are run at the Upsilon 5s peak can produce Bs pairs in an entangled state. This system therefore provides methods to measure CP violation and mixing in the Bs meson that are not available if Bs mesons are produced in hadronic collisions. I will discuss efficient strategies for using entangled Bs pairs to learn about the mixing of the Bs meson.Go to contribution page
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Prof. Nikolaos Kidonakis (Kennesaw State University)28/07/2009, 16:30Top Quark PhysicsI present the latest results on the theoretical cross section for top-antitop pair production as well as for single top production at the Tevatron and the LHC. The calculations include higher-order soft-gluon corrections which are dominant near threshold. The top quark transverse momentum distribution is also presented.Go to contribution page
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Dr Pavel Snopok (UC Riverside)28/07/2009, 16:30Accelerator PhysicsIn the current Muon Collider design the muon beam 6D phase space volume must be reduced several orders in magnitude in order to be able to further accelerate it and inject it into the storage ring. Ionization cooling is currently the only feasible option for cooling the beam within the muon lifetime. The RFOFO ring is one of the feasible options currently under active investigation along with...Go to contribution page
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Dr Satyajit Behari (CDF)28/07/2009, 16:30Hadron SpectroscopyWeakly decaying bottom baryons can in principle be clearly reconstructed from their decays into J/psi or other charmed hadrons. However, their properties like lifetimes and branching fractions have long been quoted only as averages over all states, as the only directly observed b-baryon was the Lambda_b. Only in year 2007, the two Tevatron experiments observed the Xi_b, and recently the...Go to contribution page
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Tyce DeYoung (Pennsylvania State University)28/07/2009, 16:30Particle Astrophysics and CosmologyIceCube is a cubic kilometer neutrino telescope under construction at the South Pole, a successor to the first-generation AMANDA telescope. IceCube is now three quarters complete, with completion expected in early 2011, and data taken with the partially built detector already provides a sensitivity surpassing the complete AMANDA-II data set. Results from searches for astrophysical sources of...Go to contribution page
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Dr Michael Kirby (Northwestern University)28/07/2009, 16:30Higgs PhysicsWe present a search for the Standard Model Higgs boson produced via the WH to WWW(*) process at a center-of-mass energy of sqrt{s}=1.96 TeV with the D0 detector at the Fermilab Tevatron collider. We require two like-sign leptons (electrons or muons) with about 5 fb-1 of data. This channel provides significant sensitivity in the intermediate Higgs boson mass range. As well as inclusion of the...Go to contribution page
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Mr Tsutomu Fukuda (Nagoya university (JAPAN))28/07/2009, 16:30Neutrino PhysicsOPERA is an experiment that aims at detecting the appearance of tau-neutrinos in an almost pure muon-neutrinos beam through oscillation. The CC tau-neutrino interaction is identified through the detection of the tau lepton decay topology in the so-called Emulsion Cloud Chambers (ECC), passive lead sheets constituting the target mass interleaved with nuclear emulsion films providing the high...Go to contribution page
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Chang Liu (Purdue)28/07/2009, 16:30Electroweak Physics [W/Z]We present the strategy of the measurement of the differential cross-section of Drell-Yan dimuon production in early proton-proton collision data produced by the LHC accelerator at $\sqrt{s}=$~10~TeV and collected by the CMS detector. We study the Drell-Yan dimuon process for the whole mass range, starting around the $\Upsilon$ peaks, and going through the $Z$ peak to the kinematic...Go to contribution page
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Dr Cecilia Gerber (University of Illinois at Chicago)28/07/2009, 16:45Top Quark PhysicsWe report first observation of the electroweak production of single top quarks in ppbar collisions at sqrt(s) = 1.96 TeV based on 2.3 fb^-1 of data collected by the D0 detector at the Fermilab Tevatron Collider. Using events containing an isolated electron or muon and missing transverse energy, together with jets originating from the fragmentation of b quarks, we measure a cross section of...Go to contribution page
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Ashfaq Ahmad (Stony Brook University)28/07/2009, 16:50Electroweak Physics [W/Z]The study of W or Z boson with accompanying hadronic jets in final states is of high importance at hadron colliders both to understand Standard Model processes and to measure background to Beyond Standard Model physics searches. The presence of one or more jets in the final state increases the complexity for the reconstruction of leptons and of missing transverse energy. The ATLAS prospects...Go to contribution page
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PAUL NIENABER (SAINT MARY'S UNIVERSITY OF MINNESOTA)28/07/2009, 16:50Neutrino PhysicsSince its 2007 electron neutrino search result in 2007, the MiniBooNE collaboration has continued to press forward with additional neutrino and antineutrino running, an expanded investigation of the low energy excess seen in its first results, appearance and disappearance analyses in both neutrino and antineutrino data samples, and an array of unprecedented cross-section measurements. This...Go to contribution page
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Sung Woo Youn (Northwestern U./Fermilab)28/07/2009, 16:54We search for the semi-inclusive process Bs to Ds(*)Ds(*) using 2.8 fb-1 of ppbar collisions at sqrt{s}=1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We observe 26.6 pm 8.4 signal events with a significance above background of 3.2 standard deviations yielding a branching ratio of 0.035 pm 0.010 (stat) pm 0.011(syst). Under certain theoretical...Go to contribution page
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Dr Jim Pivarski (Texas A&M University)28/07/2009, 16:55First Results from LHCAs its name suggests, the Compact Muon Solenoid (CMS) features a full tracking spectrometer for identifying and measuring the momenta of muons. Every muon passes through 18-44 layers, providing a highly redundant track capable of validating and improving the momentum measurement from the inner tracker. But like any tracking system, its performance depends on precise knowledge of the positions...Go to contribution page
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Michael Issah (Vanderbilt University)28/07/2009, 16:55Heavy Ion Physics/Hot and Dense QCDAn important goal of the experiments at the Relativistic Heavy Ion Collider (RHIC) is to produce and study the hot and dense matter produced in heavy-ion collisions. To this effect, several probes are used to infer the properties of the matter formed. Two such probes are jets produced in hard scattering processes and anisotropic flow from pressure gradients which develop in the expanding...Go to contribution page
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Boris Kayser (Fermilab)28/07/2009, 16:55Particle Astrophysics and CosmologyWe briefly explain how the present baryon-antibaryon asymmetry of the universe could have arisen through leptogenesis, and then discuss a new version of leptogenesis in which CP violation in electromagnetic decays plays the central role.Go to contribution page
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Dr Jennifer Pursley (University of Wisconsin)28/07/2009, 16:55Higgs PhysicsWe present a search for standard model (SM) Higgs to WW production in dilepton plus missing transverse energy final states using approximately 5.0 fb-1 of integrated luminosity. In order to maximize sensitivity, the multivariate discriminants used to separate signal from background in the opposite-sign dilepton event sample have been independently optimized for final states with either zero,...Go to contribution page
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Prof. Peter McIntyre (Texas A&M University)28/07/2009, 17:00Accelerator PhysicsRecent developments in accelerator physics and super-conducting magnet technology make it reasonable to extend proton-antiproton colliding beams from the 2 TeV of the Tevatron to 100 TeV in the existing SSC tunnel, with luminosity ~10^35 /cm2s. At 100 TeV boson-boson fusion becomes a significant initial state for production of new massive particles. Petavac would extend the mass reach beyond...Go to contribution page
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Richard Hill (University of Chicago)28/07/2009, 17:10Neutrino PhysicsThe production of single photons in low energy (~1 GeV) neutrino scattering off nucleons is analyzed in the Standard Model. At very low energies, E(nu) << 1 GeV, a simple description of the chiral lagrangian involving baryons and arbitrary SU(2)_L x U(1)_Y gauge fields is developed. Extrapolation of the process into the ~1-2 GeV region is treated in a simple phenomenological model. Coherent...Go to contribution page
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Yunhe Xie (Brown University)28/07/2009, 17:10Beyond the Standard ModelWe report on a new search for charged massive stable particles (CMSPs) at the D0 Experiment at the Fermilab Tevatron collider. These electrically charged particles have sufficiently long lifetimes to penetrate through the entire D0 detector before decaying. CMSPs are predicted in many theories beyond the Standard Model. We use time-of-flight information to search for pair-produced...Go to contribution page
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28/07/2009, 17:10Top Quark PhysicsFor the Tevatron and future LHC searches of new physics at the TeV scale, the mass determination of particles pair produced with final states characterized by the presence of missing transverse momenta is of great importance. Within the various methods for mass determination, mT2 is one of the best observables. This variable has been extensively studied relying until now on Monte Carlo...Go to contribution page
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Nagesh Kulkarni (Wayne State University)28/07/2009, 17:18The CDFII detector at the Fermilab Tevatron has now collected more than 5 fb-1 of data, and using an impact parameter trigger has has collected the largest existing samples of D*+ -> D0pi+ , where D0 decays as D0-> h+h- (with h = K or pi). We present updated measurements of decay rates in these channels, which allow precise measurements of CP violation and flavor mixing in the charm sector.Go to contribution page
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Dr Edward Diehl (University of Michigan)28/07/2009, 17:20First Results from LHCThe ATLAS muon spectrometer consists of several major components: Monitored Drift Tubes (MDTs) for precision measurements in the bending plane of the muons, supplemented by Cathode Strip Chambers (CSC) in the high $\eta$ region; Resistive Plate Chambers (RPCs) and Thin Gap Chambers (TGCs) for trigger and second coordinate measurement in the barrel and endcap regions, respectively; an optical...Go to contribution page
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Mr Timothy Cohen (University of Michigan)28/07/2009, 17:20Particle Astrophysics and CosmologyWe show that the baryon asymmetry of the universe can be realized via the out-of-equilibrium decays of TeV scale exotic vector-like squarks. Since baryon number and CP violation will occur in the superpotential, this mechanism is relatively insensitive to the structure of supersymmetry breaking. Examination of the cosmology will lead to restrictions on the reheat temperature of the universe...Go to contribution page
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Dr Nils Krumnack (Baylor University)28/07/2009, 17:20Higgs PhysicsA combination of several searches for standard model Higgs boson production at CDF using data samples up to 5fb-1 of integrated luminosity is performed. We calculate combined upper limits on the ratio of the Higgs boson cross section times branching ratio to its standard model prediction for Higgs boson masses between 100 GeV/c^2 and 200 GeV/c^2.Go to contribution page
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Dr Monika Sharma for the STAR Collaboration (Wayne State University)28/07/2009, 17:20Heavy Ion Physics/Hot and Dense QCDThe event anisotropy measurements at RHIC suggest the matter created in heavy-ion collision flows with very little viscosity. Precise determination of "shear viscosity-to-entropy density" ratio is currently a subject of extensive study[1]. We present measurements of differential transverse momentum correlation functions from the STAR experiment in Au+Au collisions at $\sqrt{s_{NN}}$ = 200...Go to contribution page
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Dr Sonny Mantry (University of Wisconsin at Madison)28/07/2009, 17:25Top Quark PhysicsA new factorization theorem for the precision extraction of the top mass from top pair production far above threshold at the ILC is presented. The factorization theorem gives a precise relation between the measurement of properties of top jet distributions, such as thrust or hemisphere invariant mass, and the top mass. The observable is shown to be sensitive to a new class of top mass schemes...Go to contribution page
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Dr James Jenkins (Los Alamos National Laboratory)28/07/2009, 17:30Neutrino PhysicsLow energy photon production is an important background to many current and future precision neutrino experiments. I present a phenomenological study of t-channel radiative corrections to neutral current neutrino nucleus scattering. After introducing the relevant processes and phenomenological coupling constants, I will explore the derived energy and angular distributions as well as total...Go to contribution page
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Manfred Wendt (Fermi Naional Accelerator Laboratory)28/07/2009, 17:30Accelerator PhysicsRecent and upcoming particle accelerators for HEP, as well as for applied science demand a very high beam quality, e.g. high beam power in the multi MW range, focused beams at the IP to a size of a few nm, fsec range bunch length, low beam halo and tails, high beam stability, etc. To characterize, verify and improve these beam parameters, advances in beam instrumentation and diagnostics are...Go to contribution page
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Ioannis Katsanos (University of Nebraska - Lincoln)28/07/2009, 17:30Beyond the Standard ModelThe high-mass spectrum of lepton and photon pairs is sensitive to a broad array of new physics. Examples are searches for extra dimensions in different models in the dielectron, dimuon, and diphoton channels, photon + missing transverse energy and Z' bosons with Standard-Model-like couplings to fermions as well as in a variety of GUT-inspired models. In addition, the data sample can be...Go to contribution page
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Dr Bennie Ward (Baylor University)28/07/2009, 17:40Particle Astrophysics and CosmologyWe show that, by using amplitude-based resummation techniques for Feynman's formulation of Einstein's theory, we get quantum field theoretic predictions for the UV fixed-point values of the dimensionless gravitational and cosmological constants. Connections to the phenomenological asymptotic safety analysis of Planck scale cosmology by Bonanno and Reuter are discussed.Go to contribution page
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Daniel Boline28/07/2009, 17:40Top Quark PhysicsWe present recent results related to the measurement of the top quark mass using ppbar collisions recorded with the D0 Detector at the Tevatron. The results are: A direct measurement of the mass difference between top and antitop quarks (abstract 41), Measurement of the top quark mass in the leptons+jets channel (abstract 215) and in the di-lepton channel (abstract 218).Go to contribution page
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Prof. Michael Sokoloff (University of Cincinnati)28/07/2009, 17:42We present evidence of $D^0$-$\bar{D^0}$ mixing using a time-dependent amplitude analysis of the decay $D^0\rightarrow K^+ \pi^- \pi^0$ in a data sample of 384 fb$^{-1}$ collected with the $B\!a\!B\!a\!r$ detector at the PEP-II $e^+e^-$ collider at SLAC. Assuming $C\!P$ conservation, we measure the mixing parameters $x'_{K\pi\pi^0} = $[$2.61 \mbox{}^{\rm +0.57}_{\rm -0.68}$\,(stat.)$\pm...Go to contribution page
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Chang Liu (Purdue University)28/07/2009, 17:45First Results from LHCDespite of the delay of physics collisions at the Large Hadron Collider (LHC), induced by the incidence in September 2008, the CMS collaboration is utilizing the commissioned detector to take large amounts of cosmic data. About 300 million cosmic events were recorded with the full detector and a magnetic field of 3.8~T turned on. The effort has provided significant statistics to...Go to contribution page
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Josh Vredevoogd (MSU)28/07/2009, 17:45
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Dr Ian-Woo Kim (University of Wisconsin-Madison)28/07/2009, 17:50Beyond the Standard ModelConsidering two missing energy particles with odd parity can be decayed from a heavy particle with even parity by two-step cascade, we observe kinematic cusp structures in invariant mass distributions of resonant particle decay into missing particles. Knowing a parent mass from direct resonant decay into standard model particles, we determine the mass of the intermediate particle and the...Go to contribution page
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Prof. Christopher White (Illinois Institite of Technology)28/07/2009, 17:50Neutrino PhysicsThe Daya Bay Reactor Anti-Neutrino Experiment is a neutrino oscillation experiment designed to observe and measure the neutrino mixing angle ฮธ13. The sensitivity goal is 0.01 in sin^2(2ฮธ13) at the 90% confidence level, a significant improvement over the current limit. This will be accomplished by measuring the relative rates and energy spectra of reactor electron antineutrinos with multiple...Go to contribution page
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Dr Camille Ginsburg (Fermi National Accelerator Laboratory)28/07/2009, 18:00Accelerator PhysicsAbstract to appear hereGo to contribution page
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Costas Vellidis28/07/2009, 18:05Top Quark PhysicsWe report the results of the measurements of the top quark mass in the lepton+jet, dilepton, and all-jets channels using top pair events corresponding to an integrated luminosity of more than 4 fb-1 from proton- antiproton collisions at the Tevatron recorded by the CDF II detector. We present different results using different techniques in the lepton + jets, dilepton, all-jets channels and...Go to contribution page
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Dr Adam LINCOLN (Wayne State University)28/07/2009, 18:06Heavy Flavor Physics [bottom, charm, tau]The decays of D0 and D0bar mesons produced from e+ e- annihilation at the psi(3770) resonance reflect quantum correlations, so that decay rates are sensitive to interference between indistinguishable final states. ย Using the CLEO-c detector at the Cornell Electron Storage Ring, we measure the time-independent decay rates of D0 decays to K- pi+, K+ pi-, several CP eigenstates, and...Go to contribution page
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Aram Avetisyan (Brown)28/07/2009, 18:10Beyond the Standard ModelPresented is a study of searches for two exotic particles - a heavy top quark partner with a fractional charge of 5/3, T(5/3), and its partner, the heavy B quark with charge -1/3. These particles decay to a top quark and a W boson, leading to very busy events with multi-leptons and multi-jets. Processes where same-sign dileptons are produced are considered. The backgrounds are predominantly...Go to contribution page
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Dr Debabrata Mohapatra (Virginia Polytechnic Institute & State University)28/07/2009, 18:10Neutrino PhysicsSearch for $\theta_{13}$, the last unknown mixing angle is extreamly important in understanding the lepton ๏ฌavor mixing matrix, and investigation of the CP violation in the lepton sector. The reactor neutrino experiments can provide a clean laboratory for the $\theta_{13}$ measurement via electron antineutrino disappearance. The Daya Bay experiment proposes to measure...Go to contribution page
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Ryan Patterson (Caltech)29/07/2009, 08:45
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Lee Roberts (Boston University)29/07/2009, 09:00
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Tom Browder (University of Hawaii)29/07/2009, 09:30
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David Hitlin (Caltech)29/07/2009, 10:00
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Benjamin Grinstein (UC San Diego)29/07/2009, 11:00
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Aida El-Khadra (University of Illinois (Urbana))29/07/2009, 11:30
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Mousumi Datta (FNAL)29/07/2009, 12:00
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John Campbell (University of Glasgow)30/07/2009, 09:00
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Don Lincoln (FNAL)30/07/2009, 09:30
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Stephen Godfrey (Carleton University)30/07/2009, 10:00
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James Dunlop (BNL)30/07/2009, 11:00
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Larry McLerran (BNL)30/07/2009, 11:30
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Randal Ruchti (University of Notre Dame)30/07/2009, 12:00
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Valerie Halyo (Princeton University)30/07/2009, 14:00Beyond the Standard ModelDileptons are among the cleanest probes of new physics waiting to be discovered at the LHC. In this review, I discuss an assortment of signatures involving dileptons and the exciting new physics they may help uncover. High invariant mass dileptons with opposite sign may reveal a new resonance, a possible remnant of some unified gauge theory. On the other hand, same-sign dileptons alongside...Go to contribution page
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Dr Zdenek Dolezal (Institute of Particle and Nuclear Physics)30/07/2009, 14:00Detector Technology and R&DThe ATLAS experiment at the CERN Large Hadron Collider (LHC) has started taking data last autumn with the inauguration of the LHC. The SemiConductor Tracker (SCT) is the key precision tracking device in ATLAS, made up from silicon micro-strip detectors. The completed SCT has been installed inside the ATLAS experimental hall. Since then the detector was operated for many months under realistic...Go to contribution page
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Carol Johnstone (Fermi National Accelerator Laboratory)30/07/2009, 14:00Accelerator PhysicsA new concept in non-scaling FFAGs has been invented in which the machine tune is stable over an extended acceleration cycle, a factor of a 3-6, or more, in momentum. Fermilab Research Association (FRA) has elected to patent this concept and a strong collaborative design effort to optimize, simulate, and demonstrate the technical feasibility of this accelerator approach is underway to be...Go to contribution page
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Brian Cole (Physics Dept., Pupin Physics Lab.-Columbia University-Unknown)30/07/2009, 14:00Heavy Ion Physics/Hot and Dense QCDThe Relativistic Heavy Ion Collider at Brookhaven National Laboratory was designed to explore the confinement to de-confinement transition in QCD at high temperatures and low baryon densities. Results from the RHIC program have provided overwhelming circumstantial evidence for the formation of quark gluon plasma in nuclear collisions at RHIC. Estimates obtained from several different RHIC...Go to contribution page
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Mike Strang (Ohio State University)30/07/2009, 14:00Electroweak Physics [W/Z]We present high statistics measurements of diboson production in ppbar collisions at the D0 experiment in multiple channels, including WW -> lvlv, WW/Z-> lvjj and WZ->lvll. These measurements both test physics beyond the standard model and demonstrate the sensitivity of hadron colliders to rare signals such as Higgs boson production.Go to contribution page
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Prof. Kara Hoffman (UMD)30/07/2009, 14:00Neutrino PhysicsThe search for astrophysical neutrinos has given rise to a new generation of neutrino telescopes of an unprecedented scale, including IceCube, ANTARES and ANITA. While these instruments are, ๏ฌrst and foremost, astronomical observatories, they also occupy a unique niche in the field of particle physics. These detectors may offer a glimpse of high energy neutrinos that reach us over...Go to contribution page
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Mr Kirill Melnikov (Johns Hopkins University)30/07/2009, 14:00Perturbative and Non-perturbative QCDI will describe recent developments in perturbative QCD focusing on progress in understanding one-loop corrections to multi-jet processes.Go to contribution page
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Dr Adam Ritz (U of Victoria)30/07/2009, 14:00Low Energy Searches for BSM PhysicsAbstract: I will discuss some of the motivations for considering new physics in a hidden sector, which interacts with the Standard Model via light GeV-scale mediators. For example, this sector may naturally contain a dark matter candidate. The focus will be on experimental probes of the light mediators, primarily through the vector portal - where a secluded U(1) sector kinetically...Go to contribution page
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Prof. Alexey Petrov (Wayne State University)30/07/2009, 14:00Heavy Flavor Physics [bottom, charm, tau]
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Dr Hovanes Egiyan (CLAS Collaboration)30/07/2009, 14:00Hadron SpectroscopyFollowing the first observations of the possible $S=+1$ pentaquark state $\Theta^{+}(1540)$, there have been many experiments in various laboratories to verify these results and to search for states which could be associated with other members of the pentaquark antidecuplet. The NA49 collaboration reported the observation of narrow $S=-2$ states with masses about $1860$~GeV showing in the...Go to contribution page
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Dr Elizabeth Worcester (University of Chicago)30/07/2009, 14:00CP-violationWe will present the final measurement of the direct CP violation parameter, Re(ฯตโฒ/ฯต), from the KTeV experiment at Fermilab. We will also describe precision measurements of the KL -KS mass difference, ฮm, the KS lifetime, ฯS , and the CPT tests, ฯ+โ and ฮฯ. These results are based on the full dataset collected by the KTeV experiment at Fermi National Accelerator Laboratory during 1996,...Go to contribution page
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Dr Gabe Shaughnessy (Northwestern University / Argonne National Laboratory)30/07/2009, 14:00Higgs PhysicsThe Higgs boson is the missing piece of the SM. While the Tevatron and LHC search for the nature of the Higgs, dark matter detection experiments aim to uncover the dark sector. I will review various models that connect these two exciting sectors and discuss their associated signatures.Go to contribution page
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Jadranka Sekaric (Florida State University)30/07/2009, 14:20Electroweak Physics [W/Z]We present the first observation of the Zgamma to nunugamma process at the Tevatron at 5.1 standard deviations significance, based on 3.6 fb-1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron ppbar Collider at sqrt{s} = 1.96 TeV. The measured Zgamma cross section multiplied by the branching fraction of Z to nunu is 32 +- 9 (stat.+syst.) +- 2 (lumi.) fb for the...Go to contribution page
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Ian Shipsey (Purdue University)30/07/2009, 14:24Heavy Flavor Physics [bottom, charm, tau]Using the entire CLEO-c psi(3770) --> DDbar event sample, corresponding to an integrated luminosity of 818 pb-1 and approximately 5.2 million DDbar events, we present a study of the decays D0 --> pi- e+ nu, D0 --> K- e+ nu, D+ --> pi0 e+ nu, and D+ --> K0bar e+ nu. Using a tagged analysis technique, in which one D is fully reconstructed in a hadronic mode, absolute partial rates for...Go to contribution page
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Mr Anton Kapliy (University of Chicago)30/07/2009, 14:25Detector Technology and R&DAs the LHC luminosity is ramped up to the design level of 10^34 cmโ2 sโ1 and beyond, the high rates, multiplicities, and energies of particles seen by the detectors will pose a unique challenge. Only a tiny fraction of the produced collisions can be stored on tape and immense real-time data reduction is needed. An effective trigger system must maintain high trigger efficiencies for the...Go to contribution page
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Taekoon Lee (Kunsan National University)30/07/2009, 14:25Hadron SpectroscopyIt is shown that the absence of the long-time potential model prediction of spin-orbit inversion in heavy-light mesons can be explained by the chiral radiative corrections in potential model. Some consequences of the radiative corrections on the spectrum of P-wave bottom mesons are discussed.Go to contribution page
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Philip Adamson (Fermilab)30/07/2009, 14:30Accelerator PhysicsWe report on the current status and future plans of Fermilab's Main Injector.Go to contribution page
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Jiasen Ma (The University of Chicago)30/07/2009, 14:30Low Energy Searches for BSM PhysicsThe E391a experiment at the KEK 12 GeV proton synchrotron is the first dedicated experiment for the Kl->pi0nunubar decay. The data is taken during three separate Runs. We just performed a blind analysis on the last Run. With (3.48+-0.25)*10^9 Klong decays, we found no candidate events. An upper limit of 6.8*10^-8 was set on the branching ratio for the decay at the 90% confidence level.Go to contribution page
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Dr Steven Blusk (Syracuse University)30/07/2009, 14:30CP-violationLHCb is an experiment which has been designed to make precise measurements of CP violating quantities in B-hadron decays. The scope and experimental challenges of this programme are outlined. Our knowledge of the unitarity triangle will be improved significantly with respect to the present status. In particular, the precision on the angle gamma is expected to improve dramatically. Comparison...Go to contribution page
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Dr Anupama Atre (Fermilab)30/07/2009, 14:30Neutrino PhysicsThe Majorana nature of neutrinos can be experimentally verified only via lepton-number violating processes involving charged leptons. The unambiguous signal of Majorana neutrinos can be probed in many low energy experiments such as study of beta decay spectra, accelerator based experiments such as decays of taus and mesons and collider experiments with direct production and decay. These decays...Go to contribution page
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Dr Haijun Yang (University of Michigan)30/07/2009, 14:35We report results of a study of the SM Higgs discovery potential through the W-pair leptonic decay modes at the LHC with ATLAS detector. We used MC samples with full detector simulation and reconstruction of the ATLAS experiment to estimate the ATLAS detection sensitivity for the reaction of pp->H->WW->ll nu nu. We first conducted a cut-based analysis, and then performed multivariate...Go to contribution page
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Dr Alexander Glazov (DESY)30/07/2009, 14:35Perturbative and Non-perturbative QCDRecent results from the H1 and ZEUS experiment at HERA will be presented.Go to contribution page
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James Linnemann (Michigan State University)30/07/2009, 14:40Beyond the Standard ModelWe present the results of a broad search for indications of new physics at the electroweak scale. We examine an exposure of 1 fb-1 to pbar p interactions at the Fermilab Tevatron at sqrt(s)=1.96 TeV collected by the D0 detector. We concentrate on final states involving leptons, but the searches are done in a model independent way. We analyze the data for deviations from the...Go to contribution page
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Martina Hurwitz (University of Chicago)30/07/2009, 14:40Electroweak Physics [W/Z]We present a search for WW plus WZ production in the lepton plus missing transverse energy plus two jets channel at CDF. A matrix element technique is employed to separate the signal from the large W plus jets background. The WW plus WZ production cross section is measured and compared against the standard model NLO prediction.Go to contribution page
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Rajan Gupta (Los Alamos National Lab)30/07/2009, 14:45Heavy Ion Physics/Hot and Dense QCDThis talk will summarize the results obtained by the HotQCD collaboration on the equation of state and the crossover transition in 2+1 flavor QCD. We will present results on bulk thermodynamic quantities - energy density, pressure, entropy density, and the speed of sound over the temperature range 140 < T < 540 MeV. These results have been obtained on lattices of temporal size $N_\tau = 6$...Go to contribution page
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Mr Soohyung Lee (Korea University)30/07/2009, 14:48Heavy Flavor Physics [bottom, charm, tau]We study the decay properties of the D_s^+ using a large data sample collected by the Belle detector at the KEKB asymmetric energy $e^+ e^-$ collider. Measurements of the relative branching fractions of K_S pi and K_S K states and the observation of the doubly Cabibbo-suppressed decay Ds+ -> K+K+pi- are presented.Go to contribution page
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Igor Gorelov (Department of Physics and Astronomy, Univ. of New Mexico, USA)30/07/2009, 14:50Detector Technology and R&DWe will describe the principles of radiation damage monitoring using the current measurements of the pixel sensors to be provided by the circuits of ATLAS Pixel Detector HVPP4 System. The dependence of the leakage current with respect to an integrated luminosity at several temperature scenarios will be presented. Based on the analysis we have evaluated the sensitivity...Go to contribution page
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Liaoyan Dong (SLAC)30/07/2009, 14:50Hadron SpectroscopyWe present a Dalitz-plot analysis of charmless B+/- decays to the final state pi+-pi+-pi-+ using a sample of (465+-5)x10^-6 BBbar pairs collected by the BABAR experiment at \sqrt{s} = 10.58 GeV. We measure the branching fractions and direct CP asymmetries of B+/- to rho0pi+/-, f2(1270)pi+/- and non-resonant pi+pi-pi+/-.Go to contribution page
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Emily Thompson (University of Massachusetts)30/07/2009, 15:00Beyond the Standard ModelThe Standard Model has been successful in describing many fundamental aspects of particle physics. However, there are some remaining puzzles which are not explained within the context of its present framework. We discuss the possibility to discover new physics in the ATLAS Detector via a four-fermion contact interaction, much in the same way Fermi first described Weak interactions. Using a...Go to contribution page
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Jennifer Pursley (Wisconsin)30/07/2009, 15:00Electroweak Physics [W/Z]We present the first observation in hadronic collisions of the electroweak production of vector boson pairs (VV, V=W,Z) where one boson decays to a dijet final state. The data correspond to 3.5 fb^-1 of integrated luminosity of p-pbar collisions at sqrt(s)=1.96 TeV collected by the CDF II detector at the Fermilab Tevatron. Event selection requires two jets and large transverse momentum...Go to contribution page
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Dr Alexey Drozdetskiy (University of Florida)30/07/2009, 15:00Higgs PhysicsWe present an evaluation of the CMS expected 95\% C.L. exclusion limits in early Higgs boson searches. The results are based on a statistical combinations of multiple recent Monte-Carlo analyses: $H\to WW^*\to 2l 2\nu$ and $H\to ZZ^*\to 4l$ decay channels, where $l$ stands for $e$ or $\mu$. We show that these two channels alone should allow for excluding the Standard Model Higgs boson in the...Go to contribution page
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Samina Masood (Univ. of Houston Clear Lake)30/07/2009, 15:00Neutrino PhysicsA massive neutrino can couple with the external magnetic field through its mass. A massive neutrino has a very tiny magnetic moment and is extremely insignificant for astrophysics and cosmology. However, the finite temperature and density effects of the background increase the magnetic moment of neutrino to a desired value. We compare the background effect on the magnetic moment of neutrino...Go to contribution page
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Prof. Kay Kinoshita (University of Cincinnati)30/07/2009, 15:00CP-violationThe Belle detector at the KEKB electron-positron collider has collected nearly 1~ab$^{-1}$ of data in its decade of operation. The KEKB group has proposed Super-KEKB, an upgrade of KEKB to increase the luminosity by two orders of magnitude during a three-year shutdown, with an ultimate goal of 8 x 10^35/cm^2/s luminosity. To exploit the improved luminosity, an upgrade of the Belle detector...Go to contribution page
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Dr Ronald Moore (Fermi National Accelerator Laboratory)30/07/2009, 15:00Accelerator PhysicsThe Tevatron proton-antiproton collider at Fermilab continues operation as the world's highest energy particle accelerator by delivering luminosity at a center-of-mass energy of 1.96 TeV. We review recent performance and plans for the remainder of Run 2.Go to contribution page
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Dr Monica Tecchio (University of Michigan)30/07/2009, 15:00Low Energy Searches for BSM PhysicsThe goal of the K0TO experiment at J-Parc is to discover and measure the rate of the rare decay of the neutral KL into pi0 nu nubar . This flavor changing neutral current decay proceeds through second-order weak interactions. Other, as yet undiscovered particles, which can mediate the decay could provide an enhancement to the branching ratio, which in the Standard Model predicted...Go to contribution page
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Prof. Nikolaos Kidonakis (Kennesaw State University)30/07/2009, 15:10Perturbative and Non-perturbative QCDI present results for two-loop soft anomalous dimensions, which are derived from dimensionally regularized diagrams with eikonal quark lines and control soft-gluon emission in hard-scattering processes. Detailed results for the UV poles of the eikonal integrals will be shown for massive quarks, and the massless limit will also be taken. The construction of soft anomalous dimensions at...Go to contribution page
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David Cinabro (Wayne State University)30/07/2009, 15:12Heavy Flavor Physics [bottom, charm, tau]We report recent results on hadronic decays ofย D0, D+, and Ds mesons. Results include branching fractions for D0, D+, and Ds decays to two pseudoscalars; the first measurements ofย absolute branching fractions for Ds decay; exclusive Ds --> omega X decays; inclusive hadronic Ds decays; and Dalitz analyses of Ds --> K+ K- pi+ and D+ --> K+ K- pi+ decays.Go to contribution page
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Prof. Sergei Voloshin (Department of Physics and Astronomy-College of Science-Wayne Sta)30/07/2009, 15:15Heavy Ion Physics/Hot and Dense QCDRecent developments in the field of anisotropic flow, measurements and interpretations, are reviewed with an emphasis on relation to the bulk properties of the medium.Go to contribution page
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Warren James Clarida (Physics and Astronomy Department - University of Iowa)30/07/2009, 15:15Detector Technology and R&DThe Compact Muon Solenoid (CMS) detector is in the planning phase of a major upgrade in preparation for the upgrade of the Large Hadron Collider (LHC) to the Super-LHC (SLHC). The SLHC will feature a significant increase in the instantaneous luminosity, leading to up to 200 collisions per interaction. In addition, the sustained radiation from the initial phase of LHC operations will...Go to contribution page
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Ia Iashvili (SUNY at Buffalo)30/07/2009, 15:20Electroweak Physics [W/Z]We present the latest results on the production of WW, WZ, W gamma, Z gamma and ZZ events at the Fermilab Tevatron Collider. The results are based on the analyses of a few fb^-1 of data collected in p pbar collisions at center of mass energy of 1.96TeV by CDF and DO experiments during the Tevatron RunII. Analyses of the diboson production processes provide crucial test of the Standard...Go to contribution page
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Ms Isabel Pedraza (High Energy Physics-Department of Physics-University of Wisconsi)30/07/2009, 15:20Beyond the Standard ModelThe discovery potential for a heavy new resonance decaying into di-lepton pairs, or into a high pT lepton and missing ET, using the ATLAS detector at the LHC is presented. Due to the simplicity and robustness of the the di-lepton (or lepton+ETmiss) final states, they are ideal channels in which to search for new physics. The unprecedented center-of-mass energy available at the LHC allows...Go to contribution page
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Mark Pitt (Virginia Tech)30/07/2009, 15:20Neutrino PhysicsMark Pitt, Virginia Tech, on behalf of the LENS Collaboration The Low-Energy Neutrino Spectroscopy (LENS) experiment is designed to precisely measure in real time the spectral flux of the low energy solar neutrinos (pp, $^7$Be, pep, and CNO, comprising > 99% of the solar neutrino flux) via charged-current capture on indium-115 (with a threshold of 114 keV). LENS will allow a comparison...Go to contribution page
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Prof. John Conway (University of California, Davis)30/07/2009, 15:25Higgs PhysicsWe present searches for non-standard model Higgs boson production using the latest amount of data collected by the CDF detector at the Fermilab Tevatron. Supersymmetric extensions of the standard model can yield enhanced production of a neutral MSSM Higgs boson, A, according to the parameter tan(Beta). We search for an A decaying to tau leptons, and set exclusion regions in the tan(Beta)...Go to contribution page
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Dr Vladimir Nagaslaev (Fermi National Accelerator Laboratory)30/07/2009, 15:30Accelerator Physics
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Dr Simone Stracka (Babar Collaboration)30/07/2009, 15:30CP-violationMeasurements of alpha in BabarGo to contribution page
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Dr Giulio Saracino (Univ. Degli Studi di Napoli Federico II)30/07/2009, 15:30Low Energy Searches for BSM PhysicsThe NA62 experiment is designed to measure the BR of the very rare kaon decay K+->pi+nu nubar collecting order 100 events with 10% of background in two years of data taking. The poor current experimental knowledge of this decay, based on 7 events collected by the E787/949 experiments, from one side, and the good theoretical prediction on the other side, make this new measurement very...Go to contribution page
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Dr Bennie Ward (Baylor University)30/07/2009, 15:35Perturbative and Non-perturbative QCDIn the context of HERWIG6.5, we present Monte Carlo data showing the comparison between the parton shower generated by the standard DGLAP-CS kernels and that generated by the new IR-improved DGLAP-CS kernels recently developed by one of us(BFLW). This is done by implementing the new kernels in HERWIG6.5 to generate a new MC, HERWIRI1.0, for hadron-hadron interactions at high energies. Possible...Go to contribution page
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Atsuko Kibayashi (Okayama University)30/07/2009, 15:40Neutrino PhysicsModification of large water Cherenkov detectors by addition of gadolinium has been proposed. The large cross section for neutron capture on Gd will greatly improve the sensitivity to antielectron neutrinos from supernovae and reactors. A five-year project to build and develop a prototype detector based on Super-Kamiokande (SK) has been approved. We are performing various studies, including a...Go to contribution page
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Selda Esen (Department of Physics-Brown University-Unknown)30/07/2009, 15:40Beyond the Standard ModelWe present a search for extra dimensions in the diphoton channel using the CMS detector at the Large Hadron Collider. The search is focused on the forthcoming 2009--2010 run at 10 TeV center-of-mass energy and $\sim 100~\pbinv$ of data. We discuss event selection and optimization, as well as data-driven methods of estimating various backgrounds and efficiencies. The dominant source of...Go to contribution page
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Denes Molnar (Purdue University and RIKEN BNL Research Center)30/07/2009, 15:45Heavy Ion Physics/Hot and Dense QCDThe past couple years have seen a lot of progress in the application of causal dissipative hydrodynamics to model heavy-ion collisions at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. These advances benefited greatly from breakthrough results obtained in the gravity (AdS/CFT) dual of theories based on N=4 supersymmetric Yang-Mills. 2+1D viscous...Go to contribution page
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Prof. K.K. Gan (The Ohio State University)30/07/2009, 16:15Detector Technology and R&DWe have designed several ASICs for the optical link upgrades of the new silicon trackers of the ATLAS experiment at the planned upgrades of the LHC, CERN. The ASICs include a high-speed driver for VCSELs, a receiver/decoder for the signal received at the PIN diode, and a clock multiplier to produce a higher frequency clock to serialize the data for transmission. These chips were designed using...Go to contribution page
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Yaquan Fang (University of Wisconsin)30/07/2009, 16:20Perturbative and Non-perturbative QCDThe large production rate of jets and photons at the LHC will provide an ideal opportunity for testing perturbative QCD, for constraining the gluon parton density function, as well as for searching for new physics. The finely segmented calorimeters, together with an efficient tracking system, allows for precision measurements of photons and jets. In this presentation, the di-jet,...Go to contribution page
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Dr Paolo Gandini (Babar Collaboration)30/07/2009, 16:30CP-violation
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Dr Vaia Papadimitriou (Fermilab)30/07/2009, 16:30Hadron SpectroscopyExperimental Review of the Hadron Spectroscopy SessionGo to contribution page
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30/07/2009, 16:30
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Leo Bellantoni (Fermilab)30/07/2009, 16:30Low Energy Searches for BSM PhysicsThis presentation will report on the first experimental search for KL -> pi0 pi0 ฮผ+ฮผโ based on data collected by the KTeV Experiment at the Fermi National Accelerator Laboratory in Batavia, Illinois. Although this decay mode is possible within the Standard Model the rate is suppressed by the very limited phase space. The HyperCP Experiment has recently observed three Sigma+ -> p+ฮผ+ฮผโ events...Go to contribution page
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Warren James Clarida (Physics and Astronomy Department - University of Iowa)30/07/2009, 16:30Beyond the Standard ModelThe Standard Model can be extended to include massive neutrinos as observed in the recent oscillation experiments. Perhaps the most commonly studied model is the type-I seesaw mechanism. This model introduces a new neutrino with a Majorana nature with an unknown mass. In this study we present the potential for the discovery of a Majorana neutrino during the first year of data collection from...Go to contribution page
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Prof. Flera Ritzadinova (Oklahoma State University)30/07/2009, 16:35Higgs PhysicsWe report on a search for charged Higgs bosons in the mass range 80 < m_H+ < 155 GeV in decays of top quark pairs in ppbar collisions at sqrt{s}=1.96 TeV. It has been performed using ~1 fb-1 of data collected with the D0 detector at the Fermilab Tevatron collider. The search is based on the analysis of ttbar production rates in the final states with two isolated leptons (electrons or...Go to contribution page
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Waruna Fernando (The Ohio State University)30/07/2009, 16:40Detector Technology and R&DWe investigate the feasibility of using VCSEL and PIN for the optical links at the silicon trackers of the ATLAS experiment at the planned upgrades of the LHC, CERN. We irradiated VCSEL and PIN with 24 GeV/c protons at CERN up to the equivalent SLHC fluence of 2.6 x 10^15 p/cm2, including a 50% safety factor. The GaAs VCSEL arrays were fabricated by Optowell and Advanced Optical Component...Go to contribution page
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Dmitry Bandurin (Kansas State University)30/07/2009, 16:45Perturbative and Non-perturbative QCDA sample of photon plus 3-jet events collected in the D0 experiment with an integrated luminosity of 1fb-1 is used to determine the fraction of the events with double parton (DP) scattering fDP in a single ppbar collision at sqrt(s)=1.96TeV. The events are selected with photon candidate transverse momentum between 60 and 80GeV, leading jet pT above 25GeV and two additional jets with...Go to contribution page
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Kevin Dusling (Brookhaven National Laboratory)30/07/2009, 16:45Heavy Ion Physics/Hot and Dense QCDThis work investigates the consequence of the non-equilibrium phase space distribution on elliptic flow and particle spectra using a viscous hydrodynamic simulation. First, we show how various models of energy loss lead to different viscous corrections to spectra and make a connection between the shear viscosity coefficient and the transport parameter q-hat. The off-equilibrium distribution...Go to contribution page
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Stephen Godfrey (Carleton University)30/07/2009, 16:50Beyond the Standard Models-channel resonances are predicted by many models of Physics Beyond the Standard Model and it is quite possible that such an object will be discovered in the early years of the LHC program. If this occurs, the task will be to understand its origins. I will describe various diagnostic measurements to study Z' 's including some new observables we have proposed that can distinguish between...Go to contribution page
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Dr Richard Kass (Ohio State University)30/07/2009, 16:50CP-violationWe report a search for the decays B- --> D0 K- and B- --> D*0 K- and their charge conjugates where the flavor of the neutral D0 meson is ambiguous. The final state particles for the D0 K- and D*0 K- modes are [K+ pi-] K- and ([K+ pi-] pi0) K- or ([K+ pi-] gamma) K- respectively. These decays are sensitive to the CKM angle gamma due to interference between the b --> c and b --> u...Go to contribution page
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Yury Kolomensky (UC Berkeley/LBNL)30/07/2009, 16:55Low Energy Searches for BSM PhysicsThe nature of dark matter is a challenge to both astrophysics and collider physics. Dark matter may have both heavy and light constituents, much like the normal matter described by the Standard Model. We present a search for decay of the Y(1S) meson into undetectable final states, using a sample of 98 million Y(3S) mesons collected at the PEP-II/BaBar B-factory. We tag the decay of the...Go to contribution page
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Dr Trevor Vickey (High Energy Physics-Department of Physics-University of Wisconsi)30/07/2009, 17:00Higgs PhysicsThe discovery of a neutral Higgs boson with large branching fractions into tau or muon pair final states would be strong evidence of new physics beyond the Standard Model, as would the discovery of a charged Higgs boson. The discovery potential for neutral and charged Higgs bosons in the Minimal Supersymmetric Extension of the Standard Model (MSSM) with the ATLAS detector at the LHC is...Go to contribution page
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Dr Mitchell Soderberg (Yale University)30/07/2009, 17:05Detector Technology and R&DLiquid Argon Time Pro jection Chamber (LAr TPC) detectors are ideally suited for studying neutrino interactions and probing the pa- rameters that characterize neutrino oscillations. The ability to drift ionization particles over long distances in puri๏ฌed argon and to trigger on abundant scintillation light allows for excellent particle identi๏ฌca- tion and triggering capability. In...Go to contribution page
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Eric Swanson (University of Pittsburg)30/07/2009, 17:05Hadron SpectroscopyTheory review of the Hadron Spectroscopy sessionGo to contribution page
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Dr Don Lincoln (Fermilab)30/07/2009, 17:10Perturbative and Non-perturbative QCDWe present the first measurement of dijet angular distributions in Run II of the Fermilab Tevatron Collider. The measurement is based on a dataset, corresponding to an integrated luminosity of approx 0.7 fb-1 taken with the D0 detector. Shapes of dijet angular distributions have been measured over a range of dijet masses, from 0.25 TeV and beyond 1TeV. The data are in good agreement...Go to contribution page
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Marc-Olivier Bettler (Laboratoire de Physique des Hautes Energies (LPHE-IPEP))30/07/2009, 17:10Beyond the Standard ModelThe LHCb experiment will in the first run of LHC obtain more B-meson decays than has been recorded by any other experiment previously. This provides a unique opportunity for studying very rare decays where the effects of physics beyond the Standard Model might be dominating. The decay Bs -> mu+ mu- is very sensitive to an extended Higgs sector and might be the first place to see the effects of...Go to contribution page
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Dr Simone Stracka (Babar Collaboration)30/07/2009, 17:10CP-violationTwo- and Three-body charmless B decays at BaBarGo to contribution page
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Huichao Song (The Ohio State Univ)30/07/2009, 17:15Heavy Ion Physics/Hot and Dense QCDThe viscosity of the QGP is a presently hotly debated subject. Since its computation from first principles is difficult, it is desirable to try to extract it from experimental data. Viscous hydrodynamics provides a tool that can attack this problem and which may work in regions where ideal hydrodynamics begins to fail.\\ Through the efforts of different groups, the elliptic flow has...Go to contribution page
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Elisa Guido (University & INFN Genova)30/07/2009, 17:20Low Energy Searches for BSM PhysicsUsing a sample of 122 million Upsilon(3S) decays collected with the BaBar detector at the PEP-II asymmetric energy collider at the Stanford Linear Accelerator Center, we measure the ratio R = BR(Upsilon(1S) --> tautau)/BR(Upsilon(1S) --> mumu); the measurement is intended as a test of the lepton universality and as a possible search for a light pseudoscalar Higgs boson in...Go to contribution page
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Dr German Carrillo-Montoya (University of Wisconsin, Madison)30/07/2009, 17:25Higgs PhysicsThe search for the Higgs boson is a crucial element of the physics program of the LHC. This talk will give an overview of the Standard Model Higgs boson searches under study within ATLAS, with an emphasis on background normalization strategies. Special attention will be given to the search for Higgs bosons in the H->WW decay mode, since this channel is of particular interest for the...Go to contribution page
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Kurtis Nishimura (University of Hawaii)30/07/2009, 17:30CP-violationThe loops involved in $b \to s$ penguin transitions provide sensitivity for precision tests of the Standard Model and searches for new physics. We present measurements of inclusive and exclusive radiative and electroweak B decays from the Belle detector, located at the KEKB asymmetric $e^+e^-$ collider, which has collected the world's largest sample of data at the $\Upsilon(4S)$ resonance.Go to contribution page
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Dmitriy Beznosko (NN Group SUNYSB)30/07/2009, 17:30Detector Technology and R&DT2K is Tokai to Kamioka long baseline neutrino oscillation experiment (Japan). The goal of the experiment is to measure theta13 neutrino oscillation parameter by nu-e appearance from nu-mu beam. The near off-axis detector, ND280, consists of several sub-detectors in 0.2T magnetic field, with photon readout scheme. This necessitates usage of the efficient, high performance photon detector that...Go to contribution page
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Dr Erin De Pree (St. Mary's College of Maryland)30/07/2009, 17:30Beyond the Standard ModelSince the discovery of neutrino mass, the possibility of a fourth generation of particles has reemerged. Electroweak precision measurements force the fourth generation to have non-degenerate masses which is consistent with the three standard generations. We present the possibilities of detecting fourth generation top quark in several theories beyond the Standard Model, including warped extra...Go to contribution page
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Sabine Lammers (Indiana University)30/07/2009, 17:35Perturbative and Non-perturbative QCDWe present measurements of differential cross sections in inclusive Z/gamma plus jet production in a data sample of 1fb-1 collected with the D0 detector in proton antiproton collisions at sqrt(s)=1.96TeV. Measured variables include the Z/gamma transverse momentum (pT-Z), and rapidity (y-Z), the leading jet pT (pT-jet), and rapidity (y-jet), as well as various angles of the Z+jet...Go to contribution page
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Bonnie Fleming (Yale University)31/07/2009, 09:00
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Ernst Ma (UC Riverside)31/07/2009, 09:30
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Chris Herzog (Princeton University)31/07/2009, 10:00
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Mirjam Cvetic (University of Pennsylvania)31/07/2009, 11:00
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James Brau (University of Oregon)31/07/2009, 11:30
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Pier Oddone (FNAL)31/07/2009, 12:00
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Dr kwangwoo park (southern methodist university)31/07/2009, 14:00Electroweak Physics [W/Z]The $W$ boson mass extracted by the NuTeV collaboration from the ratios of neutral and charged-current neutrino and anti-neutrino cross sections differs from direct measurements performed at LEP2 and the Fermilab Tevatron by about $3 \sigma$. Several possible sources for the observed difference have been discussed in the literature, including new physics beyond the Standard Model (SM)....Go to contribution page
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Mr Chanaka De Silva (Wayne State University)31/07/2009, 14:00Heavy Ion Physics/Hot and Dense QCDTwo particle correlation measurements at RHIC have shown an extended near side delta eta correlation in heavy-ion collisions relative to p+p for both momentum triggered and untriggered analyses. This phenomenon is also known as the "ridge". An investigation into the momentum dependence of two particle correlations is presented for Cu+Cu 200 GeV collisions from the STAR experiment. We extract...Go to contribution page
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Bing An Li (University of Kentucky)31/07/2009, 14:00Perturbative and Non-perturbative QCD\documentclass[12pt]{article} \usepackage{graphicx} \def\today{} \textwidth 18.3cm \textheight 23.2cm \setlength{\oddsidemargin}{-1.0cm} \setlength{\evensidemargin}{-1.0cm} \topmargin -1.50cm \begin{document} \title{New limit of Pion Form Factor at very Large $Q^2$ } \author{Bing An Li,$\;$Department of Physics, Univ. of Kentucky, Lexington,USA} \maketitle In this talk a new...Go to contribution page
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Dr Jason Detwiler (Lawrence Berkeley National Laboratory)31/07/2009, 14:00Neutrino PhysicsI will review the current status and outlook of prominent non-oscillation neutrino physics experiments, including neutrinoless double-beta decay searches and kinematic measurements of neutrino mass.Go to contribution page
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Prof. Markus Luty (UC Davis), Markus Luty (University of California Davis)31/07/2009, 14:00Beyond the Standard ModelThe large hadron collider will begin physics operation late this year, and will provide a decisive test of more than 30 years of building models for physics beyond the standard model. This talk will critically review the case for physics beyond the standard model arising from present-day data, and ways of distinguishing them at the LHC. Emphasis will be placed on strong electroweak...Go to contribution page
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Swagato Banerjee (University of Victoria)31/07/2009, 14:00Low Energy Searches for BSM PhysicsWe present a search for the non-conservation of lepton flavor in the decay tau -> mu/e gamma performed with 967 M tau decays from e+e- annihilations collected by the BABAR detector at the PEP-II storage ring at a center-of-mass energy corresponding to Y(2S), Y(3S) and Y(4S) resonances.Go to contribution page
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Prof. Klaus Honscheid (Ohio State University)31/07/2009, 14:00Detector Technology and R&DThe discovery that the universe is accelerating, not slowing down from the mass it contains, is the surprise that sets the initial research program of 21st Century cosmology. The Dark Energy Survey (DES) is a next generation sky survey aimed directly at understanding this mystery. DES is designed to measure the dark energy equation of state parameter with four complementary techniques: galaxy...Go to contribution page
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Dr Alexandr Yelnikov (City College of New York)31/07/2009, 14:00Field and String TheoryWe carry out further analysis of the Hamiltonian approach to Yang-Mills theory in 2+1 dimensions which helps to place the calculation of the vacuum wave function and the string tension in the context of a systematic expansion scheme. The solution of the Schrodinger equation is carried out recursively. The computation of correlators is re-expressed in terms of a two-dimensional chiral boson...Go to contribution page
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Dr Andreas Scharf (University at Buffalo)31/07/2009, 14:20Electroweak Physics [W/Z]Simultaneously with the turning-on of the Large Hadron Collider (LHC) the data taking for jet production rates will start. The study of these production rates is one of the important tests of the Standard Model in the new energy regime available at the LHC. In order to discriminate possible extensions of the Standard Model accurate theoretical predictions are needed. In this talk I will...Go to contribution page
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Kory Stiffler (University of Iowa)31/07/2009, 14:20Field and String TheoryThe gauge/gravity correspondence has provided an avenue where modern superstring theory can come full circle back to nuclear physics. For an SU(N) gauge theory, certain low energy configurations of mesons with k quarks and k anti-quarks, have been studies in both the Hamiltonian formulation of Yang-Mills and lattice gauge theories. Utilizing the gauge/gravity correspondence of string...Go to contribution page
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Swagato Banerjee (University of Victoria)31/07/2009, 14:20Low Energy Searches for BSM PhysicsCharged lepton-flavor violating (CLFV) processes are extremely rare in the Standard Model, but they may occur in various beyond-the-Standard Model (BSM) theories, including SUSY or models with leptoquarks or compositeness. We present a search CLFV decays Upsilon --> e+ tau- and Upsilon --> mu+ tau- which probes BSM contributions at the TeV mass scales.Go to contribution page
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Zijin Guo (Johns Hopkins University)31/07/2009, 14:25Detector Technology and R&DThe BaBar Silicon Vertex Tracker (SVT) is a five-layer double-sided silicon detector designed to provide precise measurements of the position and direction of primary tracks, and to fully reconstruct low-momentum tracks produced in e+e- collisions at the PEP-II asymmetric collider at SLAC. This presentation will describe the design, implementation, performance, and validation of the local...Go to contribution page
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Mr George Moschelli (Wayne State University)31/07/2009, 14:25Heavy Ion Physics/Hot and Dense QCDJet correlation measurements at RHIC show a striking increase in the yield of associated particles in a narrow range in relative azimuthal angle near $\phi\approx 0$. This region of enhanced particle production is called a ridge because it extends over a broad range in relative pseudorapidity. Interestingly, a similar `soft' ridge of enhanced production has been reported for two-particle...Go to contribution page
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doug toussaint (University of Arizona)31/07/2009, 14:25Perturbative and Non-perturbative QCDWe use lattice gauge theory including the effects of light and strange dynamical quarks to calculate the "strange quark content of the nucleon", <N| s s_bar |N>, which is important for interpreting the results of some dark matter detection experiments. The method is to evaluate quark-line disconnected correlations on the MILC lattice ensembles, which include the effects of dynamical...Go to contribution page
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Nicole Ackerman (SLAC)31/07/2009, 14:30Neutrino PhysicsEXO-200 is the first phase of the Enriched Xenon Observatory (EXO) experiment, which searches for neutrinoless double beta decay in Xe-136 to measure the mass and probe the Majorana nature of the neutrino. EXO-200 consists of 200 kg of liquid Xe enriched to 80% in Xe-136 in an ultra-low background TPC. Energy resolution is enhanced through the simultaneous collection of scintillation light...Go to contribution page
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Edwin Barnes (University of Virginia)31/07/2009, 14:40Field and String TheoryWe extend the analysis of Alday and Maldacena for obtaining gluon scattering amplitudes at strong coupling to include massive quark scattering. Our quarks are actually the N=2 hypermultiplets which arise when D7-brane probes are included in the AdS_5 x S^5 geometry. We first derive appropriate massive-particle boundary conditions for the string scattering worldsheets. We then find an exact...Go to contribution page
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Trang Hoang (Florida State University)31/07/2009, 14:40Electroweak Physics [W/Z]We present a measurement of the forward-backward charge asymmetry (AFB) for di-electron produced via an intermediate Z/gamma*$ boson using about 3.6 fb-1 of data. These data were collected by the D0 detector in ppbar collisions at sqrt{s}=1.96 TeV. We also present a measurement of the effective weak mixing angle using the measured AFB distribution.Go to contribution page
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Sergey Uzunyan (Northern llinois University)31/07/2009, 14:40Beyond the Standard ModelWe report on searches for the production of scalar and vector leptoquarks in ppbar collisions at the Tevatron collider, which are based on integrated luminosities of up to 2.5 fb-1 collected with the DO detector. Leptoquarks, which are predicted by several extensions of the Standard Model, are hypothetical particles carrying both lepton and quark flavors. At hadron colliders they can...Go to contribution page
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Dr Jennifer Kile (Brookhaven National Lab)31/07/2009, 14:45Low Energy Searches for BSM PhysicsWe study, in a model-independent analysis, the possibility of direct detection of light fermionic dark matter in neutrino experiments. ย We consider all operators of dimension six or lower which can contribute to the process f p -> n e+, where f is a dark fermion, and place constraints on their coefficients via the dark matter lifetime. ย We then discuss limits on these interactions from...Go to contribution page
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Kurtis Nishimura (University of Hawaii)31/07/2009, 14:50Detector Technology and R&DSuper B factories that will perform precision tests of the flavor sector of the Standard Model and searches for new physics will demand excellent charged particle identification (PID), particularly K/ฯ separation, for momenta up to 4 GeV/c, as well as the ability to operate under beam backgrounds significantly higher than current B factory experiments. We describe an Imaging...Go to contribution page
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Dr Jiangyong Jia (Brookhaven National Laboratory (BNL) and Stony Brook University)31/07/2009, 14:50Heavy Ion Physics/Hot and Dense QCDMeasurements from RHIC at intermediate $p_T$ of 2-6 GeV/c revealed many features in various single particle and two particle correlation observables. These measurements not only suggest the leading roles of collective flow and jets in this $p_T$ region, but also establish a strong and sophisticated coupling between the two. Experimental results are discussed in the hope to elucidate the...Go to contribution page
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Prof. Mike Sokoloff (University of Cincinnati)31/07/2009, 14:50Perturbative and Non-perturbative QCDTwo-photon processes produced at e+e- colliders via the reaction e+ e- --> e+ e- gamma gamma(*) --> e+ e- X, provide important experimental data for the study of hadronic spectra and testing QCD predictions. We report here on recent results in a number of these channels that are obtained at the PEP-II collider with the BABAR detector. The gamma gamma --> pi0pi0, pi0eta, and etaeta cross...Go to contribution page
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Larissa Ejzak (University of Wisconsin-Madison)31/07/2009, 14:50Neutrino PhysicsUnderstanding the nature of neutrino masses will require physics beyond the long-standing Standard Model of particle physics. Neutrinoless double beta decay (0ฮฝฮฒฮฒ) experiments like the Cryogenic Underground Observatory for Rare Events (CUORE) are uniquely suited for probing the remaining mysteries of neutrino mass, particularly the question of the neutrinoโs Majorana nature. CUORE will be a...Go to contribution page
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Mr Vikas Bansal (Department of Physics and Astronomy-University of Pittsburgh-Unk)31/07/2009, 15:00Beyond the Standard ModelDilepton-jet final states are used to study physical phenomena not predicted by the standard model. ATLAS discovery potential to leptoquarks and Majorana neutrinos is presented with fully-simulated ATLAS detector at the Large Hadron Collider (LHC) at CERN. The study is motivated by the role of the leptoquark in the Grand Unification of fundamental forces and the see-saw mechanism that...Go to contribution page
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Mr James Alsup (University of Tennessee)31/07/2009, 15:00Field and String TheoryWe discuss the derivation of dissipative Bjorken hydrodynamics from a Schwarzschild black hole in asymptotically AdS spacetime of arbitrary dimension in the limit of large longitudinal proper time $\tau$. Using an appropriate slicing near the boundary, we calculate the Schwarzschild metric to next-to-next-to-leading order in the large $\tau$ expansion as well as the dual stress-energy tensor...Go to contribution page
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Michael Marino (University of Washington)31/07/2009, 15:10Neutrino PhysicsThe observation of neutrinoless double-beta decay would establish that the neutrino is a Majorana particle, would help determine the absolute mass scale of the neutrino, and could provide insight into understanding lepton-number-violating processes. The Majorana Collaboration plans to search for this process in 76Ge using high-purity germanium detectors in an ultra-low-background...Go to contribution page
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Prof. Kay Kinoshita (University of Cincinnati)31/07/2009, 15:15Detector Technology and R&DThe Belle detector at the KEKB electron-positron collider has collected nearly 1~ab$^{-1}$ of data in its decade of operation. The KEKB group has proposed Super-KEKB, an upgrade of KEKB to increase the luminosity by two orders of magnitude during a three-year shutdown, with an ultimate goal of 8 x 10^35/cm^2/s luminosity. To exploit the improved luminosity, an upgrade of the Belle detector...Go to contribution page
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Taekoon Lee (Kunsan National University)31/07/2009, 15:15Perturbative and Non-perturbative QCDWe show that the Borel resummed perturbative contribution of the stochastic perturbation theory and dimension-4 gluon condenstate can acccount for the average plaquette data, and the resulting gluon condensate of the $\text{SU}(3)$ pure Yang-Mills theory is determined to be $\langle \frac{\alpha_s}{\pi} GG \rangle\approx0.13\,\, {\rm GeV}^4$. A critical review of the existing procedure...Go to contribution page
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Kate Scholberg (Duke University)31/07/2009, 15:15Low Energy Searches for BSM PhysicsThe Spallation Neutron Source in Oak Ridge, Tennessee, is designed to produce intense pulsed neutrons for various science and engineering applications. Copious neutrinos are a free by-product. When it reaches full power in 2009, the SNS will be the world's brightest source of neutrinos in the few tens of MeV range. The proposed CLEAR (Coherent Low Energy A (Nuclear) Recoils) experiment...Go to contribution page
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Dmitri Smirnov (Notre Dame)31/07/2009, 15:20Beyond the Standard ModelWe report on searches for a compositeness signature of quarks and leptons in the di-fermion (di-leptons and di-jets) channels using data collected by the D0 detector at the Fermilab Tevatron. We set model-dependent lower limits at the 95% condence level on the compositeness scale of for constructive and destructive interference between the Drell-Yan (DY) amplitude and the contact...Go to contribution page
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Prof. L.C.R. Wijewardhana (University of Cincinnati)31/07/2009, 15:20Field and String TheoryBlack branes are studied in Einstein-Gauss-Bonnet (EGB) gravity. Evaporation drives black branes towards one of two singularities depending on the sign of $\alpha$, the Gauss-Bonnet coupling. For positive $\alpha$ and sufficiently large ratio $\sqrt{\alpha}/L$, where $L/2\pi$ is the radius of compactification, black branes avoid the Gregory-Laflamme (GL) instability before reaching a critical...Go to contribution page
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Dr Ivan Vitev (LANL)31/07/2009, 15:25Heavy Ion Physics/Hot and Dense QCDFor jets, with great power comes great opportunity. The unprecedented center of mass energies available at the LHC open new windows on the QGP: we demonstrate that jet shape and jet cross section measurements become feasible as a new, differential and accurate test of the underlying QCD theory. We present a first step in understanding these shapes and cross sections in heavy ion reactions. Our...Go to contribution page
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31/07/2009, 15:30
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Aram Apyan (Illinois Institute of Technology)31/07/2009, 15:40Detector Technology and R&DField emission is one of the major problems limiting rf cavity performance in accelerators. Superconducting cavities are made of thin metal shells in a metal liquid helium vessel. This system can be viewed as a Cerenkov radiator between a set of mirrors. Field emitted electrons can punch through the cavity wall and generate Cerenkov light in helium which can be collected by appropriate...Go to contribution page
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Dr J. Brian Pitts (University of Notre Dame)31/07/2009, 15:40Field and String TheoryThe problem of finding a covariant expression for the distribution and conservation of gravitational energy-momentum dates to the 1910s. A suitably covariant infinite-component localization is displayed, reflecting Bergmann's realization that there are infinitely many gravitational energy-momenta. Initially use is made of a flat background metric (or rather, all of them) or connection,...Go to contribution page
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Mr Gagik Yeghiyan (Wayne State University)31/07/2009, 15:40Beyond the Standard ModelWe re-examine constraints from the evidence for observation of the lifetime difference in $D^0$-${\overline D}^0$ mixing on the parameters of supersymmetric models with $R$-parity violation (RPV). We find that RPV SUSY can give large negative contribution to the lifetime difference. We also discuss the importance of the choice of weak or mass basis when placing the constraints on...Go to contribution page
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Daekyoung Kang (The Ohio State University)31/07/2009, 15:40Perturbative and Non-perturbative QCDThe leading-order parton processes that produce a dilepton with large transverse momentum predict that the transverse polarization should increase with the transverse momentum for almost any choice of the quantization axis for the spin of the virtual photon. The rate of approach to complete transverse polarization depends on the choice of spin quantization axis. We propose axes that optimize...Go to contribution page
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Dr Christopher Kolda (U of Notre Dame)31/07/2009, 16:10Low Energy Searches for BSM PhysicsIn many models of physics beyond the Standard Model, it is necessary to suppress new, large sources of flavor-changing neutral currents. One recipe is to demand that the new physics exhibits โminimal flavor violation.โ Though this is really a constraint on the quark sector of the theory, it can have strong effects on possible sources of lepton number violation. In particular, it strongly...Go to contribution page
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Prof. Joe Kiskis (UC Davis)31/07/2009, 16:30Perturbative and Non-perturbative QCDContinuum reduction and Monte Carlo simulation are used to calculate the heavy quark potential and the string tension in large N Yang-Mills theory in three and four dimensions in the confined phase. In addition, the spatial string tension in the 2+1 high T phase is also measured. With reduction, the potential can be calculated out to separations larger than the lattice extent.Go to contribution page
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Prof. Tulika Bose (Boston University)31/07/2009, 16:30Beyond the Standard ModelA review of the discovery potential of the LHC for exotic phenomena involving complex final states is presented. Topics covered include searches for high mass di-boson resonances, fourth generation quarks, technicolor, black-holes etc. Challenges presented by unconventional final states involving long-lived particles predicted by hidden valley and other models are also discussed. The...Go to contribution page
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Dr Sevil Salur (LBL)31/07/2009, 16:30Heavy Ion Physics/Hot and Dense QCDFull jet reconstruction has traditionally been thought to be difficult in heavy ion events, due to large multiplicity backgrounds. The search for new physics in high luminosity p+p collisions at the LHC similarly requires the precise measurement of jets over large backgrounds due to pile up, and has motivated the development a new generation of jet reconstruction algorithms which are also...Go to contribution page
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Prof. Tonnis ter Veldhuis (Macalester College)31/07/2009, 16:30Field and String TheorySoliton solutions in scalar field theory in an AdS1+1 background are investigated. Analytic soliton solutions are obtained in specific models, and their mass is calculated. The fluctuation spectrum is determined, and the quantum correction to the soliton mass is computed.Go to contribution page
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Andrew Norman (Univeristy of Virginia)31/07/2009, 16:40Low Energy Searches for BSM PhysicsThe Mu2e collaboration is proposing to search for coherent, neutrino-less conversion of muons into electrons in the field of a nucleus with a sensitivity improvement of approximately 10,000 over existing limits. Such a lepton flavor-violating reaction probes new physics at a scale unavailable by direct searches at either present or planned high energy colliders. The physics motivation for Mu2e...Go to contribution page
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Christian Sturm (Brookhaven National Laboratory)31/07/2009, 16:55Perturbative and Non-perturbative QCDQuark masses are fundamental parameters of QCD. Their accurate determination is thus a mandatory task. Light quark masses can be determined non-perturbatively through lattice simulations in a given renormalization scheme, e.g. a momentum subtraction scheme. The MSbar scheme is not directly amenable in lattice simulations since it is closely related to dimensional regularization. To obtain...Go to contribution page
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Yue Shi Lai (Columbia University-Unknown-Unknown)31/07/2009, 17:00Heavy Ion Physics/Hot and Dense QCDThe Relativistic Heavy Ion Collider uses the collision of heavy nuclei to create a strongly interacting, partonic medium, while the collision of $p + p$ provides a baseline measurement to determine the medium modification effect. Direct jet reconstruction applied to these collision systems offers a crucial constraint on the mechanism for in-medium parton energy loss and jet-medium...Go to contribution page
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Prof. G. Bruce Mainland (The Ohio State University at Newark)31/07/2009, 17:10Beyond the Standard ModelTo begin exploring the possibility that leptons, quarks, or both, might be highly relativistic bound states, a numerical method for solving two-body, bound-state Bethe-Salpeter equations is discussed. This class of integral equations is difficult to solve, not because the equations are usually non-separable, but rather because it is typically impossible to discretize the equations in such...Go to contribution page
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Jing Shao (U of Michigan)31/07/2009, 17:10Low Energy Searches for BSM PhysicsWe demonstrate that in effective theories arising from ${\cal N}=1$ fluxless compactifications of M-theory on a $G_2$ manifold with low energy supersymmetry, CP-violating phases do not appear in the soft-breaking Lagrangian except via the Yukawas. Such a mechanism may be present in other string compactifications as well; we describe properties sufficient for this to occur. CP violation is...Go to contribution page
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Dr Anthony Timmins (Wayne State University)31/07/2009, 17:30Heavy Ion Physics/Hot and Dense QCDWe present high p_{T} pion, proton, kaon, and rho spectra measured with the STAR experiment in p+p and Au+Au collisions at 200 GeV. We find the kaon/pion ratio to be enhanced in Au+Au 200 GeV collisions relative to p+p 200 GeV collisions at p_T 6 GeV/c. The enhancement persists until p_{T} ~ 11 GeV/c for central Au+Au 200 GeV collisions. We also show R_{AA} measured at the ...Go to contribution page
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Prof. Ernesto Matute (Universidad de Santiago de Chile)31/07/2009, 17:30Beyond the Standard ModelWe go beyond the Standard Model guided by presymmetry, the discrete electroweak quark-lepton symmetry hidden by topological effects which explain quark fractional charges as in condense matter physics. Partners of the particles of the Standard Model and the discrete symmetry associated with this partnership appear as manifestations of a residual presymmetry and its extension from matter to...Go to contribution page
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Prof. Rainer Fries (Texas A&M University & RBRC)31/07/2009, 18:00Heavy Ion Physics/Hot and Dense QCDI will discuss some basic ideas about changes in the chemical composition of QCD jets traversing nuclear matter. I will focus in particular on "conversions" of jets in quark gluon plasma and their effect on spectra and azimuthal asymmetries of high-PT hadrons and photons. I discuss possible signatures at RHIC and the LHC heavy ion program and review recent experimental results.Go to contribution page
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john brandenburg (Orbital Technologies Corporation)Beyond the Standard ModelThe GEM(Gravity E&M) theory (Brandenburg 2007) is an alloy of the Sahkarov and Kaluza-Klein theories of EM and gravitation and allows the derivation of the Newton Gravitation Constant from first principles, and the two postulates of the GEM theory: 1. that gravity and EM forces, and electrons and protons are unified at the Planck length rP and split apart with the apprearance of a hidden...Go to contribution page
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The CDF Collaboration (Various)Heavy Flavor Physics [bottom, charm, tau]At first order all b-hadrons have equal lifetimes given by the lifetime of b-quark. The effects of spectator quark in the hadron then introduces corrections which yields to differences in the b-hadron lifetimes. The corrections can be predicted rather precisely and therefore precise measurements can test our understanding of spectator effects. We report measurements of lifetimes of B+,...Go to contribution page
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Dr Wayne Lundberg (Architect of Comprehensive Theory)Beyond the Standard ModelCausal particle theory requires that a particleโs time coordinate be uninvolved with its representative non-commutative matrix algebra. A non-commutative representation algebra has been constructed which both underlies the standard model algebraic group and preserves particle causality. It was proposed that such an algebra be considered โlong before the causality criterion was known. As in...Go to contribution page
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Aurelio Juste (Fermilab), Horst Wahl (Florida State University), Stefan Soldner-Rembold (University of Manchester)Electroweak Physics [W/Z]We present the direct measurement of trilinear gauge boson couplings in the WW+WZ ->lvjj final state using proton-anti-proton collisions at sqrt{s}=1.96 TeV. Analysed data correspond to 1.07 fb-1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron. The 95 % C.L. limits are set using two different relation between the anomalous Z and gamma exchange terms...Go to contribution page
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Boaz Klima (Fermi National Accelerator Lab. (Fermilab)-Unknown-Unknown)Electroweak Physics [W/Z]We discuss prospects for studying diboson production at the LHC with the CMS detectorGo to contribution page
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Owen Long (University of California Riverside)Hadron SpectroscopyWe perform a study of the exclusive production of Dbar D, Dbar D*, and D*bar D* in initial-state-radiation events, from e+ e- annihilations at a center-of-mass energy near 10.58 GeV, to search for charmonium and possible new resonances. The data sample corresponds to an integrated luminosity of 384 fb^-1 and was recorded by the BaBar experiment at the PEP-II storage rings. The Dbar D,...Go to contribution page
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The CDF Collaboration (Various)Heavy Flavor Physics [bottom, charm, tau]The CDFII detector at the Fermilab Tevatron has now collected more than 5 fb-1 of data, and is the ideal place to search for rare and forbidden heavy flavor decays. Here we report recent results for rare decays of B and D hadrons with a lepton pair in the final state.Go to contribution page
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Owen Long (University of California Riverside)CP-violationWe present improved measurements of the branching fraction, the longitudinal polarization fraction f_L, and the direct CP asymmetry Acp in the B meson decay channel B+ --> rho+ rho0. The data sample was collected with the BaBar detector at SLAC. The results are BF(B+ --> rho+ rho0) = (23.7 +/- 1.4 +/- 1.4) x 10^-6, f_L = 0.950 +/-...Go to contribution page
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Owen Long (University of California Riverside)CP-violationWe present updated results from an analysis of B0->rho+rho- decays using the full Y(4S) data sample collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC.Go to contribution page
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Mohamed Assad Abdel-Raouf (United Arab Emirates Un iversity, College of Science)Poster SessionThe successful operation of the LHC facilities at CERN and the production of unlimited number of particles and antiparticles at high energies raise the challenging question about the possible cooling of these particles and the enhancement of matter-antimatter physics. Particularly, of great interest is the realization of research channels similar to the "ALPHA" and "ATRAP' experiments. In...Go to contribution page
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Owen Long (University of California Riverside)CP-violationWe present the measurement of the branching fractions of neutral and charged B meson decays to K1(1270) pi and K1(1400) pi and the estimation of the weak CKM angle alpha from the B0 decays to a1(1260) pi. The data sample collected with the BaBar detector at the PEP-II asymmetric-energy B factory at SLAC represents 465 x10^6 B Bbar pairs.Go to contribution page
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Owen Long (University of California Riverside)CP-violationWe present updated measurements of Branching Fractions for neutral B meson decays to eta K^0, eta eta, eta' eta', eta phi, eta omega, eta' phi, eta' omega, and branching fractions and CP-violating charge asymmetries for charged B decays to eta K^+, eta pi^+, eta' K^+, and eta' pi^+. The data sample collected with the BaBar detector at the...Go to contribution page
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Owen Long (University of California Riverside)CP-violationWe present improved measurements of the branching fractions and CP asymmetries in the decays B+->K+pi0, B+->pi+pi0 and B0->pi0pi0. This update is based on 467 Y(4S)->BBbar decays, constituting the complete set of data collected at the Y(4S) resonance by the BaBar experiment at the SLAC PEP-II B-factory. We determine constraints on the Unitarity Triangle angle alpha from the...Go to contribution page
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Owen Long (University of California Riverside)CP-violationWe present an updated measurement of the direct CP asymmetries A_CP+/- and the ratios of the branching fractions R_CP+/- for the decay B- --> D0_CP K- and its charge conjugate, where D0_CP is reconstructed in both non-CP flavor eigenstates and in CP (even and odd) eigenstates. The analysis exploits the full data sample collected with the BaBar detector at the PEP-II e+ e- storage ring,...Go to contribution page
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Owen Long (University of California Riverside)CP-violationUsing 467 million Upsilon(4S) --> B Bbar decays collected with the BaBar detector at the PEP-II B factory, we report on improved measurements of the branching fractions of B0bar --> D(*)0 K_S0 along with a measurement of the weak phase 2 beta + gamma obtained from a time-dependent analysis of the aforementioned decays.Go to contribution page
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Owen Long (University of California Riverside)CP-violationWe present improved measurements of the CP-violating charge asymmetries and branching fractions in the decays B+ --> K0pi+ and B+ --> K0barK+. The results are based on all data collected at the Y(4S) resonance by the BaBar experiment at SLAC. Signal yields and CP-violating asymmetries are determined simultaneously using kinematic and particle-identification information in a...Go to contribution page
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Owen Long (University of California Riverside)CP-violationWe present improved measurements of the branching fraction and the CP-violating parameters S and C in the time evolution of the B0 --> K0K0bar system based on all data collected at the Y(4S) resonance by the BaBar experiment at SLAC. Signal yields and CP-violating asymmetries are determined simultaneously using kinematic and B0 flavor-tagging information in a multidimensional...Go to contribution page
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Owen Long (University of California Riverside)CP-violationWe present measurements of the CP-violating parameters in the decays B0 --> pi+pi- and B0 --> K+pi- based on all data collected at the Y(4S) resonance by the BaBar experiment at SLAC. We use kinematic and particle-identification information to determine simultaneously in a multidimensional maximum-likelihood fit the CP-violating parameters Spipi and Cpipi that describe the time...Go to contribution page
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Owen Long (University of California Riverside)Heavy Flavor Physics [bottom, charm, tau]In a sample of 467 million B Bbar pairs collected with the BaBar detector at the PEP-II collider at SLAC, we observe the decay B0bar --> Lambda_c+ pbar pi0 and measure its branching fraction. An enhancement in the invariant mass of the baryon-antibaryon system at threshold is also observed. No evidence for resonances is found and we calculate a 90% upper limit of the branching fraction...Go to contribution page
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Owen Long (University of California Riverside)Heavy Flavor Physics [bottom, charm, tau]We present a measurement of the branching fractions of the 22 decay channels B0 and B+ to D(*)bar D(*) K, where D(*)bar and D(*) are fully reconstructed. The B0 and B+ mesons are reconstructed in a sample of hadronic events for all the possible Dbar D K modes, namely B0 --> D(*)- D(*)0 K+, D^(*)- D(*)+ K0, D(*)0bar D(*)0 K0 and B+ --> D(*)0bar D(*)+ K0, D(*)0bar D(*)0 K+, D(*)- D(*)+ K+....Go to contribution page
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Owen Long (University of California Riverside)CP-violationWe present an updated measurement of the CKM unitarity triangle angle gamma using a Dalitz plot analysis of neutral D meson decays to the K0_S pi+ pi- and K0_S K+ K- final states produced in the processes B-/+ --> D(*) K-/+, with D* --> D pi0, D gamma, and B-/+ --> D K*-/+, with K*-/+ --> K0_S pi-/+. The analysis is based on the complete data sample consisting of 467 million B Bbar pairs...Go to contribution page
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Aurelio Juste (Fermilab), H Wahl (Florida State University), Stefan Soldner-Rembold (University of Manchester)Electroweak Physics [W/Z]We present a measurement of the integrated forward-backward charge asymmetry in top-antitop quark pair (ttbar) production in proton-antiproton collisions in the lepton plus jets final state. Using a b-jet tagging algorithm and kinematic reconstruction assuming ttbar+X production and decay, data collected by the D0 experiment at the Fermilab Tevatron Collider is used to measure the asymmetry...Go to contribution page
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Aurelio Juste (Fermilab), Horst Wahl (Florida State University), Stefan Soldner-Rembold (University of Manchester)Electroweak Physics [W/Z]We present the simultaneous measurement of the ratio of branching fractions, R=B(t -> Wb)/B(t -> Wq), with q being a d, s, or b quark, and the top quark pair production cross section sigma(ttbar) in the lepton plus jets channel using data at sqrt(s)=1.96 TeV collected with the D0 detector. We extract R and sigma(ttbar) by analyzing samples of events with 0, 1 and >2 identified b jets. We...Go to contribution page
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Owen Long (University of California Riverside)CP-violationWe present measurements of the time-dependent CP-violation parameters S and C in the decays of B0 mesons to the final states omega K^0_S, eta' K^0, and pi^0 K^0_S. The data sample corresponds to 467 x10^6 BBbar pairs collected by the BaBar detector at the PEP-II asymmetric-energy collider at SLAC.Go to contribution page
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Mr Stewart Brekke (Northeastern Illinois University)Accelerator PhysicsAll masses are in a state of no motion, linear, rotational and vibratory motion. Therefore, when an elementary particle is created, the energy involved in the creation, besides creating the mass, may also create a linear, rotational and/or vibratory motion of the particle singly or in some combination. and the magnitude of these various motions of the created particle may be modified...Go to contribution page
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Bing An Li (University of Kentucky)Electroweak Physics [W/Z]\documentstyle[12pt]{article} \def\today{} \textwidth 18.3cm \textheight 23.2cm \setlength{\oddsidemargin}{-1.0cm} \setlength{\evensidemargin}{-1.0cm} \topmargin -1.50cm \begin{document} \title{New dynamical gauges of the SM of EW interactions } \author{Bing An Li\\Department of Physics, Univ. of Kentucky, Lexington, USA} \maketitle In this talk it shows that new gauge fixings of...Go to contribution page
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Aurelio Juste (Fermilab), Horst Wahl (Florida State University), Stefan Soldner-Rembold (University of Manchester)Hadron SpectroscopyWe report the first observation of the doubly strange b baryon Omega-_b in the decay channel Omega-_b to J/psi Omega-, with J/psi to mu+ mu- and Omega- to Lambda K- to (p pi-)K- in ppbar collisions at sqrt{s} = 1.96 TeV. Using approximately 1.3 fb-1 of data collected with the D0 detector at the Fermilab Tevatron Collider, we observe a signal with 5.4 sigma.Go to contribution page
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154. Prospects for studying the ttbar invariant mass spectrum and the ttbar spin correlations at CMSBoaz Klima (Fermi National Accelerator Lab. (Fermilab)-Unknown-Unknown)Top Quark PhysicsThe top quark was discovered at the Tevatron in 1995. For the last decade the study of its properties has been a major theme in the worldwide experimental high energy physics program. The advent of the LHC opens up a new era in top quark physics; because of the large ttbar cross-section and the high luminosity, the LHC can be thought of as a top factory. Here we report on prospects for...Go to contribution page
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Stewart Brekke (Northeastern Illinois University)Accelerator PhysicsThe incident photon in Compton scattering may also affect the rotation and vibration of the impacted particle. Therefore, the Compton Effect formula must account for the total motion change, not just the linear motion. The Compton relation must be modified in the following manner: $\{hc/\lambda_1 + mc^2 + 1/2mv^2_1 + 1/2I\omega^2_1 + 1/2k_1x^2_1 = hc/\lambda_2 + mc^2 + 1/2mv^2_2...Go to contribution page
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Aurelio Juste (Fermilab), H Wahl (Florida State University), Stefan Soldner-Rembold (University of Manchester)Electroweak Physics [W/Z]Anomalous Wtb couplings modify the angular correlations of the top quark decay products and change the single top quark production cross section. We present limits on anomalous top quark couplings by combining information from W boson helicity measurements in top quark decays and anomalous coupling searches in the single top quark final state. We set limits on right-handed vector...Go to contribution page
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Aurelio Juste (Fermilab), Horst Wahl (Florida State University), Stefan Soldner-Rembold (University of Manchester)Beyond the Standard ModelWe report on a study of events containing at least two muons produced in ppbar collisions at sqrt{s}=1.96 TeV, performed at the D0 experiment using data corresponding to 0.9 fb-1 of integrated luminosity collected during 2008. Motivated by a recent claim of an excess in muons produced at large radius by the CDF collaboration, we study muons that appear to be produced with a radius between...Go to contribution page
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Boaz Klima (Fermi National Accelerator Lab. (Fermilab)-Unknown-Unknown)Beyond the Standard ModelThe new energy regime that becomes accessible at the LHC will allow to extend the search region for 4th generation of quarks and leptons beyond existing constraints. Two studies covering both the low-mass and high-mass $b'$ search regions are performed. Using leading order cross section for $b'$ production, we determine the significance expected for an observation at up to $1$/fb data at...Go to contribution page
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Aurelio Juste (Fermilab), H Wahl (Florida State University), Stefan Soldner-Rembold (University of Manchester)Beyond the Standard ModelWe present results of searches for unique experimental signatures that might arise from a hidden sector extension (hidden valley) of the standard model. Reduced couplings to the hidden sector can result in long-lived particle decays that result in highly displaced vertices from di-leptons or di-jets. By searching for such signatures, D0 extends its discovery potential into...Go to contribution page
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Owen Long (University of California Riverside)CP-violationWe report on the search for the decays B+ --> D+ K0 and B+ --> D+ K*0 using 467 million B Bbar pairs collected at the Upsilon(4S) resonance with the BaBar detector at the PEP-II B factory at SLAC.Go to contribution page
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Owen Long (University of California Riverside)Heavy Flavor Physics [bottom, charm, tau]Using the BaBar data sample of 455 million B Bbar pairs, we measure the branching fractions for ten Cabibbo-favored B decays to final states of the form B0bar,B- --> D(*) p pbar n pi, n=0,1,2 and study their decay dynamics.Go to contribution page
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john brandenburg (Orbital Technologies Corporation)Beyond the Standard ModelIn the GEM unification theory ( Brandenburg 2007) a deep connection is found between alpha, the fine structure constant, and the proton/electron mass ratio. This is understood since the Wyler-Lenz formula (Wyler 1971) for alpha and the Wyler-Lenz proton/electron mass ratio formula can be hueristically derived by the assumption Planckian spectra in the proton and in the vacuum. It is found...Go to contribution page
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