-
Massimiliano Bellomo (CERN)18/07/2013, 09:00Top and Electroweak PhysicsTalk presentationW and Z boson production have been measured in the electron, muon and tau decay channels. Total and differential cross sections, defined in terms of the decay lepton kinematics, have been measured as a function of rapidity and transverse momentum. Precise measurements of W and Z production, including the polarisations of W bosons and of tau leptons produced in W decays are presented. They...Go to contribution page
-
Sangeun Lee (Kyungpook National University (KR))18/07/2013, 09:20Top and Electroweak PhysicsTalk presentationWe present selected measurements done with W and Z bosons performed with the CMS detector, based on samples of events collected during 2011 and 2012 physics runs. Measurements include W and Z inclusive cross sections, the lepton charge asymmetry in W events, and differential cross sections of Z and Drell-Yan production.Go to contribution page
-
Stefan Soldner-Rembold (University of Manchester), Stefan Soldner-Rembold (University of Manchester (GB))18/07/2013, 09:40Top and Electroweak PhysicsTalk presentationWe present measurements by the CDF and D0 collaborations of properties of W and Z bosons produced in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV at Fermilab's Tevatron Collider. These measurements provide stringent tests on perturbative QCD calculations and are sensitivive to parton distribution functions.Go to contribution page
-
Tara Shears (University of Liverpool (GB))18/07/2013, 10:00Top and Electroweak PhysicsTalk presentationWe report measurements of electroweak boson production in the forward region, using data collected at the LHCb experiment with a centre of mass energy of √s=7 TeV with an integrated luminosity of up to 1.0 fb–1. W and Z bosons are reconstructed in leptonic decay channels, and their cross-sections determined using data-driven techniques. All results are compared to NNLO predictions.Go to contribution page
-
Dr Junpei Maeda (Tokyo Metropolitan University)18/07/2013, 10:15Top and Electroweak PhysicsTalk presentationA search for events ep-> ep Z0 has been performed in ep collisions at HERA using the ZEUS detector. The search is based on the entire HERA-I and HERA-II data set, amounting to 0.49 fb-1 of integrated luminosity. The Z0 was searched in the di-jet decay mode with elastic condition defined by etamax < 3, where etamax is defined as the pseudorapidity of the energy deposit in the calorimeter...Go to contribution page
-
Tibor Kurca (Universite Claude Bernard-Lyon I (FR))18/07/2013, 11:00Top and Electroweak PhysicsTalk presentationWe present a measurement of the mass of the W boson using the D0 detector and the full Run II dataset. Decays of the W into e \nu are selected and the transverse momentum of the electron, the transverse momentum of the neutrino, the transverse mass of the system, and other new variables are considered in the extraction of the mass.Go to contribution page
-
Alessandro Vicini (Università degli Studi e INFN Milano (IT))18/07/2013, 11:20We will review the present status in MW measurements, discussing the recent progress in the development of the Montecarlo generators used in the extraction of the mass value and commenting the role of the proton PDFs as one important source of systematic uncertainty.Go to contribution page
-
Alain Blondel (Universite de Geneve (CH))18/07/2013, 11:35Top and Electroweak PhysicsAfter the Higgs boson discovery by the LHC experiments at 126 GeV, the Standard Model has no free parameters left and measurements sensitive to Electroweak radiative corrections constitute powerful tests of the existence of weakly interacting New Physics beyond the TeV scale. TLEP is a high luminosity circular e+e- collider to be fit in a 80-100 km tunnel as precursor and companion of a 100...Go to contribution page
-
Tobias Kasprzik (KIT, Karlsruhe)18/07/2013, 11:50Top and Electroweak PhysicsTalk presentationVector-boson pair production is of great phenomenological importance at the LHC. These processes not only constitute irreducible backgrounds SM Higgs production and various new physics signatures, they may also allow us to study the non-abelian structure of the SM at highest energies and provide the opportunity to search for anomalous couplings. In this talk we review the status of the...Go to contribution page
-
Ben Cooper (University of London (GB))18/07/2013, 12:15Top and Electroweak PhysicsTalk presentationThe production of heavy flavour in association with a W or Z boson represents an important process to study QCD. High precision is achieved in measurements of differential cross sections and comparisons are made to stateoftheart NLO QCD calculations. Measurement of W+c production cross section has a unique sensitivity to the strangequark density, which is poorly known at low x. W+b...Go to contribution page
-
Isabel Ojalvo (University of Wisconsin (US))18/07/2013, 12:30Top and Electroweak PhysicsTalk presentationProduction and hadronization of heavy quarks (b and c) in association with the W boson in proton-proton collisions is only partially understood. Experimental measurements are necessary to choose amongst the phenomenological models and parameters. Using the LHC proton-proton collision data collected in 2011 at a centre of mass energy of 7 TeV, we present two studies (1) W+c production, where...Go to contribution page
-
Louis Helary (Boston University (US))18/07/2013, 12:45Top and Electroweak PhysicsTalk presentationThe integrated and differential fiducial cross sections for the production of a W or Z boson in association with a highenergy photon are measured. Events are selected using leptonic decays of the W and Z bosons, including the Z->nu nu decay channel. The data are used to test the electroweak sector of the Standard Model and search for evidence for new phenomena. The measurements are used...Go to contribution page
-
Chia-Ming Kuo (National Central University (TW))18/07/2013, 14:30Top and Electroweak PhysicsTalk presentationWe present studies of diboson production in pp collisions at 7 TeV and 8 TeV center-of-mass energy based on data recorded by the CMS detector at the LHC in 2011 and 2012. These include precise measurements of W and Z production in association with a photon, as well as diphoton production. The results are interpreted in terms of constraints on anomalous triple gauge couplings.Go to contribution page
-
Jianbei Liu (Univ. of Science & Tech. of China (CN))18/07/2013, 14:45Top and Electroweak PhysicsTalk presentationThe measurement of the WW diboson production cross section in protonproton interactions is reported from the ATLAS experiment. The analysis requires heavy bosons to decay leptonically, using ee, emu and mumu final states associated with large missing energy. The data are used to test the electroweak sector of the Standard Model and search for evidence for new phenomena. The cross section...Go to contribution page
-
Advait Neel Nagarkar (Ohio State University (US))18/07/2013, 15:00Top and Electroweak PhysicsTalk presentationThe measurement of the WZ diboson production cross section in 7 and 8 TeV protonproton interactions is reported from the ATLAS experiment. The measurement is derived from events in which bosons decay leptonically with electrons, muons, and missing energy in the final state. The data are used to test the electroweak sector of the Standard Model and search for evidence for new phenomena. The...Go to contribution page
-
Andrea Bocci (Duke University (US))18/07/2013, 15:15Top and Electroweak PhysicsTalk presentationThe measurement of the ZZ diboson production cross section in 7 and 8 TeV protonproton interactions is reported from the ATLAS experiment. The measurement is derived using purely leptonically decaying bosons with electrons, muons, and missing energy in the final state. The data are used to test the electroweak sector of the Standard Model and search for evidence for new phenomena. The...Go to contribution page
-
Jordi Duarte Campderros (Universidad de Cantabria (ES))18/07/2013, 15:30Top and Electroweak PhysicsTalk presentationWe present studies of diboson production in pp collisions at 7 TeV and 8 TeV center-of-mass energy based on data recorded by the CMS detector at the LHC in 2011 and 2012. These include precise measurements of WW, WZ, and ZZ production at the LHC. The results are interpreted in terms of constraints on anomalous triple gauge couplings.Go to contribution page
-
Sudeshna Banerjee (Tata Inst. of Fundamental Research (IN))18/07/2013, 15:45Top and Electroweak PhysicsTalk presentationWe present measurements of WW and ZZ production cross sections, and anomalous quartic gauge couplings in p\bar{p} collisions at 1.96 TeV with Run II data from 8.6 fb−1 to 9.9 fb−1 collected by the D0 detector at the Fermilab Tevatron Collider. In the WW cross section measurement, the WW -> ee + MET, WW -> \mu\mu + MET, and WW -> e\mu + MET decay channels are used to measure the total and...Go to contribution page
-
Paul Fiedler18/07/2013, 16:30Top and Electroweak PhysicsTalk presentationI give an overview on the current theoretical status of the top quark pair production total cross section focusing on the recently derived NNLO result for the gluon fusion channel, which completes the fixed order NNLO calculations. Using our result to provide the NNLO+NNLL prediction for the total cross section, I discuss its phenomenological impact and compare it with the most precise LHC and...Go to contribution page
-
Anna Henrichs (Yale University (US))18/07/2013, 16:50Top and Electroweak PhysicsTalk presentationMeasurements of the top quark production cross sections in proton-proton collisions with the ATLAS detector at the Large Hadron Collider are presented. The measurement require no, one or two electrons or muons in the final state (single lepton, dilepton, hadronic channel). In addition, the decay modes with tau leptons are tested (channels with tau leptons).Go to contribution page
-
Michael Maes (Vrije Universiteit Brussel (VUB) - Interuniversitary Institute for high energies (IIHE))18/07/2013, 17:10Top and Electroweak PhysicsTalk presentationPrecision measurements are presented of the top-quark pair inclusive production cross section in proton-proton collisions at the LHC at centre-of-mass energies of 7 !TeV and 8 !TeV. The data are collected with the CMS experiment during the years 2011 and 2012. The analyses include all top quark pair final states with the exception of events with two tau-leptons in the final state. In most...Go to contribution page
-
Nikolaos Kidonakis (Kennesaw State University)19/07/2013, 09:00Top and Electroweak PhysicsTalk presentationI present higher-order results, based on NNLL resummation, for differential transverse momentum and rapidity distributions in processes involving top quarks. In particular results are presented for top-pair production and for single-top production in all three channels,Go to contribution page
-
Philip Hugh Symonds (Brunel University (GB))19/07/2013, 09:15Top and Electroweak PhysicsTalk presentationDifferential top quark pair production cross sections are measured in proton-proton collisions at the LHC at centre-of-mass energies of 7 and 8 !TeV, using data collected by the CMS experiment in the years 2011 and 2012. The differential cross sections are measured as functions of various kinematic observables, including the transverse momentum and rapidity of the (anti)top quark and the...Go to contribution page
-
Ford Garberson (Yale University (US))19/07/2013, 09:35Top and Electroweak PhysicsTalk presentationMeasurements of the top quark production cross sections in proton proton collisions with the ATLAS detector at the Large Hadron Collider are presented. The measurement require no, one or two electrons or muons in the final state (single lepton, dilepton, hadronic channel). In addition, the decay modes with tau leptons are tested (channels with tau leptons). The main focus are measurements...Go to contribution page
-
Maria Veronica Sorin (Universitat Autònoma de Barcelona (ES))19/07/2013, 09:55Top and Electroweak PhysicsTalk presentationWe present the most recent measurements by the CDF and D0 Collaborations of inclusive and differential top quark pair cross sections in proton-antiproton collisions at sqrt(s)=1.96 TeV at Fermilab's Tevatron Collider . The measured spectra, binned in several observables, are compared to those obtained from the Monte Carlo simulation and QCD at approximate NNLO.Go to contribution page
-
Zoltan Laszlo Trocsanyi (University of Debrecen (HU))19/07/2013, 10:15Top and Electroweak PhysicsTalk presentationWe simulate the hadroproduction of a t tbar pair in association with a b bbar pair at the LHC using the PowHel program. The generated events are stored according to the Les-Houches event format. We interface those events to the PYTHIA shower Monte Carlo program, allowing for decays of massive particles, showering and hadronization, thus leading to predictions for differential...Go to contribution page
-
Matthew Dowling (DESY)19/07/2013, 11:00Top and Electroweak PhysicsTalk presentationBetween the Tevatron and LHC, top-quark physics is now becoming an area for precision physics. This has lead to an increase in theoretical activity to match the experimental accuracy of top anti-top production. In this talk I discuss the difficulty in properly defining the top-quark mass as measured by experiments and present results for differential distributions of top-quark pair production...Go to contribution page
-
Gabriele Compostella (Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) (D)19/07/2013, 11:20Top and Electroweak PhysicsTalk presentationMeasurements of the top quark mass in proton-proton collisions with the ATLAS detector at the Large Hadron Collider are presented. They are performed in various channels: single lepton, dilepton and all-hadronic final states. The most precise measurement is obtained in the single lepton channel using a 3-dimensional template technique which determines the top quark mass together with a global...Go to contribution page
-
Dr Hartmut Stadie (Hamburg University (DE))19/07/2013, 11:40Top and Electroweak PhysicsTalk presentationMeasurements of the top quark mass are presented using data collected by the CMS experiment in proton-proton collisions at the LHC at centre-of-mass energies of 7 and 8 TeV. Analyses in several decay channels of top quark pair events are employed to determine the top quark mass. The results are combined and compared to the world average.Go to contribution page
-
Reinhild Peters (Georg-August-Universitaet Goettingen (DE))19/07/2013, 12:00Top and Electroweak PhysicsTalk presentationThe top quark is the heaviest known elementary particle and its mass is a free parameter of the Standard Model. We present the most recent measurement of the top quark mass by the D0 collaboration at the Tevatron proton-antiproton collider in lepton-plus-jet and dilepton channels.Go to contribution page
-
Stijn Blyweert (Vrije Universiteit Brussel (BE))19/07/2013, 12:20Top and Electroweak PhysicsTalk presentationMeasurements of the top quark mass employing alternative methods are presented using data collected by the CMS experiment in proton-proton collisions at the LHC in the years 2011 and 2012 at centre-of-mass energies of 7 and 8 !TeV. The alternative methods include the use of endpoint distributions as well as the study of possible model dependencies of the top mass measurement on the event...Go to contribution page
-
Dr Philipp Roloff (CERN)19/07/2013, 12:40Top and Electroweak PhysicsTalk presentationLinear electron-positron colliders provide possibilities for top quark mass measurements with unprecedented precision, which are of high relevance to explore the stability of the Standard Model. Two complementary techniques for the measurement of the top mass in e+e- annihilation exist: The direct reconstruction of the invariant mass of the top quark decay products at energies above the top...Go to contribution page
-
Attila Krasznahorkay (New York University (US))19/07/2013, 14:30Top and Electroweak PhysicsTalk presentationMeasurements of the single top quark production cross sections in proton proton collisions with the ATLAS detector at the Large Hadron Collider are presented. Measurements of single topquark production in the tand Wtchannels are shown and determination of the CKM matrix element |Vtb| is discussed. We also discuss the separate measurement of the top and antitop quark cross section and...Go to contribution page
-
Alberto Orso Maria Iorio (Universita e INFN (IT))19/07/2013, 14:50Top and Electroweak PhysicsTalk presentationMeasurements are presented of t-channel single top quark production in proton-proton collisions at the LHC at centre-of-mass energies of 7 and 8 TeV, using data collected with the CMS experiment during the years 2011 and 2012. The analyses consider decay channels where the W from the top decays into electron-neutrino or muon-neutrino, and makes use of kinematic characteristics of electroweak...Go to contribution page
-
Dr Gabriele Benelli (University of Kansas (US))19/07/2013, 15:05Top and Electroweak PhysicsTalk presentationMeasurements of single top quark production in the tW-channel in pp collisions are presented. In the tW-channel a top quark is produced in association with a W boson. The data were collected in the years 2011 and 2012 at centre-of-mass energies of 7 and 8 TeV. The experimental signature is similar to top pair production, and there is interference at higher orders between the two processes. The...Go to contribution page
-
Aran Garcia-Bellido Alvarez De Miranda (University of Rochester (US))19/07/2013, 15:20Top and Electroweak PhysicsTalk presentationWe present the most recent results from the CDF and D0 Collaborations on searches for electroweak top quark production in proton-antiproton collisions at sqrt(s)=1.96 TeV at Fermilab's Tevatron Collider. Single top signal is separated from background processes using multivariate analysis methods. The final result is compared to state-of-art theory predictions.Go to contribution page
-
Stefano Antonelli (Universita e INFN (IT))19/07/2013, 15:40Top and Electroweak PhysicsTalk presentationA search for single-top production, ep -> etX, has been performed with the ZEUS detector at HERA using data corresponding to an integrated luminosity of 0.37 fb-1. No evidence for top production was found, consistent with the expectation from the Standard Model. Limits were computed for single-top production via flavour changing neutral current transitions. The result was combined with a...Go to contribution page
-
Chung Kao19/07/2013, 16:00Top and Electroweak PhysicsTalk presentationWe investigate the prospects for discovering a top quark decaying into one light Higgs boson along with a charm quark in top quark pair production at the CERN Large Hadron Collider (LHC). A general two Higgs doublet model is adopted to study the signature of flavor changing neutral Higgs decay $t \to c\phi^0$, or $\bar{t} \to \bar{\phi^0$ where $\phi^0$ could be CP-even ($H^0$) or CP-odd...Go to contribution page
-
George Wei-Shu HOU19/07/2013, 16:15Top and Electroweak PhysicsTalk presentationThe Higgs boson $h$ and the top quark $t$ are the two most massive and newest particles ever discovered. If $t\to ch$ occurs at a couple of percent level, the observed $ZZ^*$ and $\gamma\gamma$ signal events for the Higgs boson may have accompanying $cbW$ activity coming from $t\bar t$ feeddown. A general two Higgs doublet model brings in new $ct$, $cc$ and $tt$ couplings that modify...Go to contribution page
-
Sandra Leone (Sezione di Pisa (IT))19/07/2013, 17:00Top and Electroweak PhysicsTalk presentationWe present the most recent results from the CDF and D0 Collaborations on top quark properties at Fermilab's Tevatron Collider. In particular we discuss the spin correlation measurements, top width measurement, V_tb measurements, searches for anomalous top quark couplings, and searches for Lorentz invariance violation.Go to contribution page
-
Lucia Masetti (Johannes-Gutenberg-Universitaet Mainz (DE))19/07/2013, 17:20Top and Electroweak PhysicsTalk presentationProperties of the top quark are measured with the ATLAS detector using the Large Hadron Collider protonproton collisions data. Measurements of the topquark mass, charge and polarisation, as well as of the polarization of W bosons in top quark decays to probe the Wtbvertex are presented. The search for flavour changing neutral current processes in top quark decays is reviewed.Go to contribution page
-
Dr Mara Senghi Soares (Centro de Investigaciones Energ. Medioambientales y Tecn. - (ES)19/07/2013, 17:40Top and Electroweak PhysicsTalk presentationSeveral measurements of top quark properties are presented using data collected by the CMS experiment during the years 2011 and 2012. The top quark polarization as well as the polarization of W bosons in top quark decays are measured. The W-boson helicity fractions and angular asymmetries are extracted and limits on anomalous contributions to the Wtb vertex are determined. Furthermore, a...Go to contribution page
-
Liza Mijovic (CEA-Saclay)19/07/2013, 18:00Top and Electroweak PhysicsTalk presentationIn protonproton collisions at the Large Hadron Collider, pairs of top and antitop quarks are expected to be mostly produced through gluon fusion, in contrast to production at the Tevatron, where quark annihilation dominates. Making use of the large number of top quark pairs, we present measurements of the spin correlation between top and antitop quarks as well as of the topquark charge...Go to contribution page
-
Tyler Mc Millan Dorland (Deutsches Elektronen-Synchrotron (DE))19/07/2013, 18:20Top and Electroweak PhysicsTalk presentationMeasurements are presented of the properties of top quark pairs in production from proton-proton collisions at the LHC. The data were collected at pp centre-of-mass energies of 7 and 8 !TeV by the CMS experiment during the years 2011 and 2012. The charge asymmetry is measured both inclusively and differentially as function of the invariant mass, the rapidity and the transverse momentum of the...Go to contribution page
-
r Demina (University of Rochester (US)), Dr regina demina (university of rochester)19/07/2013, 18:40Top and Electroweak PhysicsTalk presentationWe present the most recent measurements by the CDF and D0 Collaborations of forward-backward asymmetries in top-antitop quark pair production in proton-antiproton collisions. Measurements are corrected for acceptance and resolution effects and compared to theory predictions.Go to contribution page
-
Stanislav Dubnicka (Institute of Physics)20/07/2013, 09:00Top and Electroweak PhysicsTalk presentationDescription of the nucleon electromagnetic structure by advanced Unitary and Analytic approach, respecting SU(3) symmetry and analyzing also the recent Mainz MAMI data with impact on the proton charge radius to be compared with the results from the muon hydrogen atom spectroscopy.Go to contribution page
-
589. The QWeak Experiment: A measurement of the proton weak charge and up-down quark weak couplings.Michael Gericke (University of Manitoba)20/07/2013, 09:20Top and Electroweak PhysicsTalk presentationThe Qweak collaboration recently completed a two year long program of measurements, with the aim of making a precision measurement of the parity violating analyzing power from elastic scattering of 1.16 GeV, longitudinally polarized, electrons on protons at low momentum transfer $Q^2 = 0.025~\rm{GeV/c^2}$. At low momentum transfer, the measured asymmetry is directly related to the weak charge...Go to contribution page
-
Markus Cristinziani (Universitaet Bonn (DE))20/07/2013, 09:40Top and Electroweak PhysicsTalk presentationStarted at the end of 2011 the TOPLHCWG is in charge to prepare and perform combinations of top related measurements from the LHC experiments. So far a first top quark mass combination was released along with combinations of the top quark pair production cross-section and the W helicity in top quark decays. In this talk the challenges and the progress in such combinations are presented...Go to contribution page
-
Max Baak (CERN)20/07/2013, 10:00Top and Electroweak PhysicsTalk presentationIn light of the discovery of the Higgs-like boson by the ATLAS and CMS Collaborations at the LHC, we -- the Gfitter group -- present an update of the global Standard Model (SM) fit to electroweak precision data. Assuming the new particle to be the SM Higgs boson, all fundamental parameters of the SM are known, allowing for the first time to overconstrain the SM at the electroweak scale and...Go to contribution page
-
Jenny List (Deutsches Elektronen-Synchrotron (DE))20/07/2013, 11:00Top and Electroweak PhysicsTalk presentationA unique feature of the future e+e- linear collider is the ability to provide longitudinal polarised beams. In order to fully exploit the benefits of the polarised beams, the luminosity weighted average polarisation needs to be known with a permille-level precision. A method for measuring the beam polarisation from the collision data is presented. It is based on a realistic...Go to contribution page
-
Roman Poeschl (Universite de Paris-Sud 11 (FR))20/07/2013, 11:20Top and Electroweak PhysicsTalk presentationTop quark production in the process e+e- -> ttbar at a future linear electron positron collider with polarised beams is a powerful tool to determine the scale of new physics. The presented study assumes a centre-of-mass energy of 500 GeV and an integrated luminosity of 500 fb-1 equally shared between the incoming beam polarisations of (Pe+, Pe-) = (+/-0.8,-/+0.3). Events are selected in...Go to contribution page
-
Gudrid Moortgat-Pick (Hamburg University (DE))20/07/2013, 11:40Top and Electroweak PhysicsTalk presentationThe impact of beam polarization (e- and e+) for the physics potential of a LC will be discussed and weighted with regard to the expected LHC prospects. In particular new examples in the different physics areas as in top physics as well as in electroweak physics (Z', heavy leptons, alternatives) will shortly be discussed. In particular the new aspect of outlining the physics potential...Go to contribution page
-
Graziano Venanzoni (Istituto Nazionale Fisica Nucleare (IT))20/07/2013, 12:00Top and Electroweak PhysicsTalk presentationWe have recently completed and published the third independent measurement of the e+e- --> pi+pi-(gamma) cross section below 1 GeV, which is particularly important to test the Standard Model calculation for the (g-2) of the muon, where a long standing 3 sigma discrepancy is observed. The previous measurements, with the photon emitted at small and large angle, respectively, were...Go to contribution page
-
Peter Marquard (KIT)20/07/2013, 12:20Top and Electroweak PhysicsTalk presentationThe anomalous magnetic moment of both electron and muon are one of the theoretically best predicted quantities. The MSbar-onshell is a fundamental relation of QCD and an important building block for the measurement of the top-quark mass at a future linear collider. Both quantities lead to the same class of diagrams and can be considered together. We present first steps of the...Go to contribution page
-
Marek Schoenherr (University of Durham (GB))20/07/2013, 12:40Top and Electroweak PhysicsTalk presentationIn this talk the application of the recently introduced methods to merge NLO calculations of successive jet multiplicities to the production of top pairs in association with jets will be discussed. Emphasis will be put on the achieved theoretical accuracy and the associated perturbative and non-perturbative error estimates. The production of a vector boson in association, constituting a main...Go to contribution page
Choose timezone
Your profile timezone: