Robert Harlander
(Bergische Universitaet Wuppertal (DE))
13/05/2013, 12:45
Lashkar Kashif
(University of Wisconsin (US))
13/05/2013, 14:30
Chiara Bianchin
(University of Utrecht (NL))
13/05/2013, 14:30
Loic Henri Antoine Manceau
(Universita e INFN (IT))
13/05/2013, 14:45
Pasquale Musella
(CERN)
13/05/2013, 14:45
Margherita Ghezzi
(Roma 1, La Sapienza (IT))
13/05/2013, 15:00
Cyrille Marquet
(Ecole Polytechnique)
13/05/2013, 15:00
Victor Coco
(NIKHEF (NL))
13/05/2013, 15:15
Gabriel Stoicea
(Horia Hulubei National Institute of Physics and Nuclear Enginee)
13/05/2013, 15:15
Rogerio Rosenfeld
(UNESP - Universidade Estadual Paulista (BR))
13/05/2013, 15:30
Maria Nicassio
(GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
13/05/2013, 15:45
David Olivier Jamin
(Academia Sinica (TW))
13/05/2013, 15:45
Jesus Guillermo Contreras Nuno
(Centro Invest. Estudios Avanz. IPN (MX))
13/05/2013, 16:00
Niklas Mohr
(ETH Zurich (CH))
13/05/2013, 16:00
Martin Flechl
(Albert-Ludwigs-Universitaet Freiburg (DE))
13/05/2013, 16:45
Begona De La Cruz
(CIEMAT (ES))
14/05/2013, 09:30
Michele Floris
(CERN)
14/05/2013, 10:20
Marco Bonvini
(Deutsches Elektronen-Synchrotron (DE))
14/05/2013, 11:15
Leif Lönnblad
(Lund University (SE))
14/05/2013, 11:15
Emilien Chapon
(CEA Saclay / IRFU)
14/05/2013, 11:30
Lea Michaela Caminada
(Lawrence Berkeley National Lab. (US))
14/05/2013, 11:30
Matthias Steinhauser
(KIT)
14/05/2013, 11:45
Marco Musich
(INFN Torino (IT))
14/05/2013, 11:45
Andrea Davide Benaglia
(Universita & INFN, Milano-Bicocca (IT))
14/05/2013, 12:00
Stefano Augusto Pozzorini
(Universitaet Zuerich (CH))
14/05/2013, 12:00
Gabriel John Facini
(CERN)
14/05/2013, 12:15
Lee Sawyer
(Louisiana Tech University (US))
14/05/2013, 12:30
Boris Tuchming
(CEA Saclay (FR))
14/05/2013, 12:30
Joao Gentil Mendes Saraiva
(LIP Laboratorio de Instrumentacao e Fisica Experimental de Part (P))
14/05/2013, 12:45
Jernej Kamenik
(Jozef Stefan Institute)
14/05/2013, 14:30
Javier Lopez Albacete
(IPhT-CEA)
14/05/2013, 14:30
Maximilian Schlupp
(Technische Universitaet Dortmund (DE))
14/05/2013, 14:45
Jorge Casalderrey Solana
(University of Barcelona (ES))
14/05/2013, 14:45
Thiago Tomei Fernandez
(UNESP - Universidade Estadual Paulista (BR))
14/05/2013, 15:00
Cibran Santamarina Rios
(Universidade de Santiago de Compostela (ES))
14/05/2013, 15:00
Stefanos Leontsinis
(National Technical Univ. of Athens (GR), Brookhaven National Laboratory (US))
14/05/2013, 15:15
Nicolas Arbor
(Centre National de la Recherche Scientifique (FR))
14/05/2013, 15:15
Francesco Barile
(Universita e INFN (IT))
14/05/2013, 15:30
Monica Pepe-Altarelli
(CERN)
14/05/2013, 15:30
Markus Fasel
(Ruprecht-Karls-Universitaet Heidelberg (DE))
14/05/2013, 15:45
Amal Sarkar
(iit-bombay)
14/05/2013, 15:45
Carlos Lourenco
(CERN)
14/05/2013, 16:00
Jeroen Van Tilburg
(Ruprecht-Karls-Universitaet Heidelberg (DE))
14/05/2013, 18:05
Matteo Cacciari
(LPTHE Jussieu)
15/05/2013, 09:00
Jay Dittmann
(Baylor University (US))
15/05/2013, 09:30
Lucia Di Ciaccio
(Centre National de la Recherche Scientifique (FR))
15/05/2013, 09:55
Hermine Woehri
(CERN)
15/05/2013, 10:20
George Wei-Shu Hou
(National Taiwan University (TW))
15/05/2013, 11:15
Paul Fiedler
(RWTH Aachen (DE))
15/05/2013, 11:15
Harry Victor Cliff
(University of Cambridge (GB))
15/05/2013, 11:30
Martin Goerner
(Hamburg University (DE))
15/05/2013, 11:30
Monika Blanke
(CERN)
15/05/2013, 11:45
Kevin Daniel Finelli
(Duke University (US))
15/05/2013, 11:45
Roel Aaij
(NIKHEF (NL))
15/05/2013, 12:00
Regina Demina
(University of Rochester (US))
15/05/2013, 12:00
Tomas Pilar
(University of Warwick (GB))
15/05/2013, 12:15
Adrian Irles Quiles
(Universidad de Valencia (ES))
15/05/2013, 12:15
Rick Van Kooten
(Indiana University (US))
15/05/2013, 12:30
Pavol Bartos
(Comenius University (SK))
15/05/2013, 12:30
Paolo Maestro
(Universita degli studi di Siena (IT))
15/05/2013, 12:45
Hamed Bakhshiansohi
(School of Particles and Accelerator Inst. for Res. in Fundam. S)
15/05/2013, 12:45
Iftah Galon
(Technion, Israel Institute of Technology (IL))
15/05/2013, 13:00
Fabrice Balli
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
15/05/2013, 13:00
Risto Orava
(Helsinki Institute of Physics (FI))
15/05/2013, 14:30
Antonio Augusto Alves Junior
(Universita e INFN, Roma I (IT))
15/05/2013, 15:25
Constantinos Loizides
(Lawrence Berkeley National Lab. (US))
15/05/2013, 15:50
Andreas Weiler
(Deutsches Elektronen-Synchrotron (DE))
16/05/2013, 09:00
Laurent Vacavant
(CPPM - CNRS/IN2P3 et Aix-Marseille Université (FR))
16/05/2013, 09:30
Tulika Bose
(Boston University (US))
16/05/2013, 09:55
Alessandro Gaz
(University of Colorado at Boulder (US))
16/05/2013, 10:20
Alice Maria Donati
(Universidad de Granada)
16/05/2013, 11:15
Carl Vuosalo
(Ohio State University (US))
16/05/2013, 11:15
Matthew Beckingham
(University of Washington (US))
16/05/2013, 11:30
Francisco del Aguila
(University of Granada (ES))
16/05/2013, 11:30
Federica Primavera
(Universita e INFN (IT))
16/05/2013, 11:45
Steven Worm
(CERN)
16/05/2013, 11:45
Domenec Espriu Climent
(University of Barcelona (ES))
16/05/2013, 12:00
Jalal Abdallah
(IFAE Barcelona (ES))
16/05/2013, 12:00
Javi Serra
(Cornell University (US))
16/05/2013, 12:15
Lara Lloret Iglesias
(Universidad de Oviedo (ES))
16/05/2013, 12:15
Suen Hou
(Academia Sinica (TW))
16/05/2013, 12:30
Livia Soffi
(Universita e INFN, Roma I (IT))
16/05/2013, 12:30
Daniela Salvatore
(Universita della Calabria (IT))
16/05/2013, 12:45
Sandro Fonseca De Souza
(Universidade do Estado do Rio de Janeiro (BR))
16/05/2013, 14:30
Alex Kastanas
(University of Bergen (NO))
16/05/2013, 14:45
Alex Grecu
(Horia Hulubei NIPNE, Bucharest (RO))
16/05/2013, 14:45
Verena Ingrid Martinez Outschoorn
(Fermi National Accelerator Lab. (US))
16/05/2013, 15:00
Barbara Guerzoni
(Universita e INFN (IT))
16/05/2013, 15:05
Mirjam Lena Fehling
(Albert-Ludwigs-Universitaet Freiburg (DE))
16/05/2013, 15:15
Juan Rojo Chacon
(CERN)
16/05/2013, 15:20
Didar Dobur
(University of Florida (US))
16/05/2013, 15:30
Eram Syed Rizvi
(Queen Mary, University of London)
16/05/2013, 15:35
Claudia Giuliani
(Albert-Ludwigs-Universitaet Freiburg (DE))
16/05/2013, 15:45
Kenan Mujkic
(University College London (UK) and Deutsches Elektronen-Synchrotron (DE))
16/05/2013, 15:50
Francesco Riva
(Ecole Polytechnique Federale de Lausanne (CH))
16/05/2013, 16:00
Fabrizio Salvatore
(University of Sussex (GB))
16/05/2013, 17:15
Celso Martinez Rivero
(Universidad de Cantabria (ES))
16/05/2013, 17:40
Sigve Haug
(Universitaet Bern (CH))
16/05/2013, 18:05
Patricia Ward
(University of Cambridge (GB))
17/05/2013, 09:50
Luca Barze
(Universita e INFN (IT))
17/05/2013, 11:15
Bhaskar Dutta
(Texas A&M University)
17/05/2013, 11:15
Jack Goddard
(Queen Mary, University of London)
17/05/2013, 11:30
Marc Dunser
(Eidgenoessische Tech. Hochschule Zuerich (CH))
17/05/2013, 11:30
Matthew Ryan Relich
(University of California Irvine (US))
17/05/2013, 11:45
Francesco Romeo
(Universita e INFN (IT))
17/05/2013, 11:45
Ronan James Wallace
(University College Dublin (IE))
17/05/2013, 12:00
Gennaro Corcella
(INFN - Laboratori Nazionali di Frascati (IT))
17/05/2013, 12:00
Jorge de Blas Mateo
(University of Notre Dame)
17/05/2013, 12:15
Fedor Ratnikov
(KIT - Karlsruhe Institute of Technology (DE))
17/05/2013, 12:15
Andres Carlos Florez Bustos
(York University (CA))
17/05/2013, 12:30
Ignasi Rosell
(Universidad CEU Cardenal Herrera & IFIC, Valencia)
17/05/2013, 12:30
Hengne Li
(University of Virginia (US))
17/05/2013, 12:45
Tae Jeong Kim
(Korea University (KR))
17/05/2013, 12:45
Manuel Perez-Victoria
(University of Granada)
17/05/2013, 14:30
Jan Andre Stillings
(Universitaet Bonn (DE))
17/05/2013, 14:30
Snezana Nektarijevic
(Universite de Geneve (CH))
17/05/2013, 14:45
Davide Piccolo
(Universita e INFN (IT))
17/05/2013, 14:45
Yeng-Ming Tzeng
(National Taiwan University (TW))
17/05/2013, 15:00
Cedric Delaunay
(CERN)
17/05/2013, 15:00
Juan Antonio Aguilar Saavedra
(Universidad de Granada)
17/05/2013, 15:15
Mikael Rodriguez Chala
(LIP Laboratorio de Instrumacao e Fisica Experimental de Particu)
17/05/2013, 15:15
Lulu Liu
(University of Michigan (US))
17/05/2013, 15:30
Francesco Rubbo
(Universitat Autònoma de Barcelona (ES))
17/05/2013, 15:30
Abideh Jafari
(School of Particles and Accelerator Inst. for Res. in Fundam. S)
17/05/2013, 15:45
John Stupak
(Purdue University Calumet (US))
17/05/2013, 15:45
Stefano Camarda
(Deutsches Elektronen-Synchrotron (DE))
17/05/2013, 16:00
Christian Schwanenberger
(University of Manchester)
17/05/2013, 16:45
Maria Jose Costa
(IFIC Valencia (ES))
17/05/2013, 17:10
Justin Pilot
(University of California Davis (US))
17/05/2013, 17:35
Thomas Peitzmann
(University of Utrecht (NL))
18/05/2013, 09:50
Tatsuya Nakada
(Ecole Polytechnique Federale de Lausanne (CH))
18/05/2013, 11:45
Joseph David Lykken
(Fermi National Accelerator Lab. (US))
18/05/2013, 12:15
Manuella Vincter
(Carleton University (CA))
Poster
Experiment
Precision measurements of Drell-Yan lepton-pair production in pp collisions with the ATLAS detector at the LHC will be presented. Measurements of production cross sections and associated angular correlations can provide unique insight into perturbative QCD in the absence of colour flow between initial and final states, the V-A nature of the interactions, as well as enhance the knowledge of...
Marta Calvi
(Universita & INFN, Milano-Bicocca (IT))
LHCb has collected the world's largest sample of charmed hadrons. This sample is used to search for direct and indirect CP violation in charm, and to measure D0 mixing parameters. Preliminary measurements from several decay modes are presented, with complementary time-dependent and time-integrated analyses.
. H1 and ZEUS Collaborations
(DESY)
Measurements of open charm production cross sections in deep-inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections sigma_red^{c\bar{c}} for charm production are obtained in the kinematic range of photon virtuality 2.5
Pamela Ferrari
(NIKHEF (NL))
Combined measurements of the couplings of the newly discovered Higgs boson
are presented.
Manuel Manuel Perez-Victoria
(University of Granada)
Gauge invariance imposes model-independent correlations in the couplings and masses of heavy neutral and charged vector bosons. We show how to take advantage of these correlations in combined analyses of dilepton and lepton-plus-missing-energy signals at the LHC.
Libor Skoda
(FNSPE CTU in Prague)
Poster
Experiment
Measurements of particle production at forward rapidities in high energy p-p, p-A and A-A collisions provide access to physics processes at very low Bjorken x. These measurements will allow to study the gluon saturation scale and improve our knowledge of parton distribution in nuclei.
Specific requirements must be fulfilled for a calorimeter to successfully operate in high-multiplicity...
Marta Calvi
(Universita & INFN, Milano-Bicocca (IT))
The study of CP violation in Bs oscillations is one of the key goals of the LHCb experiment. Effects are predicted to be very small in the Standard Model but can be significantly enhanced in many models of new physics. We present the world's best measurement of the CP-violating phase phis using B0s->J/psiphi and B0s->J/psipipi decays, and of the time integrated asymmetry in semileptonic Bs...
Prof.
Francisco del Aguila
(University of Granada (ES))
Lepton number violating scalars decaying into lepton pairs,
as those mediating the see-saw of type II, always include
doubly -charged components. If these are observed at LHC,
their quantum numbers can be determined accounting for their
leptonic decays in pair and single production.
Josu Cantero Garcia
(Universidad Autonoma de Madrid (ES))
Poster
Experiment
The dynamics of isolated-photon plus jet production in pp collisions at a centre-of-mass energy of 7 TeV has been studied with the ATLAS detector at the LHC. Measurements of isolated-photon plus jet differential cross sections are presented as functions of photon transverse energy, jet transverse momentum and jet rapidity. In addition, the differential cross sections as functions of the...
Margherita Ghezzi
(Roma 1, La Sapienza)
Higgs
The discovery of a Higgs-like boson, together with no hint of the existence of any additional new particle, makes us face with the problem of finding strategies to study the properties of the electroweak simmetry breaking sector. In this talk, the effective Lagrangian that describes a light Higgs-like boson will be reviewed, focusing on the reasonable case in which the Higgs-like particle is a...
Marta Calvi
(Universita & INFN, Milano-Bicocca (IT))
We report measurements of electroweak boson production in the forward region, using data collected at the LHCb experiment with a centre of mass energy of sqrt(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.
Jorge de Blas Mateo
(University of Notre Dame)
We briefly review the global Standard Model fit to electroweak precision data. After that we analyze the electroweak constraints on new interactions, following a model-independent approach based on a general dimension-six effective Lagrangian. Finally, we also discuss the limits on several common new physics additions.
Prof.
George W.S. Hou
(National Taiwan University)
The very rare Bd --> mu+mu- decay may be the last chance for New Physics in flavor sector at the LHC, before the 13 TeV run in late 2014. Partially motivated by the known tension in sin2beta/phi1, enhancement beyond (3--4) x 10^{-10} would likely imply the effect of a fourth generation of quarks. If observed at this level, the 126 GeV boson may not be the actual Higgs boson, while the b --> d...
Jan Andre Stillings
(Universitaet Bonn (DE))
Poster
Experiment
In proton-proton collisions at the LHC, top quarks can be produced in pairs via the strong interaction and individually via the weak interaction. The weak interaction production can be subdivided into three channels: the tchannel,
the s-channel and the associated production of a
W boson and a top quark. The total production cross section of these three channels is about one third of the...
Sandro Fonseca De Souza
(Universidade do Estado do Rio de Janeiro (BR))
In this talk, recent CMS physics analysis on the measurement of central exclusive production as well as soft and hard diffractive processes are discussed. Measurement of the exclusive two-photon production of WW pairs in pp collisions at 7 TeV, based on samples of events collected during 2011 physics runs, is presented. In particular, these measurements should provide unique sensitivity to...
Alice Maria Donati
(Universidad de Granada)
We present the first complete calculation performed within the Four Dimensional Regularization scheme (FDR), namely the loop-induced on-shell amplitude for the Higgs boson decay into two photons in an arbitrary gauge. FDR is a new technique -free of infinities- for addressing multi-loop calculus, which automatically preserves gauge invariance, allowing for a 4-dimensional computation at the...
Stefanos Leontsinis
(National Technical Univ. of Athens (GR))
Poster
Experiment
ATLAS has a wide programme of study of production cross section and of properties of particles with beauty, as well as charmonium and of bottomonium states.
Recent results on the production the Y(nS), n=1-3 and of charged B mesons are discussed. In both cases, the differential
production cross section is measured over a range of transverse momentum up to about 100 GeV, much wider than in...
Thiago Tomei Fernandez
(UNESP - Universidade Estadual Paulista (BR))
The capabilities of the CMS experiment allow to investigate various hard probes, as well as bulk particle production and collective phenomena, using the calorimetry, muon and tracking systems covering a large range in pseudorapidity. In this talk selected results of the CMS experiment from pp and PbPb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV will be discussed. First results from the recent pPb...
Markus Fasel
(Ruprecht-Karls-Universitaet Heidelberg (DE))
Heavy-flavour production in proton-proton collisions serves as a precise test for perturbative QCD. Furthermore it provides the reference for the corresponding studies in heavy-ion collisions. The measurements are performed by ALICE in hadronic channels as well as in the semi-electronic decay channels at midrapidity, profiting from the excellent particle identification capabilities and the...
Hayk Pirumov
(PI Heidelberg)
Poster
Theory
The proton parton distribution functions (PDFs)
are essential for precision physics at the LHC
and other hadron colliders. Their current level
of accuracy dominates the theory uncertainties
in Higgs production and it affects substantially
theory predictions for Beyond Standard Model
high mass production.
The determination of the PDFs is a complex
endeavor involving several physics...
Marco Bonvini
(Deutsches Elektronen-Synchrotron (DE))
The large contributions of known NLO and NNLO QCD corrections to the Higgs cross section call for a reliable prediction of higher order QCD corrections.
In this talk, an approximate expression for the Higgs production inclusive cross section in gluon fusion at NNNLO in QCD with finite top mass is presented.
We argue that an accurate approximation can be constructed combining (and improving)...
Glenn Wouda
(Uppsala University)
Poster
Theory
I present a model with two scalar doublets and a softly broken Z2 symmetry, where only one of the doublets gets a vacuum expectation value and couples to fermions at tree-level. The softly broken Z2 symmetry leads to interesting phenomenology such as mixing between the two doublets and a charged scalar which can be light and dominantly decays in W gamma. The model can also naturally reproduce...
amal (For the STAR cOLLABORATION) sarkar
(Indian Institute of Techology Bombay)
The Relativistic Heavy-Ion Collider (RHIC), at BNL, has started its beam energy scan(BES) program by colliding heavy-ions extending the reach in baryonic chemical potential upto 400 MeV. One of the main goals of this beam energy scan program is to locate the critical point which is postulated to lie at the end of the phase transition boundary between partonic and hadronic matter. Finite...
Eulogio Serradilla Rodriguez
(Universidad Nacional Autonoma (MX))
The unique particle identification capabilities of ALICE at LHC allow systematic studies of the production of identified particles in pp collisions. In this talk we will present measurements of several light flavour particles, including resonances and multi-strange particles. Results will be discussed and systematically compared with data from Monte Carlo models, such as recent Pythia tunes....
Dr
Eram Rizvi
(Queen Mary, University of London)
Inclusive e\pmp single and double differential cross sections for neutral and charged current deep inelastic scattering processes are measured with the H1 detector at HERA. The data were taken at a centre-of-mass energy of \surds = 319GeV with a total integrated luminosity of 333.7 pb-1 shared between two lepton beam charges and two longitudinal lepton polarisation modes. The differential...
Mrs
Nameeqa Firdous
(University of Innsbruck)
Poster
Experiment
We investigate different phenomenological models implemented in PYTHIA6 using data from ATLAS experiment to find best fit. These models include Multiple Parton Interactions model, different scenarios of Matter Overlap and Color Reconnection models as well as Lambda_QCD selection in alpha_s. We used three different parton density functions (PDFs) to study their effects on the selected...
Denis Rathjens
(Hamburg University (DE))
Poster
Jet reconstruction and calibration in the CMS experiment are complicated by the nonlinear response of the calorimeters and the high pileup conditions. These difficulties are mitigated at CMS by utilising the particle flow approach. The measurements of the jet energy calibration in CMS are summarized and presented. They are performed with data samples collected in proton-proton collisions at a...
Prof.
David Toback
(Texas A & M University (US)), Dr
Homer Wolfe
(Ohio State University (US)),
Jonathan Wilson
(University of Michigan)
We measure the asymmetry of the lepton in semileptonic ttbar decays in the full Run II sample of 9.4/fb. We develop a new technique to correct for the incomplete lepton acceptance and derive a parton-level asymmetry. The result of Afb(lep) = 0.094^{+0.032}_{-0.029} is approximately 2σ above the current Standard Model NLO prediction of Afb(lep) = 0.036.
Marta Calvi
(Universita & INFN, Milano-Bicocca (IT))
With a unique forward acceptance, and excellent vertexing and particle identification capability, LHCb is well-placed to make important contributions to heavy ion physics through measurements performed using data taken during pA and Ap collisions. The first studies of these data will be presented. These include measurements of particle multiplicity and studies of strange and charmed...
Andres Guillermo Delannoy Sotomayor
(Vanderbilt University (US))
Poster
Experiment
A search for physics beyond the standard model is performed with one or more hadronically decaying τ-leptons, highly energetic jets, and large momentum imbalance in the final state. The data sample corresponds to an integrated luminosity of 5.0 fb^(−1) of pp collisions at √s = 7 TeV collected with the CMS detector at the LHC.
Domenec Espriu
(University of Barcelona (ES))
WW scattering is dominated at high energies by their longitudinal components, which are the most sensitive to the nature of the electroweak symmetry breaking. Prior to the discovery at the
LHC of a Higgs-like particle, unitarization tools were extensively used to show that, in the absence of a light Higgs boson, new resonances resulting from the would-be strongly-interacting electroweak...
Marta Calvi
(Universita & INFN, Milano-Bicocca (IT))
The angle gamma of the CKM unitarity triangle remains the least precisely measured parameter of the CKM mixing matrix. The precision measurement of this parameter is one of the main goals of the LHCb experiment. We present a wide range of measurements of CP violation and partial rates in B->DK decays, as well as the latest LHCb measurement of gamma combining all the individual inputs.
Lee Sawyer
(Louisiana Tech University (US))
We present measurements of the differential cross section dsigma/dpT_gamma for the inclusive production of a photon in association with a b/c-quark jet. The results are based on data corresponding to an integrated luminosity of 8.7 fb^-1, recorded with the D0 detector at the Fermilab Tevatron ppbar collider at sqrt(s)=1.96 TeV. The measured cross sections are compared with next-to-leading...
Jiri Hejbal
(Acad. of Sciences of the Czech Rep. (CZ))
Poster
Experiment
A measurement of the W+W− production cross section in proton-proton collisions is presented. The W+W− leptonic decay channels are analysed using data collected by the ATLAS detector at the CERN Large Hadron Collider.
The results are first obtained in kinematic regions defined by the decay kinematics and then extrapolated to the full phase space. Comparisons to NLO QCD predictions are...
Sara Borroni
(Deutsches Elektronen-Synchrotron (DE))
Poster
Experiment
While in the Standard Model top quarks are predicted to be produced unpolarized at the LHC,
several models beyond the SM predict a nonzero
polarization. In particular, some of the models
predicting a larger forwardbackward
ttbar asymmetry than predicted in the SM, as measured at
the Tevatron, predict a positive top quark polarization. Using 4.7 fb1
of data collected by the ATLAS...
Pamela Ferrari
(NIKHEF (NL))
Higgs
Measurements of the mass, couplings and spin/CP properties of the recently
discovered Higgs boson in the di-boson (H->gammagamma, H->ZZ->4l, H->WW->lvlv) final states are presented.
Andrea Davide Benaglia
(Universita & INFN, Milano-Bicocca (IT))
CMS results are presented on the measurement of properties of the Higgs-like particle discovered last summer with a mass in the range of 125-126 GeV, based on the full statistics of about 25 fb-1, collected in 2011 and 2012 at 7 and 8 TeV respectively. A discussion will be given on the mass measurement, couplings and the spin-parity properties of this new particle. The most recent results will...
Abideh Jafari
(School of Particles and Accelerator Inst. for Res. in Fundam. S)
Measurements of several top-quark properties are presented, obtained from the CMS data collected in 2011 and 2012 at centre-of-mass energies of 7 and 8 TeV. The results include measurements of the top pair charge asymmetry, the W helicity in top decays, the top quark charge, and of the ttbar spin correlation and the search for anomalous couplings. The fraction of top quarks decaying into a...
Stefano Augusto Pozzorini
(Universitaet Zuerich (CH))
OpenLoops is a fast and flexible generator of one-loop scattering amplitudes, which allows to compute NLO corrections to many-particle processes within the Standard Model. Using OpenLoops in combination with Sherpa permits to prepare NLO simulations in a fully automated way. Matching and merging at NLO with the novel MEPS@NLO technique are also fully supported. As a first nontrivial...
Lara Lloret Iglesias
(Universidad de Oviedo (ES))
Poster
Experiment
We present the performance of missing transverse momentum (MET) reconstruction in CMS, using 8 TeV pp collision data corresponding to an integrated luminosity up to 12.2 ± 0.5 fb−1. Events with anomalous MET are studied, and the performance of algorithms used to identify those events is presented. The scale and resolution for MET, including the effects of multiple pp interactions in the same...
Simone Zimmermann
(Universitaet Bonn (DE))
Poster
Experiment
A search for long-lived, multi-charged particles has been performed using
the ATLAS detector.We have examined data taken during the 2011
LHC running, corresponding to an integrated luminosity of 4.4 fb−1.
A search was made for charged particle tracks exhibiting anomalously
high ionization consistent with stable massive particles with charges
from |q|=2e to |q|=6e. For this search new...
Lee Sawyer
(Louisiana Tech University (US))
Poster
Experiment
We present measurements of three different multi-jet cross section ratios. These include the very first measurements of the new quantities $R_{\DeltaR}$ and $R_{\Delta\phi}$, and a measurement of $R_{3/2}$. The variable $R_{\DeltaR}$ measures the average number of neighboring jets for jets from an inclusive jet sample. The variable $R_{\Delta\phi}$ measures the fraction of the inclusive dijet...
Mr
Andrii Tykhonov
(Institute Jozef Stefan, Ljubljana, Slovenia)
Poster
Theory
We consider the hadron-hadron inelastic scattering in the framework of QCD perturbation theory. It is shown that in QCD due to conservation of colour it is prohibitive to consider tree-level diagrams of inelastic scattering and one has to consider the diagrams with loops. We examine the simplest type of such diagrams, where the diagram can be split into blocks, so that the integration over...
Valery Lyuboshitz
(Joint Institute for Nuclear Research ( Dubna ))
Poster
Theory
The coherent inelastic processes of the type a –> b, which
may take place in the interaction of hadrons and \gamma quanta with
nuclei at very high energies ( the nucleus remains the same ), are
theoretically investigated. For taking into account the influence of
the nucleus matter, the optical model, based on the concept of
refraction index, is...
Chiara Bianchin
(University of Utrecht (NL))
The ALICE experiment studies the properties of the strongly-interacting matter created in high energy heavy-ion collisions. This state of deconfined matter, called Quark-Gluon Plasma (QGP), is predicted by Quantum Chromodynamics (QCD).
Heavy quarks are a powerful probe to investigate such a state of matter, since they are predominantly produced in hard scattering processes during the early...
Denis Rathjens
(Hamburg University (DE))
Poster
Experiment
We interpret within the phenomenological MSSM (pMSSM) results obtained by CMS using a pp data set collected in 2011 at 7~TeV, corresponding to an integrated luminosity of 5/fb. The pMSSM is a 19-parameter realization of the MSSM defined at the SUSY scale, that captures most of the features of the general R-parity conserving weak-scale MSSM. A global Bayesian analysis is performed that yields...
Valery Lyuboshitz
(Joint Institute for Nuclear Research ( Dubna ))
Poster
Theory
Spin correlations for the \Lambda \Lambda and
\Lambda \bar{\Lambda} pairs, generated in relativistic
heavy ion collisions, and related angular correlations at the
joint registration of hadronic decays of two hyperons, in which
space parity is not conserved, are analyzed. The correlation
tensor components can be derived from the double angular
...
Francesco Micheli
(Universita e INFN, Roma I (IT))
Poster
Experiment
We present here the results of the first search for the associated production of the Higgs boson with a $t \bart$ pair, using the events where the Higgs boson decays to two photons in CMS. In order to maximize acceptance and sensitivity to such a small signal, we device two different sets of event selection criteria, optimized for semileptonic and all-hadronic $t \bar t$ decays.
Michal Krelina
(Czech Technical University (CZ))
Poster
Theory
We study nuclear effects in production of large-p_{T} hadrons on nuclear targets at
different energies corresponding to RHIC and LHC experiments.
For calculations we employ the QCD improved parton model including the intrinsic parton transverse momenta and nuclear broadening. This model is firstly tested reproducing well the data on p_{T} spectra of hadrons produced in proton-proton and...
Lara Lloret Iglesias
(Universidad de Oviedo (ES))
We 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 WW, WZ, and ZZ production at the LHC. The results are interpreted in terms of constraints on anomalous triple gauge couplings.
Marta Calvi
(Universita & INFN, Milano-Bicocca (IT))
The latest years have seen a resurrection of interest in searches for exotic states motivated by tantalising observations by Belle and CDF. Using the data collected at pp collisions at 7 and 8 TeV by the LHCb experiment we present studies of the X(3872) properties as well as preliminary studies and prospects for studies of putative states such as the Z(4430)+
Sara Vanini
(Universita e INFN (IT))
Poster
Experiment
The study of rare processes allows the indirect search of new physics through the comparison with the standard model (SM) expectations. Flavor-changing neutral current decays of b hadrons are forbidden at tree level in the SM, resulting in small SM rates. These processes are therefore good candidates for the search of new physics, such as minimal supersymmetric extension of the standard model...
Marta Calvi
(Universita & INFN, Milano-Bicocca (IT))
Rare decays of beauty and charm hadrons and lepton flavour/number violating decays of tau leptons test the flavour structure of the underlying theory at the level of quantum corrections. They provide information on the couplings and masses of heavy virtual particles appearing as intermediate states. A review of recent results obtained by LHCb on these topics will be presented.
Nicolas Arbor
(Centre National de la Recherche Scientifique (FR))
Depending on their energy and their production mechanism, photons probe different properties of strongly interacting matter produced in heavy ions collisions. Neutral meson spectra, reconstructed via their two-photon decays, are considered to be sensitive to the medium transport. In addition to that, direct photons can be used to perform a tomography of the initial states of the collision. At...
Christopher John Meyer
(University of Chicago (US))
Poster
Experiment
The ATLAS collaboration has performed studies of a wide range of QCD phenomena.
Recent soft-QCD measurements include studies of underlying event, hadronic event shapes,
double parton scattering, diffraction and forward energy flow.
The internal structure of jets produced in proton-proton collisions at 7 TeV centre-of-mass
energy provides a direct test of QCD calculations of gluon and...
Maria Nicassio
(GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
Strange hadrons and resonances are among the most sensitive probes to investigate the characteristics of the system formed in heavy-ion collisions.
The ALICE Collaboration has measured strange hadrons and meson resonances decaying into (final) charged particles. Results on the production of $\phi$ and $K^{*0}$ resonances, $K^0_S$, $\Lambda$, $\Xi^-$ and $\Omega^-$ and their anti-particles...
Javier Montejo Berlingen
(IFAE - Barcelona (ES))
Poster
Experiment
Since the discovery of a Higgs-‐like boson by the ATLAS and CMS experiments at the LHC, the emphasis has shifted towards measurements of its properties in order to determine whether the new particle is the Standard Model (SM) Higgs boson, or something else. Of particular importance is top-‐Higgs Yukawa coupling...
Philipp David Eller
(Eidgenoessische Tech. Hochschule Zuerich (CH))
Poster
Experiment
After the discovery of a Higgs-like Boson with a mass close to 125 GeV at the LHC in summer 2012, we are showing the update on the analysis of the VH cannel. In this channel the Higgs-like Boson is produced in association with a vector boson and decaying into b-quarks. We present the updated results on the full 2011 and 2012 7+8 TeV dataset.
This poster will focus on one of the tree modes...
Donald Austin Belknap
(University of Wisconsin (US))
Poster
Experiment
The most recent CMS results are presented for a search for a Standard Model Higgs boson in the ZZ decay channel where the Z bosons decay into two charged leptons. The full dataset of LHC pp collisions at 7 and 8 TeV recorded by CMS is utilized.
Prof.
David Toback
(Texas A & M University (US)), Dr
Homer Wolfe
(Ohio State University (US)),
Jonathan Wilson
(University of Michigan)
We present a search for new particles in an extension to the standard model that includes a heavy Higgs boson (H0), a lighter charged Higgs boson (H±), and an even lighter Higgs boson h0, with decays leading to a W-boson pair and a bottom-antibottom quark pair in the final state. We use events with exactly one lepton, missing transverse momentum, and at least four jets in data corresponding to...
Ta-Wei Wang
(National Taiwan University (TW))
Poster
Experiment
We perform a search for a pair-produced–excited top quark, t* , that decays exclusively to a top quark and a gluon using data collected by the CMS detector from pp collisions at ps = 8 TeV. The search is performed using events consistent with the semi-leptonic decay of the t*t* system, that is events having a single isolated muon or electron, missing energy, and at least six well-reconstructed...
Kilian Rosbach
(Universite de Geneve (CH))
Poster
Experiment
The poster presents latest results of the search for top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in sqrt{s}=8 TeV pp collisions using L=21 fb-1 of ATLAS data. Two top squark decay scenarios are considered: (a) to a top quark and a long-lived undetected neutral particle (LSP), (b) to a bottom quark and a chargino, where the...
Sara Vanini
(Universita e INFN (IT))
Poster
Experiment
A search is presented in proton-proton collisions at7 TeV for fermionic triplet states expected in type III seesaw models. The search is performed using final states with three isolated charged leptons and an imbalance in transverse momentum. The data, collected with the CMS detector at the LHC, correspond to an integrated luminosity of 4.9 /fb No excess of events is observed above the...
John Stupak
(Purdue University Calumet (US))
We present searches for heavy resonances, such as the Z', W', or leptoquarks, in final states with leptons.
James Christopher Coggeshall
(Univ. Illinois at Urbana-Champaign (US))
Poster
Experiment
The ATLAS detector is used to search for heavy neutral gauge bosons (Z′) decaying to an electron-positron pair or a muon-antimuon pair. Results are presented based on the analysis of pp collisions at a center-of-mass energy of 8 TeV corresponding to an integrated luminosity of approximately 20 fb−1. A Z′ with Standard Model Z couplings to fermions is excluded at 95\% C.L. for masses below 2.79...
Mr
Valerio Rossetti
(Universitat Autònoma de Barcelona (ES))
Poster
Experiment
We present results by the ATLAS experiment on a search for new phenomena in pp collision events with one high momentum jet and large missing transverse energy. The data are compared to the SM predictions, dominated by the irreducible background from W/Z+jets production with neutrinos and mis-identified electrons and muons in the final state. The results are interpreted in the context of...
Yeng-Ming Tzeng
(National Taiwan University (TW))
We present searches for massive top and bottom quark partners at CMS using data collected at sqrt(s)=7 and 8 TeV. Such partners can be seen in 4th generation models, or can be found in models predicting vector-like quarks to solve the Hierarchy problem and stabilize the Higgs mass. Other searches focus on excited states of composite heavy objects that decay to top quarks and jets. The searches...
Marc Dunser
(Eidgenoessische Tech. Hochschule Zuerich (CH))
Poster
Although same sign dileptons final states are very rare in the SM context, they appear naturally in many different new physics scenarios such as SUSY where two same-sign dileptons can be produced in the decay chain of supersymetric particles.
Different scenarios can be presented: Same-sign dileptons accompanied by b-quarks can arise from SUSY processes where 3rd generation quark...
Antonella Succurro
(Universitat Autònoma de Barcelona (ES))
Poster
Experiment
The high energy frontier opened by the LHC is allowing us
to explore physics scenarios where new physics might lay.
The need to go beyond the Standard Model (SM) comes from
various unanswered questions, like where does the matter-antimatter
asymmetry comes from? What is the nature of Dark Matter?
How can the hierarchy problem be solved?
The recent discovery of an Higgs-like
boson...
Prof.
David Toback
(Texas A & M University (US)), Dr
Homer Wolfe
(Ohio State University (US)),
Jonathan Wilson
(University of Michigan)
We report the most sensitive search to date for forbidden and exotic decays of the Z boson to a pair of photons, a pair of neutral mesons, or a neutral meson and a photon. The search is using the full CDF dataset corresponding to 10.0/fb of integrated luminosity. The two decay products are reconstructed in the electromagnetic calorimeter, spanning a rapidity range of |η| < 1.1, and their...
Merlin Davies
(Universite de Montreal (CA))
Poster
Experiment
Although recent LHC results are compatible with an electroweak symmetry breaking through the Standard Model Higgs mechanism, the inherent implausible fine-tuning it requires suggests new phenomena must exist at or beyond energies of O(1) TeV. In this perspective, diboson resonances would be key signatures in understanding the structures beyond the Standard Model. With 13 fb-1 of ATLAS recorded...
Dr
Fedor Ratnikov
(KIT - Karlsruhe Institute of Technology (DE))
In this talk, the latest results from CMS on RP violating Supersymmetry are reviewed. We present results using up to 20/fb of data from the 8 TeV LHC run of 2012. Interpretations of the experimental results in terms of production of squarks, gluinos, charginos, neutralinos, and sleptons within RP violating susy models are presented.
Conrad Friedrich
(Deutsches Elektronen-Synchrotron (DE))
Poster
Experiment
In the Standard Model (SM) transitions between top quarks and other quark flavours mediated by neutral gauge bosons, socalled
Flavour Changing Neutral Currents (FCNC), are forbidden at
tree level and highly suppressed at higher orders due to the GlashowIliopoulosMaiani
(GIM) mechanism. However, there exist several new physics models, which significantly enhance rates of FCNC processes...
Silvio Donato
(Sezione di Pisa (IT))
Poster
Experiment
A search for the standard model Higgs boson decaying into two b-jets using associated production of the Higgs with Z boson decaying into invisible channel is presented. The CMS data sample of 4.7 fb-1 of pp collisions at the energy of 7 TeV and 19.5 fb-1 at the energy of 8 TeV have been analyzed. The techniques used in order to discriminate signal from background are explained.
Geert Jan Besjes
(Radboud University Nijmegen (NL))
Poster
Experiment
A search for squarks and gluinos in final states containing jets, missing transverse momentum and no high-pt electrons or muons is presented. The data were recorded in 2012 by the ATLAS experiment in sqrt(s)=8 TeV proton-proton collisions at the Large Hadron Collider, with a total integrated luminosity of 20 fb−1.
Verena Ingrid Martinez Outschoorn
(Fermi National Accelerator Lab. (US))
In this talk, the latest results from CMS on stop pair production are reviewed. We present searches preformed for different stop decay modes using up to 20/fb of data from the 8 TeV LHC run of 2012.
Basil Schneider
(Universitaet Bern (CH))
Poster
Experiment
This poster presents results of a search for supersymmetry in events with three leptons and missing transverse momentum. The analysis uses a sample corresponding to 21 fb-1 of proton-proton collision data delivered by
the LHC at sqrt(s) = 8 TeV and recorded by the ATLAS detector. Results are interpreted in phenomenological minimal supersymmetric and simplified models.
Yuichi Sasaki
(University of Tokyo (JP))
Poster
Experiment
This poster presents a new inclusive search for supersymmetry (SUSY) by the ATLAS experiment at the LHC in proton-proton collisions at a center-of-mass energy sqrt(s) = 8 TeV in final states with jets, missing transverse momentum and one isolated electron or muon. The search is based on data from the early 2012 data-taking period, corresponding to an integrated luminosity of 5.8 fb-1. A...
Joseph David Price
(University of Liverpool (GB))
Poster
Experiment
Searches for rare decay modes (e.g. Zγ or μμ) of the recently discovered Higgs boson with a mass of approximately 125 GeV are presented. The results of searches for invisible decays of the Higgs boson are also discussed.
Kevin Michael Mercurio
(Harvard University (US))
Poster
Experiment
With the observation of a new particle of mass 125 GeV decaying to a pair of photons, W bosons or Z bosons, the current critical question in the field of particle physics is whether this particle is the Standard Model Higgs boson or something else. Observing the decay of the new particle to fermions and...
Benjamin Dechenaux
(Centre National de la Recherche Scientifique (FR))
Poster
Experiment
The search for ttbar resonances that could be produced at the CERN Large Hadron Collider allow the investigation of a wide range of physics beyond the Standard Model. In such a scheme, the top quark is often produced with a transverse momentum that is large as compared to its mass. The decay of such highly boosted top leads to a topology that differs in several respects from that encountered...
Christian Jorg Rudolph
(Technische Universitaet Dresden (DE))
Poster
Experiment
The Higgs-like boson discovered by the ATLAS and CMS collaborations is a candidate for the last unobserved particle predicted by the Standard Model (SM). The next experimental step is the measurement of its properties, most notably its couplings to fermions. This contribution will present a search for the SM...
Federica Primavera
(Universita e INFN (IT))
Results are presented from CMS on searches for Higgs-like particles in models beyond the Standard Model and searches for rare or exotic decays of the 125 GeV particle. Light Higgses as predicted in the NMSSM models are searched for. Decays of the 125 GeV Higgs-like particle into muons are explored. The most recent results will be presented.
Marta Calvi
(Universita & INFN, Milano-Bicocca (IT))
Higgs
The LHCb detector is a forward single arm spectrometer designed primarily for the study of CP-violation and other rare phenomena in the decays of beauty and charm particles. LHCb is very powerful in probing New Physics by performing indirect searches. Nevertheless, a program of direct searches for Higgs and Higgs-like particles also exists. Here we present some recent results and perspectives.
Livia Soffi
(Universita e INFN, Roma I (IT))
We present searches for long-lived particles at CMS. These include long-lived gluinos, fractionally and multiply charged particles, and displaced particles that decay into leptons, photons, or jets.
Christian Boser
(KIT - Karlsruhe Institute of Technology (DE))
Poster
Experiment
The most important discovery of the LHC so far was the discovery of the Higgs-like boson at 125 GeV in 2012. We present the most recent results of the search for the Higgs-like boson decaying into bottom quarks, when produced in association with a W boson. Only events where the leptonically decaying W boson and the Higgs boson possess large transverse momenta are selected. The full...
Prof.
Gennady Lykasov
(Joint Instirute for Nuclear Research, Dubna, Russia),
Mark Stockton
(McGill University (CA)), Mr
Mikhail Demichev
(Joint Institute for Nuclear Research, Duna, Russia),
Tzvetalina Stavreva
(LPSC)
Poster
Theory
Searching for the intrinsic heavy quark component in the proton suggested in [1]
was proposed recently in the forward charmed meson production in pp collisions
at the LHC [2]. We extend this study to the inclusive LHC pp-production of c(b)-
jets accompanied by photons. It is stimulated by the DØ and CDF results for the
production of prompt photons and c(b)-jets in p¯p collisions at the...
Lara Lloret Iglesias
(Universidad de Oviedo (ES))
Poster
The search of the standard model Higgs boson in the H→WW→2l2ν channel with the CMS detector is described. This analysis is performed in categories, depending of the number of jets and the leptons flavour, in order to enhance the Higgs signal respect to the expected irreducible backgrounds. The largest backgrounds are estimated with data- driven methods. In some categories a fit with a 2D...
Marta Calvi
(Universita & INFN, Milano-Bicocca (IT))
Decays of B hadrons without charmed particles in the final state offer rich opportunities to test the Standard Model. For example, CP violation in charmless charged two-body and three-body B decays provides ways to measure the CKM angle gamma and to search for New Physics. The angular distributions of decays to vector-vector final states provide additional interesting observables. We present...
Marta Calvi
(Universita & INFN, Milano-Bicocca (IT))
Due to its unique pseudorapidity coverage and the possibility of extending measurements to low transverse momenta, LHCb provides important input to the understanding of particle production in a kinematical range where QCD models have large uncertainties. Measurements of charged, strange and charmed particle production and energy flow are performed in the approximate pseudorapidity range...
enrico bertuzzo
(CEA Saclay)
After a brief summary of the 8 TeV LHC results for direct searches of SUSY particles, I will analyse their implications in the context of various supersymmetric scenarios, including both minimal and non minimal models.
Marc Dunser
(Eidgenoessische Tech. Hochschule Zuerich (CH))
In this talk, the latest results from CMS on searches for EWK production of Gauginos and Sleptons, in a variety of complementary final state signatures and methods, will be presented using up to 20/fb of data from the 8 TeV LHC run of 2012.
Prof.
David Toback
(Texas A & M University (US)), Dr
Homer Wolfe
(Ohio State University (US)),
Jonathan Wilson
(University of Michigan)
We summarize the top-quark mass measurements from the CDF and D0 experiments at Fermilab. We combine published Run I (1992--1996) measurements with the most precise published and preliminary Run II (2001--2012) measurements using a data set corresponding to up to 8.7/fb of ppbar collisions. Taking uncertainty correlations into account, and adding in quadrature the statistical and systematic...
Mr
Daniele Barducci
(University of Southampton / NExT Institute)
Poster
Theory
General Composite Higgs models provide an elegant solution to the hierarchy problem present in the Standard Model (SM)
and give an alternative pattern leading to the mechanism of electroweak symmetry breaking (EWSB).
We present a recently proposed realistic realization of this general idea analyzing in detail the Higgs production and decay modes.
Comparing them with the latest Large...
Joel Alexander Klinger
(University of Manchester (GB))
Poster
Experiment
Events with muons in the final state are an important signature for many physics topics at the Large Hadron Collider (LHC), for instance searches for muonic Higgs boson decays or new phenomena, or measurements of the standard model (SM) processes like top-quark, W-boson, and Z-boson production. The use of efficient trigger muon selections during data taking and a good understanding of their...
Christopher John Meyer
(University of Chicago (US))
Poster
Experiment
The Tile Calorimeter (TileCal) is the central section of the ATLAS hadronic calorimeter at the Large Hadron Collider. Scintillation light produced in the tiles is transmitted by wavelength shifting fibers to photomultiplier tubes (PMTs). The resulting electronic signals from approximately 10000 PMTs are measured and digitized before being transferred to off-detector data-acquisition systems....
Elisabetta Pianori
(University of Warwick (UK))
Poster
Experiment
During the data-taking period from 2009 until 2012, the ATLAS trigger has been used very successfully to collect proton‐proton data at LHC center‐of‐mass energies between 900 GeV and 8 TeV. The three‐level trigger system reduces the event rate from the design bunch‐crossing rate of 40 MHz to an average recording rate of about 300 Hz. Using custom electronics with input from the calorimeter and...
Dr
Antonio Maria Perez Calero Yzquierdo
(Centro de Investigaciones Energ. Medioambientales y Tecn. - (ES),
Jose Flix Molina
(Centro de Investigaciones Energ. Medioambientales y Tecn. - (ES)
Poster
Experiment
The Large Hadron Collider (LHC), in the European Laboratory for Particle Physics (CERN, Switzerland), is the largest scientific instrument ever built. It started operating in November 2009 and it has generated a few hundreds of Petabytes of raw, simulated and processed data, from all of its detectors, since the stop of the successful first run in February 2013. Managing this amount of data and...
Jorge Casalderrey Solana
(University of Barcelona (ES))
When high energy jets propagate through a hadronic medium, several of their partonic fragments interact simultaneously with the system. The ability of the medium to tell apart different fragments depends on a medium resolution scale, which is a property of the system. In this talk I discuss how this scale emerges from the breaking of color coherence among the different jet fragments induced by...
Juan Antonio Aguilar-Saavedra
(University of Granada)
Current limits on the mixing of the top quark with heavy partners are presented, drawing their implications for top anomalous couplings and for single production of top partners at LHC.
Caterina Vernieri
(Sezione di Pisa (IT))
Poster
Experiment
The WZ/ZZ (VZ) associated production channel with Z decaying to bottom quarks, is one of the less reducible background for the standard model Higgs boson search in the same event topology (VH).
The study of the VZ signal proposed here should be accounted as a validation of the analysis strategy developed for the VH search in the boosted regime. It is also the first attempt to measure the VZ...
Mikael Rodríguez Chala
(Universidad de Granada)
Top and Bottom partners, predicted by Composite Higgs Models, can be singly produced through the decay of new octet resonances (heavy gluons), which are naturally present in these models whenever partial compositeness is considered. We study in detail this new production mechanism in the Ht\bar{t}, Zb\bar{b} and Hb\bar{b} channels at the LHC in a wide region of the parameter space. The sizably...
Hamed Bakhshiansohi
(School of Particles and Accelerator Inst. for Res. in Fundam. S)
Measurements of the top quark mass are presented, obtained from CMS data collected in 2011 and 2012 at a centre-of-mass energy of 7 TeV and 8 TeV. The mass of the top quark is measured using several methods. The results of the various channels are combined and compared to the world average. The dependence of the top-quark mass measurement on event kinematics is studied. The top mass and also...
Adrian Irles Quiles
(Universidad de Valencia (ES))
This work presents a new method to measure the top-quark mass
in hadronic collisions. The method uses the
sensitivity of the ttbar+1Jet production on the top-quark mass. In detail we study the R distribution defined as the
ttbar+1Jet normalized differential cross section in the invariant mass
of the total system and calculated at NLO accuracy. We prove that the \R distribution
has a...
Mrs
Nameeqa Firdous
(University of Innsbruck)
Poster
Experiment
In this work, new tunings of the PYTHIA6 Monte Carlo event generator using Minimum Bias(MB) and Underlying Event (UE) data published by the ATLAS Collaboration are presented.
Altogether six parameters are varied: four parameters of the Multiple Parton Interaction model and two Lambda_QCD parameters. The fragmentation parameters are taken from tunes to ALEPH e+e- Z peak data.
It is shown...
Fernando Carrio Argos
(Universidad de Valencia (ES))
Poster
Experiment
The Tile Calorimeter (TileCal) is the hadronic calorimeter covering the most central region of the ATLAS experiment at LHC. The TileCal readout consists of about 10000 channels. Its main upgrade will occur for the High Luminosity LHC phase (phase 2) where the luminosity will have increased 5-fold compared to the design luminosity (1034 cm−2s−1) but with maintained energy (i.e. 7+7 TeV). An...
Dr
Ignasi Rosell
(Universidad CEU Cardenal Herrera & IFIC, Valencia)
We present a one-loop calculation of the oblique S and T parameters within strongly-coupled models of electroweak symmetry breaking with a light Higgs-like boson. We use a general effective Lagrangian, implementing the chiral symmetry breaking SU(2)_L⊗SU(2)_R → SU(2)L+R with Goldstones, gauge bosons, the Higgs-like scalar and one multiplet of vector and axial-vector massive resonance states....
Francesco Romeo
(Universita e INFN (IT))
We 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.
