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Giorgio Bellettini (University and INFN, Pisa)18/04/2011, 09:00
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Richard Wigmans (Texas Tech University)18/04/2011, 09:10It is well known that non-compensating calorimeters, such as the ones used in the general purpose experiments at the Tevatron and the LHC, offer particular problems for correctly reconstructing the energy deposited by single hadrons and jets. In this talk, I will review these problems, discuss the remedies usually employed, and offer possible alternatives.Go to contribution page
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Gregory Soyez (CEA Saclay)18/04/2011, 09:55In the talk I will cover recent aspects of jet reconstruction at the LHC. As an introduction I will start by addressing the need for a robust set of jet definitions and the progress that has been achieved in that direction over the last years. Then I will discuss various techniques, built on that robust set of jet definitions, that have been developed to improve jet reconstruction. In...Go to contribution page
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Peter Loch (University of Arizona)18/04/2011, 11:10The ATLAS experiment at the Large Hadron Collider (LHC) features a multi-purpose detector system with nearly complete coverage of the solid angle around the proton-proton or heavy ion collisions. It collected nearly 40/pb of proton data in 2010, and resumed data taking in early Spring 2011. In this talk all aspects of jet physics, starting from jet reconstruction and calibration from the...Go to contribution page
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Roberto Tenchini (University of Pisa)18/04/2011, 11:55The performance of the Compact Muon Solenoid detector during the operation of the Large Hadron Collider with pp and HI collisions in 2010 will be reviewed. Selected results with emphasis on physics with jets will be presented, with an outlook to the 2011 data taking.Go to contribution page
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Alberto Annovi (Istituto Nazionale Fisica Nucleare (INFN) - Laboratori Nazionali di Frascati)18/04/2011, 14:00
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Hartmut Stadie (Universität Hamburg)18/04/2011, 14:30We present a summary of jet reconstruction and measurements of jet performance at CMS from the 2010 run. Examples of jet commissioning, and measurements of jet energy corrections and jet resolution along with their systematic uncertainty are shown. We also present studies of tagging boosted top quarks and W bosons using specialized jet algorithms.Go to contribution page
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Doug Schouten (Simon Fraser University (SFU))18/04/2011, 14:55Hadron jets are the most commonly observed objects in p-p collisions at the Large Hadron Collider at CERN. Because of this, they are part of the final state of almost any process, and are an important probe in searches for extensions of the Standard Model. A precise knowledge of the energy calibration for jets is difficult to ascertain for a number of reasons, and is a necessary ingredient...Go to contribution page
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Gianluca Petrillo (University of Rochester)18/04/2011, 15:20
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Francesc Vives Vaque (Inst. de Fisica de Altas Energias (IFAE))18/04/2011, 16:10The inclusive jet cross section has been measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using the ATLAS detector at the LHC. The full 2010 dataset has been used, consisting of a total integrated luminosity of 37 pb-1 . The anti-kt algorithm is used to identify jets with two jet radius parameters, R = 0.4 and R = 0.6. Jet shapes measurements are performed to validate...Go to contribution page
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Zinonas Zinonos ((University and INFN, Pisa))18/04/2011, 16:35Inclusive multi-jet production is studied using the ATLAS detector for pp collisions with a center-of-mass of 7 TeV. The data sample corresponds to an integrated luminosity of 2.43 pb-1, using the first pp data collected by the ATLAS detector in 2010. Results on multi-jet cross sections and angular distributions are presented and compared to both LO plus parton-shower Monte Carlo predictions...Go to contribution page
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Konstantinos Kousouris (Fermilab)18/04/2011, 17:00Various jet measurements based on the 2010 data collected by the CMS experiment at a center-of-mass energy of 7 TeV are presented. Results from inclusive jet cross-sections, dijet mass spectra, dijet angular distributions, hadronic event shapes and the ratio of the 3 jet to 2 jet production cross-sections will be illustrated.Go to contribution page
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Daniel Duggan (Rutgers University)18/04/2011, 17:30We discuss the results of searches for various new physics phenomena with jets from the pp collisions at 7 TeV delivered by LHC and collected with the CMS detector in 2010. Final states with di-jets, multi-jets, jets+MET and jets+leptons are explored. In in many cases the searches set the most stringent limits on possible new physics phenomena.Go to contribution page
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Belen Salvachua (ANL)18/04/2011, 17:55We present the latest results of searches for new physics beyond the Standard Model with jets in the final state using the ATLAS detector. These analysis are performed with the full LHC 2010 data from proton-proton collisions at center-of-mass energy of 7TeV. The results are based on the integrated luminosity between 33 to 37 pb-1 depending on the analysis. No significant discrepancy is found...Go to contribution page
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Raffaele Tito D'Agnolo (Scuola Normale Superiore and INFN, Pisa)18/04/2011, 18:20
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George Velev (FNAL)19/04/2011, 09:00Top quark physics is one of the most important successes of the concluding Tevatron program. In this talk, a summary of the most recent measurements of top quark properties, including the mass and its Winter 2011 average, will be presented. Some common techniques and discussion of major systematic uncertainties for top measurements will also be presented. Furthermore, the possibility to...Go to contribution page
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Andrea Neusiedl (University of Mainz)19/04/2011, 09:40The top-quark mass is a fundamental parameter of the Standard Model. After the discovery of the top quark, the measurements of its properties were of substantial interest. Within the framework of the SM, the top-quark mass can be used in combination with other electroweak precision measurements to constrain the mass of the yet unobserved Higgs boson. In the new era of the Large Hadron...Go to contribution page
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Roberto Chierici (CNRS/IPNL)19/04/2011, 10:05We present measurements of the top quark mass and of the ttbar invariant mass using the 2010 data collected by the CMS detector in pp collisions at a center-of-mass energy of 7TeV, amounting to a total integrated luminosity of 36 pb-1.Go to contribution page
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Thomas Gadfort (BNL)19/04/2011, 10:50Use of the jet-mass variable can significantly improve the reach of searches for high-mass diboson resonances. Traditional searches for this process have focused on the purely leptonic final state to reduce contamination from the large QCD jet background. We show that the significance to diboson resonances can be enhanced when considering events with one or two leptons and at least one...Go to contribution page
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Massimo Nespolo (University and INFN, Padova)19/04/2011, 11:15We present a study of jet production in association with W and Z bosons in proton-proton collisions at ECM=7 TeV using the full 2010 data set collected by CMS corresponding to an integrated luminosity of 36+-4 pb-1. The production of vector bosons with jets provides a stringent and important test of perturbative QCD calculations, and is an important background in searches for new physics and...Go to contribution page
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Alexandru Rusu (Fermilab)19/04/2011, 11:40A benchmark for Higgs discovery at the Tevatron is the diboson production in hadronic final states. Before every finding of the Higgs we have to show that we can re-discover this known Standard Model process. The same set of techniques used for Higgs can be tried on dibosons to see their effectiveness: jet reconstruction algorythms, b tagging methods, background reduction methods etc. I will...Go to contribution page
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Marco Trovato (INFN, Pisa)19/04/2011, 12:05Studying diboson associated production in a final state with a lepton, neutrino, and bb-pair is important since the event topology of this process is the same as expected for associated production of a W and a Standard Model light-Higgs boson. Thus, we consider the search for Diboson production as a preliminary step towards the Higgs discovery. Here we present a search for WW/WZ in events with...Go to contribution page
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Jonatan Piedra (IFCA)19/04/2011, 12:25A review of CMS Higgs Boson searches with discovery and exclusion prospects for the coming LHC data is given. Measurements of related electroweak (di-)boson productions are also presented.Go to contribution page
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Riccardo Barbieri (Scuola Normale Superiore, Pisa)19/04/2011, 14:30I make some remarks about using jets to search for new physics at hadron colliders.Go to contribution page
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Paolo Francavilla (University and INFN, Pisa)19/04/2011, 15:15In the last couple of years important progresses in the simulation of the QCD high pT processes have been carried out. In this talk, a review of the tools and techniques historically used to simulate QCD cross sections will be presented from a user point of view. The benchmark process selected for the discussion is the inclusive jet cross section. The talk will focus on the uncertainties of...Go to contribution page
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Paolo Lodone (Scuola Normale Superiore, Pisa)19/04/2011, 15:45We will discuss the new dominant bounds that can be derived on the coefficient of the effective operator generated by tree-level graviton exchange in large extra dimensions from pp -> jj data at LHC: M_T > 2.1TeV (ATLAS after 3.1/pb of integrated luminosity), M_T > 3.4 TeV (CMS after 36/pb). We clarify the role of on-shell graviton exchange and compare the full graviton amplitude to data,...Go to contribution page
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Chiara Roda (University and INFN, Pisa)19/04/2011, 16:40
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19/04/2011, 17:20
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