Search for direct top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in sqrt(s) = 7 TeV pp collisions using 4.7 fb-1 of ATLAS data

Abstract

A search is presented for direct top squark pair production in final states with one isolated electron or muon, jets, and missing transverse momentum in proton-proton collisions at sqrt(s) = 7 TeV. The measurement is based on 4.7 fb-1 of data collected with the ATLAS detector at the LHC. Each top squark is assumed to decay to a top quark and the lightest supersymmetric particle (LSP). The data are found to be consistent with Standard Model expectations. Top squark masses between 230 GeV and 440 GeV are excluded with 95% confidence for massless LSPs, and top squark masses around 400 GeV are excluded for LSP masses up to 125 GeV.

arXiv comment6 pages plus author list (20 pages total), 2 figures, 2 tables, submitted to Physical Review Letters. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2012-06/

References in corpus (48)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The anti-k_t jet clustering algorithm
• Parton distributions for the LHC
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
• A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• New parton distributions for collider physics
• Herwig++ Physics and Manual
• HERWIG 6.5: an event generator for Hadron Emission Reactions With Interfering Gluons (including supersymmetric processes)
• ALPGEN, a generator for hard multiparton processes in hadronic collisions
• The ATLAS Simulation Infrastructure
• MadGraph/MadEvent v4: The New Web Generation
• An update on vector boson pair production at hadron colliders
• Vector boson pair production at the LHC
• Two-loop soft anomalous dimensions for single top quark associated production with a W- or H-
• -- HATHOR -- HAdronic Top and Heavy quarks crOss section calculatoR
• Single-top hadroproduction in association with a W boson
• Characterizing Complex Particle Morphologies Through Shape Matching: Descriptors, Applications, and Algorithms
• Convergence to equilibrium in Wasserstein distance for Fokker-Planck equations
• Geometrically-Frustrated Pseudogap Phase of Coulomb Liquids
• Statistical Methods for Estimating Complexity from Competition Experiments between Two Populations
• Counting loopy graphs with given degrees
• Is Cen A surrounded by tens EeV Multiplet?
• How to model marine reserves ?
• Efficient Solution to the 3D Problem of Automatic Wall Paintings Reassembly
• Equiangular Tight Frames from Paley Tournaments
• FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order
• Next-to-next-to-leading-order collinear and soft gluon corrections for t-channel single top quark production
• Multiparton Interactions in Photoproduction at HERA
• NNLL resummation for s-channel single top quark production
• Stop Production at Hadron Colliders
• Electron performance measurements with the ATLAS detector using the 2010 LHC proton-proton collision data
• Squark and gluino hadroproduction
• One-Loop Analysis of the Electroweak Breaking in Supersymmetric Models and the Fine-Tuning Problems
• Supersymmetric top and bottom squark production at hadron colliders
• Single-top production in MC@NLO
• Measurement of ttbar production with a veto on additional central jet activity in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
• Search for new physics in events with same-sign dileptons and b-tagged jets in pp collisions at sqrt(s) = 7 TeV
• Hunt for new phenomena using large jet multiplicities and missing transverse momentum with ATLAS in 4.7 fb^-1 of sqrt(s) = 7 TeV proton-proton collisions
• Search for supersymmetry in final states with jets, missing transverse momentum and one isolated lepton in sqrt{s} = 7 TeV pp collisions using 1 fb-1 of ATLAS data
• Search for supersymmetry in pp collisions at sqrt(s) = 7 TeV in final states with missing transverse momentum and b-jets with the ATLAS detector
• Search for gluinos in events with two same-sign leptons, jets and missing transverse momentum with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV
• Search for Supersymmetry in Events with b Jets and Missing Transverse Momentum at the LHC
• Studies of the performance of the ATLAS detector using cosmic-ray muons
• Search for Pair Production of Supersymmetric Top Quarks in Dilepton Events from $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV
• Search for the lightest scalar top quark in events with two leptons in ppbar collisions at sqrt(s)=1.96 TeV

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