Searches for supersymmetry using the MT2 variable in hadronic events produced in pp collisions at 8 TeV

Abstract

Searches for supersymmetry (SUSY) are performed using a sample of hadronic events produced in 8 TeV pp collisions at the CERN LHC. The searches are based on the MT2 variable, which is a measure of the transverse momentum imbalance in an event. The data were collected with the CMS detector and correspond to an integrated luminosity of 19.5 inverse femtobarns. Two related searches are performed. The first is an inclusive search based on signal regions defined by the value of the MT2 variable, the hadronic energy in the event, the jet multiplicity, and the number of jets identified as originating from bottom quarks. The second is a search for a mass peak corresponding to a Higgs boson decaying to a bottom quark-antiquark pair, where the Higgs boson is produced as a decay product of a SUSY particle. For both searches, the principal backgrounds are evaluated with data control samples. No significant excess over the expected number of background events is observed, and exclusion limits on various SUSY models are derived.

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References in corpus (57)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The anti-k_t jet clustering algorithm
• Parton distributions for the LHC
• Asymptotic formulae for likelihood-based tests of new physics
• MadGraph 5 : Going Beyond
• New parton distributions for collider physics
• A Supersymmetry Primer
• Confidence Level Computation for Combining Searches with Small Statistics
• Pileup subtraction using jet areas
• SOFTSUSY: a program for calculating supersymmetric spectra
• Measuring masses of semi-invisibly decaying particles pair produced at hadron colliders
• Single-top Wt-channel production matched with parton showers using the POWHEG method
• Determination of Jet Energy Calibration and Transverse Momentum Resolution in CMS
• The Catchment Area of Jets
• Electroweak gauge boson production at hadron colliders through O(alpha_s^2)
• Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV
• Study of Constrained Minimal Supersymmetry
• Identification of b-quark jets with the CMS experiment
• The PDF4LHC Working Group Interim Recommendations
• Simplified Models for LHC New Physics Searches
• A first unbiased global NLO determination of parton distributions and their uncertainties
• Threshold resummation for squark-antisquark and gluino-pair production at the LHC
• Squark and gluino hadroproduction
• Soft gluon resummation for the production of gluino-gluino and squark-antisquark pairs at the LHC
• Soft-gluon resummation for squark and gluino hadroproduction
• SDECAY: a Fortran code for the decays of the supersymmetric particles in the MSSM
• Search for direct production of charginos, neutralinos and sleptons in final states with two leptons and missing transverse momentum in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector
• Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states
• Measurement of the Inclusive W and Z Production Cross Sections in pp Collisions at sqrt(s) = 7 TeV
• Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using $\sqrt{s}=8$ TeV proton--proton collision data
• Search for top-squark pair production in the single-lepton final state in pp collisions at sqrt(s) = 8 TeV
• Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at sqrt(s) = 8 TeV
• The PDF4LHC Working Group Interim Report
• Next-to-next-to-leading soft-gluon corrections for the top quark cross section and transverse momentum distribution
• Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in sqrt(s) = 8TeV pp collisions with the ATLAS detector
• Missing transverse energy performance of the CMS detector
• 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 with the ATLAS detector
• Search for supersymmetry in hadronic final states with missing transverse energy using the variables AlphaT and b-quark multiplicity in pp collisions at 8 TeV
• Supersymmetry production cross sections in pp collisions at sqrt{s} = 7 TeV
• Performance of tau-lepton reconstruction and identification in CMS
• Search for direct top-squark pair production in final states with two leptons in pp collisions at sqrt(s)=8TeV with the ATLAS detector
• First Measurement of the Cross Section for Top-Quark Pair Production in Proton-Proton Collisions at sqrt(s)=7 TeV
• Search for new phenomena in final states with large jet multiplicities and missing transverse momentum at sqrt(s)=8 TeV proton-proton collisions using the ATLAS experiment
• Search for supersymmetry in hadronic final states using MT2 in pp collisions at sqrt(s) = 7 TeV
• Searches for electroweak neutralino and chargino production in channels with Higgs, Z, and W bosons in pp collisions at 8 TeV
• Search for gluino mediated bottom- and top-squark production in multijet final states in pp collisions at 8 TeV
• Anatomy of maximal stop mixing in the MSSM
• Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC
• Search for the direct production of charginos, neutralinos and staus in final states with at least two hadronically decaying taus and missing transverse momentum in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Search for direct slepton and gaugino production in final states with two leptons and missing transverse momentum with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV
• Measurement of masses in the t t-bar system by kinematic endpoints in pp collisions at sqrt(s) = 7 TeV
• Measurement of the top quark mass in the dilepton channel
• Top Quark Mass Measurement using mT2 in the Dilepton Channel at CDF
• Using gamma+jets Production to Calibrate the Standard Model Z(nunu)+jets Background to New Physics Processes at the LHC

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• Searching for heavy Higgs in supersymmetric final states at the LHC
• Supersymmetry: Aspirations and Prospects
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