Search for heavy bottom-like quarks in 4.9 inverse femtobarns of pp collisions at sqrt(s) = 7 TeV

Abstract

Results are presented from a search for heavy bottom-like quarks, pair-produced in pp collisions at sqrt(s) = 7 TeV, undertaken with the CMS experiment at the LHC. The b' quarks are assumed to decay exclusively to tW. The b' anti-b' to t W(+) anti-t W(-) process can be identified by its distinctive signatures of three leptons or two leptons of same charge, and at least one b-quark jet. Using a data sample corresponding to an integrated luminosity of 4.9 inverse femtobarns, observed events are compared to the standard model background predictions, and the existence of b' quarks having masses below 611 GeV is excluded at 95% confidence level.

arXiv commentSubmitted to JHEP

References in corpus (34)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The anti-k_t jet clustering algorithm
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• MadEvent: Automatic Event Generation with MadGraph
• 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
• Determination of Jet Energy Calibration and Transverse Momentum Resolution in CMS
• MCFM for the Tevatron and the LHC
• Next-to-next-to-leading-order collinear and soft gluon corrections for t-channel single top quark production
• Automation of one-loop QCD corrections
• Four Generations and Higgs Physics
• Quarks and Leptons Beyond the Third Generation
• Measurements of Inclusive W and Z Cross Sections in pp Collisions at sqrt(s)=7 TeV
• Four Statements about the Fourth Generation
• Large N and double scaling limits in two dimensions
• Missing transverse energy performance of the CMS detector
• CMS Tracking Performance Results from early LHC Operation
• Precision Constraints on Extra Fermion Generations
• SM with four generations: Selected implications for rare B and K decays
• Search for Fermion-Pair Decays $Q\Qbar \to (\t\Wmp)(\tbar\Wpm)$ in Same-Charge Dilepton Events
• Patterns of Flavour Violation in the Presence of a Fourth Generation of Quarks and Leptons
• Measurement of the t t-bar Production Cross Section in pp Collisions at 7 TeV in Lepton + Jets Events Using b-quark Jet Identification
• The CMS High Level Trigger
• Matching Parton Showers and Matrix Elements
• Search for heavy, top-like quark pair production in the dilepton final state in pp collisions at sqrt(s) = 7 TeV
• Search for heavy bottom-like quarks decaying to an electron or muon and jets in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV
• Search for down-type fourth generation quarks with the ATLAS detector in events with one lepton and hadronically decaying W bosons
• Higgs production and decay with a fourth Standard-Model-like fermion generation
• Flavor Changing Neutral Currents involving Heavy Quarks with Four Generations
• Source of CP Violation for Baryon Asymmetry of the Universe
• Search for a Heavy Bottom-like Quark in pp Collisions at sqrt(s) = 7 TeV
• Direct Mass Limits for Chiral Fourth-Generation Quarks in All Mixing Scenarios
• Source of CP Violation for the Baryon Asymmetry of the Universe

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