Inclusive search for a vector-like T quark with charge 2/3 in pp collisions at sqrt(s) = 8 TeV

Abstract

A search is performed for a massive new vector-like quark T, with charge 2/3, that is pair produced together with its antiparticle in proton-proton collisions. The data were collected by the CMS experiment at the Large Hadron Collider in 2012 at sqrt(s) = 8 TeV and correspond to an integrated luminosity of 19.5 inverse femtobarns. The T quark is assumed to decay into three different final states, bW, tZ, and tH. The search is carried out using events with at least one isolated lepton. No deviations from standard model expectations are observed, and lower limits are set on the T quark mass at 95% confidence level. The lower limit lies between 687 and 782 GeV for all possible values of the branching fractions into the three different final states assuming strong production. These limits are the most stringent constraints to date on the existence of such a quark.

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References in corpus (15)

• 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
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
• Jet substructure as a new Higgs search channel at the LHC
• -- HATHOR -- HAdronic Top and Heavy quarks crOss section calculatoR
• 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
• Jet substructure as a new Higgs search channel at the LHC
• Techniques for improved heavy particle searches with jet substructure
• QCD radiation in the production of heavy colored particles at the LHC
• Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at sqrt(s) = 7 TeV
• Measurement of the t t-bar production cross section in pp collisions at sqrt(s) = 7 TeV with lepton + jets final states
• Search for pair produced fourth-generation up-type quarks in pp collisions at sqrt(s) = 7 TeV with a lepton in the final state

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