Search for vector-like T or B quark pairs in leptonic final states in 36 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV

A search is presented for pair production of heavy vector-like T or B quarks in proton-proton collisions at $\sqrt{s} = 13~\mathrm{TeV}$. The search uses a data sample corresponding to an integrated luminosity of $35.9~\mathrm{fb}^{-1}$, collected with the CMS detector at the CERN LHC in 2016. Pair...

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Autor principal: CMS Collaboration
Publicado: 2018
Materias:
Acceso en línea:http://cds.cern.ch/record/2308309
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author CMS Collaboration
author_facet CMS Collaboration
author_sort CMS Collaboration
collection CERN
description A search is presented for pair production of heavy vector-like T or B quarks in proton-proton collisions at $\sqrt{s} = 13~\mathrm{TeV}$. The search uses a data sample corresponding to an integrated luminosity of $35.9~\mathrm{fb}^{-1}$, collected with the CMS detector at the CERN LHC in 2016. Pair production of T quarks would result in a wide range of final states, since vector-like T quarks of charge $2e/3$ are predicted to decay to bW, tZ, and tH. Likewise, vector-like B quarks are predicted to decay to tW, bZ, and bH. This search is performed in three channels corresponding to final states with a single lepton, two leptons with the same electric charge sign, and at least three leptons. This search excludes T quark masses below 1140--1300 GeV and B quark masses below 910--1240 GeV for various branching fraction combinations, extending the reach of previous CMS searches by 200--600 GeV. These are the strongest exclusion limits to date for T quarks with $\mathcal{B}(\mathrm{bW}) < 0.6$ and B quarks with $\mathcal{B}(\mathrm{tW}) < 0.6$.
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spelling cern-23083092019-09-30T06:29:59Zhttp://cds.cern.ch/record/2308309CMS CollaborationSearch for vector-like T or B quark pairs in leptonic final states in 36 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeVParticle Physics - ExperimentA search is presented for pair production of heavy vector-like T or B quarks in proton-proton collisions at $\sqrt{s} = 13~\mathrm{TeV}$. The search uses a data sample corresponding to an integrated luminosity of $35.9~\mathrm{fb}^{-1}$, collected with the CMS detector at the CERN LHC in 2016. Pair production of T quarks would result in a wide range of final states, since vector-like T quarks of charge $2e/3$ are predicted to decay to bW, tZ, and tH. Likewise, vector-like B quarks are predicted to decay to tW, bZ, and bH. This search is performed in three channels corresponding to final states with a single lepton, two leptons with the same electric charge sign, and at least three leptons. This search excludes T quark masses below 1140--1300 GeV and B quark masses below 910--1240 GeV for various branching fraction combinations, extending the reach of previous CMS searches by 200--600 GeV. These are the strongest exclusion limits to date for T quarks with $\mathcal{B}(\mathrm{bW}) < 0.6$ and B quarks with $\mathcal{B}(\mathrm{tW}) < 0.6$.CMS-PAS-B2G-17-011oai:cds.cern.ch:23083092018
spellingShingle Particle Physics - Experiment
CMS Collaboration
Search for vector-like T or B quark pairs in leptonic final states in 36 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV
title Search for vector-like T or B quark pairs in leptonic final states in 36 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV
title_full Search for vector-like T or B quark pairs in leptonic final states in 36 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV
title_fullStr Search for vector-like T or B quark pairs in leptonic final states in 36 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV
title_full_unstemmed Search for vector-like T or B quark pairs in leptonic final states in 36 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV
title_short Search for vector-like T or B quark pairs in leptonic final states in 36 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV
title_sort search for vector-like t or b quark pairs in leptonic final states in 36 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 tev
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2308309
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