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Title: Inclusive search for a vector-like T quark with charge $$\frac{2}{3}$$ 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.

Authors:
 [1]
+ Show Author Affiliations
  1. Yerevan Physics Inst. (YerPhI), Yerevan (Armenia). et al.
Publication Date:
Research Org.:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Org.:
CMS Collaboration
OSTI Identifier:
1151697
Report Number(s):
FERMILAB-PUB-13-617-CMS
Journal ID: ISSN 0370-2693; arXiv eprint number arXiv:1311.7667; TRN: US1601002
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Volume: 729; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CMS; physics

Citation Formats

Chatrchyan, Serguei. Inclusive search for a vector-like T quark with charge $\frac{2}{3}$ in pp collisions at $\sqrt{s}$ = 8 TeV. United States: N. p., 2014. Web. doi:10.1016/j.physletb.2014.01.006.
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Chatrchyan, Serguei. Inclusive search for a vector-like T quark with charge $\frac{2}{3}$ in pp collisions at $\sqrt{s}$ = 8 TeV. United States. https://doi.org/10.1016/j.physletb.2014.01.006
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Chatrchyan, Serguei. Wed . "Inclusive search for a vector-like T quark with charge $\frac{2}{3}$ in pp collisions at $\sqrt{s}$ = 8 TeV". United States. https://doi.org/10.1016/j.physletb.2014.01.006. https://www.osti.gov/servlets/purl/1151697.
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@article{osti_1151697,
title = {Inclusive search for a vector-like T quark with charge $\frac{2}{3}$ in pp collisions at $\sqrt{s}$ = 8 TeV},
author = {Chatrchyan, Serguei},
abstractNote = {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.},
doi = {10.1016/j.physletb.2014.01.006},
journal = {Physics Letters B},
number = C,
volume = 729,
place = {United States},
year = {Wed Jan 08 00:00:00 EST 2014},
month = {Wed Jan 08 00:00:00 EST 2014}
}
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https://doi.org/10.1016/j.physletb.2014.01.006
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