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

Open access
Date
2014-02Type
- Journal Article
Citations
Cited 139 times in
Web of Science
Cited 143 times in
Scopus
ETH Bibliography
yes
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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 s=8TeV and correspond to an integrated luminosity of 19.5fb−1. 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. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000079445Publication status
publishedExternal links
Journal / series
Physics Letters BVolume
Pages / Article No.
Publisher
ElsevierSubject
CMS; PhysicsOrganisational unit
03381 - Pauss, Felicitas (emeritus)
03593 - Dissertori, Günther / Dissertori, Günther
03904 - Wallny, Rainer / Wallny, Rainer
08803 - Grab, Christoph (Tit.Prof.)
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Show all metadata
Citations
Cited 139 times in
Web of Science
Cited 143 times in
Scopus
ETH Bibliography
yes
Altmetrics