Search for pair production of a new heavy quark that decays into a W boson and a light quark in pp collisions at s√=8 TeV with the ATLAS detector

, The ATLAS collaboration (2015) Search for pair production of a new heavy quark that decays into a W boson and a light quark in pp collisions at s√=8  TeV with the ATLAS detector. Physical Review D, 92 (11). ISSN 1550-7998

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Abstract

A search is presented for pair production of a new heavy quark (Q) that decays into a W boson and a light quark (q) in the final state where one W boson decays leptonically (to an electron or muon plus a neutrino) and the other W boson decays hadronically. The analysis is performed using an integrated luminosity of 20.3  fb−1 of pp collisions at s√=8  TeV collected by the ATLAS detector at the LHC. No evidence of QQ¯ production is observed. New chiral quarks with masses below 690 GeV are excluded at 95% confidence level, assuming BR(Q→Wq)=1. Results are also interpreted in the context of vectorlike quark models, resulting in the limits on the mass of a vectorlike quark in the two-dimensional plane of BR(Q→Wq) versus BR(Q→Hq).

Item Type:
Journal Article
Journal or Publication Title:
Physical Review D
ID Code:
78060
Deposited By:
Deposited On:
29 Jan 2016 11:38
Refereed?:
Yes
Published?:
Published
Last Modified:
23 Jul 2021 03:15