Search for Pair Production of Vector-Like Quarks in the bWb‾W channel from Proton–proton Collisions at √s = 13 TeV
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Author(s)
CMS Collaboration
Abercrombie, Daniel Robert
Allen, Brandon Leigh
Azzolini, Virginia
Barbieri, Richard Alexander
Baty, Austin Alan
Bi, Ran
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
Date Issued
December 20, 2018
Journal
Physics Letters B
Publisher
Elsevier BV
Citation
Sirunyan, A.M. et al. “Search for Pair Production of Vector-Like Quarks in the bWb‾W channel from Proton–proton Collisions at √s = 13 TeV.” Physics Letters B 779 (April 2018): 82–106 © 2018 The Authors
Version
Final published version
Abstract
A search is presented for the production of vector-like quark pairs, TT or YY, with electric charge of 2/3(T) or −4/3(Y), in proton–proton collisions at √s=13 TeV. The data were collected by the CMS experiment at the LHC in 2016 and correspond to an integrated luminosity of 35.8 fb⁻¹. The Tand Yquarks are assumed to decay exclusively to a Wboson and a bquark. The search is based on events with a single isolated electron or muon, large missing transverse momentum, and at least four jets with large transverse momenta. In the search, a kinematic reconstruction of the final state observables is performed, which would permit a signal to be detected as a narrow mass peak (≈7% resolution). The observed number of events is consistent with the standard model prediction. Assuming strong pair production of the vector-like quarks and a 100% branching fraction to bW, a lower limit of 1295 GeV at 95% confidence level is set on the T and Y quark masses. Keywords: CMS; Physics; Vector-like quarks
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2018.01.077
