Search for pair production of vector-like quarks in the bWb‾W channel from proton–proton collisions at s=13TeV

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Search for pair production of vector-like quarks in the bWb‾W channel from proton–proton collisions at s=13TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 779. pp. 82-106. ISSN 0370-2693

	PDF - Published Version Restricted to Repository staff only Download (1MB) | Request a copy
	PDF (Scopus) - Supplemental Material Restricted to Repository staff only Download (687kB) | Request a copy

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 T and Y quarks are assumed to decay exclusively to a W boson and a b quark. 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

Item Type:	Article (Journal)
Additional Information:	7861/69734
Uncontrolled Keywords:	CMS; Physics; Vector-like quarks
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	Dr Mohd Adli MD Ali
Date Deposited:	15 Jan 2019 16:40
Last Modified:	15 Jul 2019 09:55
URI:	http://irep.iium.edu.my/id/eprint/69734

Actions (login required)

View Item