Search for single production of vector-like quarks decaying to a b quark and a higgs boson

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Search for single production of vector-like quarks decaying to a b quark and a higgs boson. Journal of High Energy Physics, 2018 (6). pp. 1-40. E-ISSN 1029-8479

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Abstract

A search is presented for single production of heavy vector-like quarks (B) that decay to a Higgs boson and a b quark, with the Higgs boson decaying to a highly boosted bb pair reconstructed as a single collimated jet. The analysis is based on data collected ¯ by the CMS experiment in proton-proton collisions at √ s = 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1 . The data are consistent with background expectations, and upper limits at 95% confidence level on the product of the B quark cross section and the branching fraction are obtained in the range 1.28–0.07 pb, for a narrow B quark with a mass between 700 and 1800 GeV. The production of B quarks with widths of 10, 20 and 30% of the resonance mass is also considered, and the sensitivities obtained are similar to those achieved in the narrow width case. This is the first search at the CERN LHC for the single production of a B quark through its fully hadronic decay channel, and the first study considering finite resonance widths of the B quark.

Item Type:	Article (Journal)
Additional Information:	7861/66003
Uncontrolled Keywords:	Beyond Standard Model, Hadron-Hadron scattering (experiments), vectorlike 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:	30 Aug 2018 10:13
Last Modified:	30 Aug 2018 10:13
URI:	http://irep.iium.edu.my/id/eprint/66003

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