The University of Southampton
University of Southampton Institutional Repository
Warning ePrints Soton is experiencing an issue with some file downloads not being available. We are working hard to fix this. Please bear with us.

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

Search for single production of vector-like quarks decaying to a b quark and a Higgs boson
Search for single production of vector-like quarks decaying to a b quark and a Higgs boson
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.
1029-8479
1-41
Sirunyan, A.M.
846a7137-803d-49de-aae7-d6b85519e829
Tumasyan, A.
6e9fc82d-9104-48e4-8a4d-60f52fdb9ee5
Belyaev, A.
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
The CMS Collaboration
Sirunyan, A.M.
846a7137-803d-49de-aae7-d6b85519e829
Tumasyan, A.
6e9fc82d-9104-48e4-8a4d-60f52fdb9ee5
Belyaev, A.
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3

Sirunyan, A.M. and Tumasyan, A. , The CMS Collaboration (2018) Search for single production of vector-like quarks decaying to a b quark and a Higgs boson. Journal of High Energy Physics, 2018 (31), 1-41. (doi:10.1007/JHEP06(2018)031).

Record type: Article

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.

Text
Sirunyan2018_Article_SearchForSingleProductionOfVec - Version of Record
Available under License Creative Commons Attribution.
Download (722kB)

More information

Accepted/In Press date: 15 May 2018
e-pub ahead of print date: 5 June 2018
Published date: June 2018

Identifiers

Local EPrints ID: 424659
URI: http://eprints.soton.ac.uk/id/eprint/424659
ISSN: 1029-8479
PURE UUID: 79c2b3a1-789d-43f0-88d5-c632eab33508
ORCID for A. Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

Catalogue record

Date deposited: 05 Oct 2018 11:39
Last modified: 26 Nov 2021 02:52

Export record

Altmetrics

Contributors

Author: A.M. Sirunyan
Author: A. Tumasyan
Author: A. Belyaev ORCID iD
Corporate Author: The CMS Collaboration

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×