Search for single production of vector-like quarks decaying to a b quark and a Higgs boson
Name
13130_2018_Article_8393.pdf
Size
705.4 KB
Format
Adobe PDF
Checksum (MD5)
2edb01f327a88a69fcd275872c9abeff
Author(s)
Sirunyan, A. M
Tumasyan, A.
Adam, W.
Ambrogi, F.
Asilar, E.
Bergauer, T.
Brandstetter, J.
Brondolin, E.
Dragicevic, M.
Erö, J.
Date Issued
June 2018
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
Sirunyan, A. M. et al. "Search for single production of vector-like quarks decaying to a b quark and a Higgs boson." Journal of High Energy Physics 2018 (June 2018): 31 © 2018 The Author(s)
Version
Final published version
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 b[overline b] 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. Keywords: Beyond Standard Model; Hadron-Hadron scattering (experiments); vector-like quarks
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP06(2018)031
