Search for the flavor-changing neutral current interactions of the top quark and the Higgs boson which decays into a pair of b quarks at √s=13 TeV
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Sirunyan2018_Article_SearchForTheFlavor-changingNeu.pdf
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Author(s)
Allen, Brandon Leigh
Azzolini, Virginia
Barbieri, Richard Alexander
Baty, Austin Alan
Bauer, Gerry P
Bi, Ran
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
D'Alfonso, Mariarosaria
Date Issued
June 2018
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
The CMS collaboration, et al. “Search for the Flavor-Changing Neutral Current Interactions of the Top Quark and the Higgs Boson Which Decays into a Pair of b Quarks at √s = 13 TeV.” Journal of High Energy Physics, vol. 2018, no. 6, June 2018.
Version
Final published version
Abstract
A search for flavor-changing neutral currents (FCNC) in events with the top
quark and the Higgs boson is presented. The Higgs boson decay to a pair of b quarks is considered. The data sample corresponds to an integrated luminosity of 35.9 fb[superscript −1] recorded by the CMS experiment at the LHC in proton-proton collisions at √s = 13 TeV. Two channels are considered: single top quark FCNC production in association with the Higgs
boson (pp → tH), and top quark pair production with FCNC decay of the top quark (t →qH). Final states with one isolated lepton and at least three reconstructed jets, among which at least two are associated with b quarks, are studied. No significant deviation is observed from the predicted background. Observed (expected) upper limits at 95% confidence level
are set on the branching fractions of top quark decays, B(t → uH) < 0.47% (0.34%) and B(t → cH) < 0.47% (0.44%), assuming a single nonzero FCNC coupling. Keywords: FCNC Interaction, Hadron-Hadron scattering (experiments), Higgs physics, Top physics
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1007/JHEP06(2018)102
