Search for flavor-changing neutral current interactions of the top quark and the Higgs boson decaying to a bottom quark-antiquark pair at √s = 13 TeV

Search for flavor-changing neutral current interactions of the top quark and the Higgs boson decaying to a bottom quark-antiquark pair at √s = 13 TeV

A search for flavor-changing neutral current interactions of the top quark (t) and the Higgs boson (H) is presented. The search is based on a data sample corresponding to an integrated luminosity of 137 fb(-1) recorded by the CMS experiment at the LHC in proton-proton collisions at root s = 13TeV. E...

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Bibliographic Details
Published in:Journal of high energy physics Vol. 2. P. 169 (1-41)
Other Authors: Tumasyan, Armen, Adam, Wolfgang, Andrejkovic, Janik Walter, Borshch, Vladislav, Ivanchenko, Vladimir
Format: Article
Language:English
Subjects:
Хиггса бозон
верхние кварки
антикварки
нижние кварки
топ-кварки
статьи в журналах
Online Access:http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001008301
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245 1 0 |a Search for flavor-changing neutral current interactions of the top quark and the Higgs boson decaying to a bottom quark-antiquark pair at √s = 13 TeV  |c A. Tumasyan, W. Adam, J. W. Andrejkovic [et al.] 
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520 3 |a A search for flavor-changing neutral current interactions of the top quark (t) and the Higgs boson (H) is presented. The search is based on a data sample corresponding to an integrated luminosity of 137 fb(-1) recorded by the CMS experiment at the LHC in proton-proton collisions at root s = 13TeV. Events containing exactly one lepton (muon or electron) and at least three jets, among which at least two are identified as originating from the hadronization of a bottom quark, are analyzed. A set of deep neural networks is used for kinematic event reconstruction, while boosted decision trees distinguish the signal from the background events. No significant excess over the background predictions is observed, and upper limits on the signal production cross sections are extracted. These limits are interpreted in terms of top quark decay branching fractions (B) to the Higgs boson and an up (u) or a charm quark (c). Assuming one nonvanishing extra coupling at a time, the observed (expected) upper limits at 95% confidence level are B(t -> Hu) < 0.079 (0.11)% and B(t -> Hc) < 0.094 (0.086)%. 
653 |a Хиггса бозон 
653 |a верхние кварки 
653 |a антикварки 
653 |a нижние кварки 
653 |a топ-кварки 
655 4 |a статьи в журналах 
700 1 |a Tumasyan, Armen 
700 1 |a Adam, Wolfgang 
700 1 |a Andrejkovic, Janik Walter 
700 1 |a Borshch, Vladislav 
700 1 |a Ivanchenko, Vladimir 
773 0 |t Journal of high energy physics  |d 2022  |g Vol. 2. P. 169 (1-41)  |x 1126-6708 
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