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Título:	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
Autor:	CMS Collaboration; Brochero Cifuentes, J. A. CSIC ORCID; Cabrillo, I. J. CSIC ORCID ; Calderon, Alicia ; Duarte Campderros, J. CSIC ORCID ; Fernández-García, Marcos CSIC ORCID ; Fernandez Madrazo, C. CSIC ORCID; Fernández Manteca, P. J. CSIC ORCID; García Alonso, A. CSIC ORCID; Gómez, Gervasio CSIC ORCID ; Martínez-Rivero, Celso CSIC ORCID ; Martínez Ruiz del Arbol, P. CSIC ORCID; Matorras, Francisco CSIC ORCID ; Matorras-Cuevas, Pablo CSIC ORCID; Piedra, Jonatan CSIC ORCID ; Prieels, C. CSIC; Rodrigo, Teresa CSIC ORCID; Ruiz Jimeno, Alberto CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vizán, J. CSIC ORCID
Fecha de publicación:	2022
Editor:	Springer Nature
Citación:	Journal of High Energy Physics 2022: 169 (2022)
Resumen:	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 √s = 13 TeV. 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)%.
Descripción:	CMS collaboration: et al.
Versión del editor:	https://doi.org/10.1007/JHEP02(2022)169
URI:	http://hdl.handle.net/10261/305340
ISSN:	10.1007/JHEP02(2022)169
E-ISSN:	1029-8479
Aparece en las colecciones:	(IFCA) Artículos