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Search for associated production of a Higgs boson and a single top quark in proton-proton collisions at s =13 TeV

AuthorsBrochero Cifuentes, J. A. ; Cabrillo, I. J. ; Calderon, Alicia ; Chazin Quero, B. ; Duarte Campderros, J. ; Fernández, M. ; Fernández Manteca, P. J.; García Alonso, A. ; García-Ferrero, J. ; Gómez, G. ; Martínez-Rivero, Celso ; López Virto, A. ; Marco, Jesús ; Martínez Ruiz del Arbol, P. ; Matorras, Francisco ; Piedra, Jonatan ; Prieels, C. ; Rodrigo, Teresa ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Trevisani, N.; Vila, Iván ; Vilar Cortabitarte, R.
Issue Date21-May-2019
PublisherAmerican Physical Society
CitationPhysical Review D 99(9): 092005 (2019)
AbstractA search is presented for the production of a Higgs boson in association with a single top quark, based on data collected in 2016 by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV, which corresponds to an integrated luminosity of 35.9 fb-1. The production cross section for this process is highly sensitive to the absolute values of the top quark Yukawa coupling, yt; the Higgs boson coupling to vector bosons, gHVV; and, uniquely, their relative sign. Analyses using multilepton signatures, targeting H→WW, H→ττ, and H→ZZ decay modes, and signatures with a single lepton and a bb pair, targeting the H→bb decay, are combined with a reinterpretation of a measurement in the H→γγ channel to constrain yt. For a standard model-like value of gHVV, the data favor positive values of yt and exclude values of yt below about -0.9ytSM.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.99.092005
Identifiersdoi: 10.1103/PhysRevD.99.092005
e-issn: 2470-0029
issn: 2470-0010
Appears in Collections:(IFCA) Artículos
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