A 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, y_t the Higgs boson coupling to vector bosons, g_HVV and, uniquely, their relative sign. Analyses using multilepton signatures, targeting H->WW, H->tautau, 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->gamma gamma channel to constrain y_t. For a standard model-like value of g_HVV, the data favor positive values of y_t and exclude values of yt below about -0.9 y_t^SM.

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

Ravera F.;Meridiani P.;Amapane N.;Argiro S.;Bellan R.;Cappati A.;Costa M.;Covarelli R.;Kiani B.;Migliore E.;Monaco V.;Monteil E.;Obertino M. M.;Pacher L.;Pinna Angioni G. L.;Romero A.;Sacchi R.;Salvatico R.;Shchelina K.;Sola V.;Solano A.;Soldi D.;Rumerio P.;
2019-01-01

Abstract

A 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, y_t the Higgs boson coupling to vector bosons, g_HVV and, uniquely, their relative sign. Analyses using multilepton signatures, targeting H->WW, H->tautau, 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->gamma gamma channel to constrain y_t. For a standard model-like value of g_HVV, the data favor positive values of y_t and exclude values of yt below about -0.9 y_t^SM.
2019
Inglese
Esperti anonimi
99
9
1
29
29
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262
2298
Sirunyan A.M.; Tumasyan A.; Adam W.; Ambrogi F.; Asilar E.; Bergauer T.; Brandstetter J.; Dragicevic M.; Ero J.; Escalante Del Valle A.; Flechl M.; Fr...espandi
info:eu-repo/semantics/article
open
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1735477
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