Search for nonresonant Higgs boson pair production in final states with two bottom quarks and two photons in proton-proton collisions at √s = 13 TeV
Entity
UAM. Departamento de Física TeóricaPublisher
SpringerDate
2021-03-01Citation
10.1007/JHEP03(2021)257
Journal of High Energy Physics 3 (2021): 257
ISSN
1126-6708 (print); 1029-8479 (online)DOI
10.1007/JHEP03(2021)257Project
info:eu-repo/grantAgreement/EC/H2020/675440/EU//AMVA4NewPhysics; info:eu-repo/grantAgreement/EC/H2020/724704/EU//HIGCC; info:eu-repo/grantAgreement/EC/H2020/752730/EU//LHCTOPVLQ; info:eu-repo/grantAgreement/EC/H2020/765710/EU//INSIGHTS; Gobierno de España. MDM-2015-0509Editor's Version
https://doi.org/10.1007/JHEP03(2021)257Subjects
Boson; Partons; Higgs Bosons; FísicaNote
Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAMRights
© 2021, The Author(s)Abstract
A search for nonresonant production of Higgs boson pairs via gluon-gluon and vector boson fusion processes in final states with two bottom quarks and two photons is presented. The search uses data from proton-proton collisions at a center-of-mass energy of √s = 13 TeV recorded with the CMS detector at the LHC, corresponding to an integrated luminosity of 137 fb−1. No significant deviation from the background-only hypothesis is observed. An upper limit at 95% confidence level is set on the product of the Higgs boson pair production cross section and branching fraction into γγbb ¯. The observed (expected) upper limit is determined to be 0.67 (0.45) fb, which corresponds to 7.7 (5.2) times the standard model prediction. This search has the highest sensitivity to Higgs boson pair production to date. Assuming all other Higgs boson couplings are equal to their values in the standard model, the observed coupling modifiers of the trilinear Higgs boson self-coupling κλ and the coupling between a pair of Higgs bosons and a pair of vector bosons c2V are constrained within the ranges −3.3 < κλ < 8.5 and −1.3 < c2V < 3.5 at 95% confidence level. Constraints on κλ are also set by combining this analysis with a search for single Higgs bosons decaying to two photons, produced in association with top quark-antiquark pairs, and by performing a simultaneous fit of κλ and the top quark Yukawa coupling modifier κt
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Google Scholar:Sirunyan, A. M.
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CMS Collaboration
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Albajar Molera, Carmen
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Fernández Trocóniz Acha, Jorge
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Reyes Almanza, Rogelio
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