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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

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dc.contributor.author CMS Collaboration en_US
dc.contributor.author Sirunyan, A. M. en_US
dc.contributor.author DUBE, SOURABH en_US
dc.contributor.author KANSAL, B. en_US
dc.contributor.author PANDEY, S. en_US
dc.contributor.author RANE, A. en_US
dc.contributor.author RASTOGI, A. en_US
dc.contributor.author SHARMA, SEEMA et al. en_US
dc.date.accessioned 2021-04-29T11:42:33Z
dc.date.available 2021-04-29T11:42:33Z
dc.date.issued 2021-03 en_US
dc.identifier.citation Journal of High Energy Physics, 2021(3), 257. en_US
dc.identifier.issn 1029-8479 en_US
dc.identifier.uri http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/5845
dc.identifier.uri https://doi.org/10.1007/JHEP03(2021)257 en_US
dc.description.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. en_US
dc.language.iso en en_US
dc.publisher Springer Nature en_US
dc.subject Hadron-Hadron scattering (experiments) en_US
dc.subject Higgs physics en_US
dc.subject 2021-APR-WEEK3 en_US
dc.subject TOC-APR-2021 en_US
dc.subject 2021 en_US
dc.title 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 en_US
dc.type Article en_US
dc.contributor.department Dept. of Physics en_US
dc.identifier.sourcetitle Journal of High Energy Physics en_US
dc.publication.originofpublisher Foreign en_US


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