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Please use this identifier to cite or link to this item: https://elib.bsu.by/handle/123456789/259529
Title: Observation of Higgs Boson Decay to Bottom Quarks
Authors: Chekhovsky, V.
Mossolov, V.
Suarez Gonzalez, J.
CMS Collaboration
Keywords: ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика
Issue Date: 2018
Publisher: American Physical Society
Citation: Phys Rev Lett 2018;121(12).
Abstract: The observation of the standard model (SM) Higgs boson decay to a pair of bottom quarks is presented. The main contribution to this result is from processes in which Higgs bosons are produced in association with a W or Z boson (VH), and are searched for in final states including 0, 1, or 2 charged leptons and two identified bottom quark jets. The results from the measurement of these processes in a data sample recorded by the CMS experiment in 2017, comprising 41.3 fb-1 of proton-proton collisions at s=13 TeV, are described. When combined with previous VH measurements using data collected at s=7, 8, and 13 TeV, an excess of events is observed at mH=125 GeV with a significance of 4.8 standard deviations, where the expectation for the SM Higgs boson is 4.9. The corresponding measured signal strength is 1.01±0.22. The combination of this result with searches by the CMS experiment for H→bb in other production processes yields an observed (expected) significance of 5.6 (5.5) standard deviations and a signal strength of 1.04±0.20.
URI: https://elib.bsu.by/handle/123456789/259529
Scopus: 10.1103/PhysRevLett.121.121801
metadata.dc.identifier.scopus: 85054036077
Sponsorship: ST/I003622/1,ST/I505580/1,ST/J004871/1,ST/J005479/1,ST/K003542/1,ST/L005603/1,ST/N000242/1,ST/N001273/1
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS

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