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Evidence for Higgs boson decay to a pair of muons (CROSBI ID 307929)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

(CMS Collaboration) Sirunyan, Albert M ; ... ; Antunović, Željko ; Brigljević, Vuko ; Ferenček, Dinko ; Giljanović, Duje ; Godinović, Nikola ; Kovač, Marko ; Lelas, Damir ; Majumder, Devdatta et al. Evidence for Higgs boson decay to a pair of muons // The Journal of high energy physics, 01 (2021), 148, 68. doi: 10.1007/JHEP01(2021)148

Podaci o odgovornosti

Sirunyan, Albert M ; ... ; Antunović, Željko ; Brigljević, Vuko ; Ferenček, Dinko ; Giljanović, Duje ; Godinović, Nikola ; Kovač, Marko ; Lelas, Damir ; Majumder, Devdatta ; Puljak, Ivica ; Roguljić, Matej ; Starodumov, Andrey ; Đurić, Senka ; Šuša, Tatjana ; Šćulac, Toni ; ... ; Vetens, Wren

CMS Collaboration

engleski

Evidence for Higgs boson decay to a pair of muons

Evidence for Higgs boson decay to a pair of muons is presented. This result combines searches in four exclusive categories targeting the production of the Higgs boson via gluon fusion, via vector boson fusion, in association with a vector boson, and in association with a top quark-antiquark pair. The analysis is performed using proton-proton collision data at $\sqrt{; ; ; s}; ; ; =$ 13 TeV, corresponding to an integrated luminosity of 137 fb$^{; ; ; -1}; ; ; $, recorded by the CMS experiment at the CERN LHC. An excess of events over the background expectation is observed in data with a significance of 3.0 standard deviations, where the expectation for the standard model (SM) Higgs boson with mass of 125.38 GeV is 2.5. The combination of this result with that from data recorded at $\sqrt{; ; ; s}; ; ; =$ 7 and 8 TeV, corresponding to integrated luminosities of 5.1 and 19.7 fb$^{; ; ; -1}; ; ; $, respectively, increases both the expected and observed significances by 1%. The measured signal strength, relative to the SM prediction, is 1.19 $^{; ; ; +0.40}; ; ; _{; ; ; -0.39}; ; ; $ (stat) $^{; ; ; +0.15}; ; ; _{; ; ; -0.14}; ; ; $ (syst). This result constitutes the first evidence for the decay of the Higgs boson to second generation fermions and is the most precise measurement of the Higgs boson coupling to muons reported to date.

High energy physics ; Experimental particle physics ; LHC ; CMS ; Hadron-Hadron scattering (experiments) ; Higgs physics ; p p: colliding beams ; Higgs particle: pair production ; bottom: 2 ; p p: scattering ; Higgs particle: coupling ; Higgs particle: hadroproduction ; Higgs particle: decay modes ; bottom: pair production ; photon: pair production ; top: pair production ; coupling: Yukawa ; coupling constant: upper limit ; vector boson: fusion ; mass spectrum: two-photon ; Standard model

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Podaci o izdanju

01

2021.

148

68

objavljeno

1126-6708

1029-8479

10.1007/JHEP01(2021)148

Povezanost rada

Fizika

Poveznice
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