Measurement of Higgs boson decay to a pair of muons in proton-proton collisions at $\sqrt{s}=13\,\mathrm{TeV}$

Measurement of Higgs boson decay to a pair of muons in proton-proton collisions at $\sqrt{s}=13\,\mathrm{TeV}$

CMS

Collaboration

2020

38 pages

Report number:

CMS-PAS-HIG-19-006

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

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Abstract:

A measurement of the 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 weak vector boson, and in association with a pair of top quarks. The measurement is performed using

{\sqrt{s}=13\,\mathrm{TeV}}

proton-proton (pp) collision data, corresponding to an integrated luminosity of

{137\,\mathrm{fb}^{-1}}

, recorded by the CMS experiment at the CERN LHC. An excess of events is observed in data with a significance of 3.0 standard deviations, where the expectation for the standard model (SM) Higgs boson with

{m_{\mathrm{H}} = 125.38\,\mathrm{GeV}}

is 2.5. The measured signal strength, relative to the SM expectation, is

{1.19^{+0.41}_{-0.39}(\mathrm{stat})^{+0.17}_{-0.16}(\mathrm{sys})}

. The combination of this result with that from data recorded at centre-of-mass energies of 7 and

{8\,\mathrm{TeV}}

improves both expected and observed sensitivity by

1\%

. This result constitutes the first evidence for the Higgs boson decay to fermions of the second generation.

Note:

Preliminary results

Monte-Carlo
p p: colliding beams
Higgs particle: leptonic decay
muon: pair production
Higgs particle: hadroproduction
vector boson: associated production
vector boson: fusion
p p: scattering
gluon gluon: fusion
CERN LHC Coll

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