Search for the standard model Higgs boson in the dilepton plus photon channel in $\mathrm{p}\mathrm{p}$ collisions at $\sqrt{s}=13~\mathrm{TeV}$ - INSPIRE

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Search for the standard model Higgs boson in the dilepton plus photon channel in $\mathrm{p}\mathrm{p}$ collisions at $\sqrt{s}=13~\mathrm{TeV}$

CMS

Collaboration

2018

Report number:

CMS-PAS-HIG-17-007

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

reference search7 citations

Citations per year

Abstract:

A search for a Higgs boson decaying into a pair of electrons or muons plus a photon is described. This final state has contributions from Higgs decays to a

\mathrm{Z}

boson and a photon (

\mathrm{H}\rightarrow \mathrm{Z}\gamma\rightarrow \ell\ell\gamma~,~\ell=\mathrm{e}

or

\mu

), or to two photons, one of which has an internal conversion into a lepton pair (

\mathrm{H}\rightarrow \gamma^{*}\gamma\rightarrow\mu\mu\gamma

). The analysis is performed using a dataset recorded by the CMS experiment at the LHC from proton-proton collisions at a center-of-mass energy of

13~\mathrm{TeV}

, corresponding to an integrated luminosity of

35.9~\mathrm{fb}^{-1}

. No significant excess above the background prediction has been found in the

120-130~\mathrm{GeV}

mass range. Limits are set on the cross section for a standard model Higgs boson decaying to opposite-sign electron or muon pairs and a photon. The observed limits on cross section times the corresponding branching fractions fluctuate between 4 and 1.4 (11 and 6) times the standard model cross section for

\mathrm{H}\rightarrow \gamma^{*}\gamma\rightarrow\mu\mu\gamma

(

\mathrm{H}\to\mathrm{Z}\gamma\to\ell\ell\gamma

). The

\mathrm{H}\to\gamma^*\gamma\to\mu\mu\gamma

and

\mathrm{H}\to\mathrm{Z}\gamma\to\ell\ell\gamma

analyses are combined for

m_\mathrm{H}=125~\mathrm{GeV}

, obtaining an observed (expected)

95\%

upper limit of 3.9 (2.0) times the standard model cross section.

Note:

Preliminary results

Data
p p: colliding beams
muon: pair production
p p: scattering
Z0: leptonic decay
photon: associated production
Higgs particle: radiative decay
electron: pair production
CERN LHC Coll
fluctuation

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Figures(27)

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