Search for the decay of a Higgs boson in the ℓℓγ channel in proton-proton collisions at √s=13 TeV
A search for a Higgs boson decaying into a pair of electrons or muons and a photon is described. Higgs boson decays to a Z boson and a photon (H → Zγ → ``γ,` = e or µ), or to two photons, one of which has an internal conversion into a muon pair (H → γ ∗γ → µµγ) were considered. The analysis is p...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Springer Nature
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/69751/ http://irep.iium.edu.my/69751/ http://irep.iium.edu.my/69751/ http://irep.iium.edu.my/69751/1/69751_Search%20for%20the%20decay%20of%20a%20Higgs%20boson_article.pdf http://irep.iium.edu.my/69751/2/69751_Search%20for%20the%20decay%20of%20a%20Higgs%20boson_scopus.pdf http://irep.iium.edu.my/69751/13/69751%20Search%20for%20the%20decay%20of%20a%20Higgs%20boson%20WOS.pdf |
| Summary: | A search for a Higgs boson decaying into a pair of electrons or muons and a
photon is described. Higgs boson decays to a Z boson and a photon (H → Zγ → ``γ,` = e
or µ), or to two photons, one of which has an internal conversion into a muon pair (H →
γ
∗γ → µµγ) were considered. The analysis is performed using a data set recorded by
the CMS experiment at the LHC from proton-proton collisions at a center-of-mass energy
of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1
. No significant excess
above the background prediction has been found. 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
vary between 1.4 and 4.0 (6.1 and 11.4) times the standard model cross section for H →
γ
∗γ → µµγ (H → Zγ → ``γ) in the 120–130 GeV mass range of the ``γ system. The
H → γ
∗γ → µµγ and H → Zγ → ``γ analyses are combined for mH = 125 GeV, obtaining
an observed (expected) 95% confidence level upper limit of 3.9 (2.0) times the standard
model cross section. |
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