Measurements of properties of the Higgs boson decaying into the four-lepton final state in pp collisions at √s=13 TeV
Properties of the Higgs boson are measured in the H → ZZ → 4` (` = e, µ) decay channel. A data sample of proton-proton collisions at √ s = 13 TeV, collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 35.9 fb−1 is used. The signal strength modifier µ, defin...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Springer Verlag
2017
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/63040/ http://irep.iium.edu.my/63040/ http://irep.iium.edu.my/63040/ http://irep.iium.edu.my/63040/1/63040_Measurements%20of%20properties%20of%20the%20Higgs%20boson_article.pdf http://irep.iium.edu.my/63040/7/63040_Measurements%20of%20properties%20of%20the%20Higgs%20boson_scopus.pdf http://irep.iium.edu.my/63040/13/63040%20Measurements%20of%20Higgs%20boson%20properties%20WOS.pdf |
| Summary: | Properties of the Higgs boson are measured in the H → ZZ → 4` (` = e, µ)
decay channel. A data sample of proton-proton collisions at √
s = 13 TeV, collected with
the CMS detector at the LHC and corresponding to an integrated luminosity of 35.9 fb−1
is
used. The signal strength modifier µ, defined as the ratio of the observed Higgs boson rate in
the H → ZZ → 4` decay channel to the standard model expectation, is measured to be µ =
1.05+0.19
−0.17 at mH = 125.09 GeV, the combined ATLAS and CMS measurement of the Higgs
boson mass. The signal strength modifiers for the individual Higgs boson production modes
are also measured. The cross section in the fiducial phase space defined by the requirements
on lepton kinematics and event topology is measured to be 2.92 +0.48
−0.44(stat) +0.28
−0.24(syst) fb,
which is compatible with the standard model prediction of 2.76±0.14 fb. Differential cross
sections are reported as a function of the transverse momentum of the Higgs boson, the
number of associated jets, and the transverse momentum of the leading associated jet. The
Higgs boson mass is measured to be mH = 125.26 ± 0.21 GeV and the width is constrained
using the on-shell invariant mass distribution to be ΓH < 1.10 GeV, at 95% confidence
level. |
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