Measurement of differential and integrated fiducial cross sections for Higgs boson production in the four-lepton decay channel in pp collisions at √s = 7 and 8 TeV

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Date
2016-04-01Author
Kalakhety, Vardan
Sirunyan, A.M.
Baarmand, Marc M.
Bhopatkar, Vallary
Colafranceschi, Stefano
Hohlmann, Marcus
Kalakhety, Himali
Noonan, Daniel
Roy, Tuhin S.
Yumiceva, Francisco
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Show full item recordAbstract
: Integrated fiducial cross sections for the production of four leptons via the
H → 4` decays (` = e, µ) are measured in pp collisions at √
s = 7 and 8 TeV. Measurements
are performed with data corresponding to integrated luminosities of 5.1 fb−1 at
7 TeV, and 19.7 fb−1 at 8 TeV, collected with the CMS experiment at the LHC. Differential
cross sections are measured using the 8 TeV data, and are determined as functions of the
transverse momentum and rapidity of the four-lepton system, accompanying jet multiplicity,
transverse momentum of the leading jet, and difference in rapidity between the Higgs
boson candidate and the leading jet. A measurement of the Z → 4` cross section, and its
ratio to the H → 4` cross section is also performed. All cross sections are measured within
a fiducial phase space defined by the requirements on lepton kinematics and event topology.
The integrated H → 4` fiducial cross section is measured to be 0.56+0.67
−0.44(stat) +0.21
−0.06(syst) fb
at 7 TeV, and 1.11+0.41
−0.35(stat) +0.14
−0.10(syst) fb at 8 TeV. The measurements are found to be
compatible with theoretical calculations based on the standard model.