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


CMS Collaboration; Canelli, F; Chiochia, V; Kilminster, B; Robmann, P; et al (2016). Measurement of differential and integrated fiducial cross sections for Higgs boson production in the four-lepton decay channel in pp collisions at $\sqrt{s}$ = 7 and 8 TeV. Journal of High Energy Physics, 1604:5.

Abstract

Integrated fiducial cross sections for the production of four leptons via the H → 4l decays (l = e, μ) are measured in pp collisions at $\sqrt{s}$ = 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 → 4l cross section, and its ratio to the H → 4l 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 → 4l fiducial cross section is measured to be $0.56_{-0.44}$$^{+0.67} (stat)_{-0.06}$$^{+0.21} (syst) fb$ at 7 TeV, and $1.11_{-0.35}$$^{+0.41} (stat) _{-0.10}$$^{0.14} (syst) fb$ at 8 TeV. The measurements are found to be compatible with theoretical calculations based on the standard model.

Abstract

Integrated fiducial cross sections for the production of four leptons via the H → 4l decays (l = e, μ) are measured in pp collisions at $\sqrt{s}$ = 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 → 4l cross section, and its ratio to the H → 4l 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 → 4l fiducial cross section is measured to be $0.56_{-0.44}$$^{+0.67} (stat)_{-0.06}$$^{+0.21} (syst) fb$ at 7 TeV, and $1.11_{-0.35}$$^{+0.41} (stat) _{-0.10}$$^{0.14} (syst) fb$ at 8 TeV. The measurements are found to be compatible with theoretical calculations based on the standard model.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2016
Deposited On:10 Jan 2017 10:24
Last Modified:02 Feb 2018 11:17
Publisher:Springer
ISSN:1029-8479
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/JHEP04(2016)005

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