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Title: Measurement of forward W and Z boson production in pp collisions at $$\sqrt{s}=8$$ TeV

Journal Article · · Journal of High Energy Physics (Online)
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Measurements are presented of electroweak boson production using data from pp collisions at a centre-of-mass energy of $$\sqrt{s}=8$$ TeV. The analysis is based on an integrated luminosity of 2.0 fb–1 recorded with the LHCb detector. The bosons are identified in the W → μν and Z → μ+μ decay channels. The cross-sections are measured for muons in the pseudorapidity range 2.0 < η < 4.5, with transverse momenta pT >20 GeV/c and, in the case of the Z boson, a dimuon mass within 60 < M$$_{μ^{+}μ–}$$ < 120 GeV/c. The results are σ$$_{W^{+}→μ^{+}ν}$$ = 1093.6 ± 2.1 ± 7.2 ± 10.9 ± 12.7 pb,σ$$_{W^{–}→μ^{–}\bar{ν}}$$ = 818.4 ± 1.9 ± 5.0 ± 7.0 ± 9.5 pb,σ$$_{Z→μ^{+}μ–}$$ = 95.0 ± 0.3 ± 0.7 ± 1.1 ± 1.1 pb, where the first uncertainties are statistical, the second are systematic, the third are due to the knowledge of the LHC beam energy and the fourth are due to the luminosity determination. The evolution of the W and Z boson cross-sections with centre-of-mass energy is studied using previously reported measurements with 1.0 fb–1 of data at 7 TeV. Differential distributions are also presented. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Contributing Organization:
The LHCb collaboration
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1525128
Journal Information:
Journal of High Energy Physics (Online), Vol. 2016, Issue 1; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 107 works
Citation information provided by
Web of Science

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Cited By (5)

Measurement of Charged Hadron Production in Z -Tagged Jets in Proton-Proton Collisions at s = 8 TeV journal December 2019
Probing diffractive production of gauge bosons at forward rapidities journal December 2016
Precision measurement and interpretation of inclusive $$W^+$$ W + , $$W^-$$ W - and $$Z/\gamma ^*$$ Z / γ ∗ production cross sections with the ATLAS detector journal June 2017
The transverse momentum spectrum of weak gauge bosons at N$${}^3$$3LL + NNLO journal October 2019
Probing the diffractive production of gauge bosons at forward rapidities text January 2016


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