Measurement of forward Z → e[superscript +]e[superscript −] production at √s = 8 TeV
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Aaij-2015-Measurement of forwa.pdf
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Author(s)
Counts, Ian Thomas Hunt
Williams, Michael
Ilten, Philip J
Date Issued
May 2015
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag
Citation
Aaij, R., B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, et al. “Measurement of Forward Z → e[superscript +]e[superscript −] Production at √s = 8 TeV.” J. High Energ. Phys. 2015, no. 5 (May 2015). © CERN, for the benefit of the LHCb Collaboration
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Final published version
Abstract
A measurement of the cross-section for Z-boson production in the forward region of pp collisions at 8 TeV centre-of-mass energy is presented. The measurement is based on a sample of Z → e[superscript +]e[superscript −] decays reconstructed using the LHCb detector, corresponding to an integrated luminosity of 2.0 fb[superscript −1]. The acceptance is defined by the requirements 2.0 < η < 4.5 and p [subscript T] > 20 GeV for the pseudorapidities and transverse momenta of the leptons. Their invariant mass is required to lie in the range 60-120 GeV. The cross-section is determined to be
σ(pp → Z → e[superscript +]e[superscript −]) = 93.81 ± 0.41(stat) ± 1.48(syst) ± 1.14(lumi) pb, where the first uncertainty is statistical and the second reflects all systematic effects apart from that arising from the luminosity, which is given as the third uncertainty. Differential cross-sections are presented as functions of the Z-boson rapidity and of the angular variable ϕ [superscript ∗], which is related to the Z-boson transverse momentum.
σ(pp → Z → e[superscript +]e[superscript −]) = 93.81 ± 0.41(stat) ± 1.48(syst) ± 1.14(lumi) pb, where the first uncertainty is statistical and the second reflects all systematic effects apart from that arising from the luminosity, which is given as the third uncertainty. Differential cross-sections are presented as functions of the Z-boson rapidity and of the angular variable ϕ [superscript ∗], which is related to the Z-boson transverse momentum.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1007/jhep05(2015)109
