%0 Journal Article
%T Measurement of the Z boson production cross-section in pp collisions at √s=5.02 TeV
%A LHCb Collaboration (Aaij, R. et al
%A Jaimes Elles, S. J.
%A Jashal, B. K.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Rebollo De Miguel, M.
%A Ruiz Vidal, J.
%A Sanderswood, I.
%A Zhuo, J.
%J Journal of High Energy Physics
%D 2024
%V 02
%N 2
%I Springer
%@ 1029-8479
%G English
%F LHCbCollaborationAaij_etal2024
%O WOS:001164932500001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5974), last updated on Wed, 10 Apr 2024 12:47:11 +0000
%X The first measurement of the Z boson production cross-section at centre-of-mass energy v s = 5.02TeV in the forward region is reported, using pp collision data collected by the LHCb experiment in year 2017, corresponding to an integrated luminosity of 100 +/- 2 pb-1. The production cross-section is measured for final-state muons in the pseudorapidity range 2.0 <. < 4.5 with transverse momentum pT > 20 GeV/c. The integrated cross-section is determined to be sZ.mu+mu- = 39.6 +/- 0.7(stat) +/- 0.6(syst) +/- 0.8(lumi) pb for the di-muon invariant mass in the range 60 < M μμ< 120 GeV/c2. This result and the differential cross-section results are in good agreement with theoretical predictions at next-to-next-to-leading order in the strong coupling constant. Based on a previous LHCb measurement of the Z boson production cross-section in pPb collisions at v sNN = 5.02TeV, the nuclear modification factor RpPb is measured for the first time at this energy. The measured values are 1.2+0.5 -0.3(stat) +/- 0.1(syst) in the forward region (1.53 < y* μ< 4.03) and 3.6+1.6 -0.9(stat)+/- 0.2(syst) in the backward region (-4.97 < y* μ< -2.47), where y* μrepresents the muon rapidity in the centre-of-mass frame.
%K Electroweak Interaction
%K Hadron-Hadron Scattering
%K QCD
%R 10.1007/JHEP02(2024)070
%U https://arxiv.org/abs/2308.12940
%U https://doi.org/10.1007/JHEP02(2024)070
%P 070-38pp