This article presents the first measurement of the differential Z-boson production cross-section in the forward region using proton-lead collisions with the LHCb detector. The dataset was collected at a nucleon-nucleon centre-of-mass energy of √s_NN = 8.16 TeV in 2016, corresponding to an integrated luminosity of 30.8 nb^−1. The forward-backward ratio and the nuclear modification factors are measured together with the differential cross-section as functions of the Z boson rapidity in the centre-of-mass frame, the transverse momentum of the Z boson and a geometric variable ϕ*. The results are in good agreement with the predictions from nuclear parton distribution functions, providing strong constraining power at small Bjorken-x.

Aaij R., Abdelmotteleb A.S.W., Abellan Beteta C., Abudinen F., Ackernley T., Adeva B., et al. (2023). Measurement of the Z Boson Production Cross-Section in Proton-Lead Collisions at √s_NN = 8.16 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2023(6), 0-36 [10.1007/JHEP06(2023)022].

Measurement of the Z Boson Production Cross-Section in Proton-Lead Collisions at √s_NN = 8.16 TeV

Carbone A.;Ferrari F.;Galli D.;Manuzzi D.;Patrignani C.;Villa A.;Zucchelli S.;
2023

Abstract

This article presents the first measurement of the differential Z-boson production cross-section in the forward region using proton-lead collisions with the LHCb detector. The dataset was collected at a nucleon-nucleon centre-of-mass energy of √s_NN = 8.16 TeV in 2016, corresponding to an integrated luminosity of 30.8 nb^−1. The forward-backward ratio and the nuclear modification factors are measured together with the differential cross-section as functions of the Z boson rapidity in the centre-of-mass frame, the transverse momentum of the Z boson and a geometric variable ϕ*. The results are in good agreement with the predictions from nuclear parton distribution functions, providing strong constraining power at small Bjorken-x.
2023
Aaij R., Abdelmotteleb A.S.W., Abellan Beteta C., Abudinen F., Ackernley T., Adeva B., et al. (2023). Measurement of the Z Boson Production Cross-Section in Proton-Lead Collisions at √s_NN = 8.16 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2023(6), 0-36 [10.1007/JHEP06(2023)022].
Aaij R.; Abdelmotteleb A.S.W.; Abellan Beteta C.; Abudinen F.; Ackernley T.; Adeva B.; Adinolfi M.; Afsharnia H.; Agapopoulou C.; Aidala C.A.; Aiola S...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/951727
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