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 √sNN = 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 crosssection 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). Measurement of the Z boson production cross-section in proton-lead collisions at √sNN = 8.16 TeV [journal article - articolo]. In JOURNAL OF HIGH ENERGY PHYSICS. Retrieved from https://hdl.handle.net/10446/263638
Measurement of the Z boson production cross-section in proton-lead collisions at √sNN = 8.16 TeV
Lupato, A.;Redi, F.;
2023-01-01
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 √sNN = 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 crosssection 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.File | Dimensione del file | Formato | |
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