Z production in pPb collisions at LHCb

TL;DR

This paper reports measurements of Z boson production in proton-lead collisions at the LHC, providing high-precision data that align with theoretical predictions and can help refine nuclear parton distribution functions.

Contribution

It presents new high-precision measurements of Z boson production in pPb collisions at two different energies, contributing valuable data to constrain nuclear PDFs.

Findings

2016 data are compatible with nPDF predictions within uncertainties

High-precision measurements can help refine theoretical models

Results span forward and backward rapidity regions

Abstract

This article presents results of the Z boson production in the proton-lead collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV and $\sqrt{s_{\rm NN}}= 8.16$ TeV collected in 2013 and 2016, respectively, by the LHCb detector at the LHC in forward and backward rapidity. The great precision of the 2016 data are found compatible with nPDFs theoretical predictions within large theoretical uncertainties, and can be useful to constraint new predictions.