Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/106549
Title: | Z boson production in Pb+Pb collisions at √Snn = 5.02 TeV measured by the ATLAS experiment | Authors: | Fiolhais, M. C. N. Veloso, F. Wolters, H. ATLAS Collaboration |
Issue Date: | 2020 | Publisher: | Elsevier | Serial title, monograph or event: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Volume: | 802 | Abstract: | The production yield of Z bosons is measured in the electron and muon decay channels in Pb+Pb collisions at √Snn = 5.02 TeV with the ATLAS detector. Data from the 2015 LHC run corresponding to an integrated luminosity of 0.49 nb-1 are used for the analysis. The Z boson yield, normalised by the total number of minimum-bias events and the mean nuclear thickness function, is measured as a function of dilepton rapidity and event centrality. The measurements in Pb+Pb collisions are compared with similar measurements made in proton-proton collisions at the same centre-of-mass energy. The nuclear modification factor is found to be consistent with unity for all centrality intervals. The results are compared with theoretical predictions obtained at next-to-leading order using nucleon and nuclear parton distribution functions. The normalised Z boson yields in Pb+Pb collisions lie 1-3σ above the predictions. The nuclear modification factor measured as a function of rapidity agrees with unity and is consistent with a next-to-leading-order QCD calculation including the isospin effect. | URI: | https://hdl.handle.net/10316/106549 | DOI: | 10.1016/j.physletb.2020.135262 | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Z boson production in Pb+Pb collisions at √Snn = 5.02 TeV measured by the ATLAS experiment.pdf | 1.75 MB | Adobe PDF | View/Open |
SCOPUSTM
Citations
23
checked on Apr 22, 2024
WEB OF SCIENCETM
Citations
23
checked on Apr 2, 2024
Page view(s)
23
checked on Apr 23, 2024
Download(s)
14
checked on Apr 23, 2024
Google ScholarTM
Check
Altmetric
Altmetric
This item is licensed under a Creative Commons License