CERN Accelerating science

Article
Report number arXiv:2103.14089 ; CMS-HIN-19-003 ; CERN-EP-2021-039 ; CMS-HIN-19-003-003
Title Constraints on the Initial State of Pb-Pb Collisions via Measurements of Z-Boson Yields and Azimuthal Anisotropy at sNN=5.02  TeV
Related titleHigh precision measurements of Z boson production in PbPb collisions at sNN= 5.02 TeV
Author(s) CMS Collaboration  ყველა 2370 ავტორის ჩვენება
Corporate Author(s) CMS Collaboration
Publication 2021-08-31
Imprint 25 Mar 2021
Number of pages 19
Note Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIN-19-003 (CMS Public Pages)
In: Phys. Rev. Lett. 127 (2021) 102002
DOI 10.1103/PhysRevLett.127.102002 (publication)
Subject category Nuclear Physics - Experiment ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; CMS
Free keywords relativistic heavy ion physics
Abstract The CMS experiment at the LHC has measured the differential cross sections of Z bosons decaying to pairs of leptons, as functions of transverse momentum and rapidity, in lead-lead collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measured Z boson elliptic azimuthal anisotropy coefficient is compatible with zero, showing that Z bosons do not experience significant final-state interactions in the medium produced in the collision. Yields of Z bosons are compared to Glauber model predictions and are found to deviate from these expectations in peripheral collisions, indicating the presence of initial collision geometry and centrality selection effects. The precision of the measurement allows, for the first time, for a data-driven determination of the nucleon-nucleon integrated luminosity as a function of lead-lead centrality, thereby eliminating the need for its estimation based on a Glauber model.
Related document supersedes: CMS-PAS-HIN-19-003
Copyright/License publication: © 2021-2024 CERN (License: CC BY 4.0)
preprint: © 2021-2024 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: cms-publication-committee-chair@cern.ch


 ჩანაწერი შექმნილია 2021-03-25, ბოლოს შესწორებულია 2024-12-04


სრული ტექსტი:
2103.14089 - სრული ტექსტის ჩამოტვირთვაPDF
PhysRevLett.127.102002 - სრული ტექსტის ჩამოტვირთვაPDF
fermilab-pub-21-399-cms - სრული ტექსტის ჩამოტვირთვაPDF
გარე ბმული:
სრული ტექსტის ჩამოტვირთვაFermilab Accepted Manuscript
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