Study of Drell-Yan dimuon production in proton-lead collisions at 8.16 TeV
Collaboration
47 pages
Published in:
- JHEP 05 (2021) 182
- Published: May 20, 2021
e-Print:
- 2102.13648 [hep-ex]
Report number:
- CMS-HIN-18-003,
- CERN-EP-2021-028
Experiments:
Citations per year
Abstract: (Springer)
Differential cross sections for the Drell-Yan process, including Z boson production, using the dimuon decay channel are measured in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of 8.16 TeV. A data sample recorded with the CMS detector at the LHC is used, corresponding to an integrated luminosity of 173 nb. The differential cross section as a function of the dimuon mass is measured in the range 15–600 GeV, for the first time in proton-nucleus collisions. It is also reported as a function of dimuon rapidity over the mass ranges 15–60 GeV and 60–120 GeV, and ratios for the p-going over the Pb-going beam directions are built. In both mass ranges, the differential cross sections as functions of the dimuon transverse momentum p and of a geometric variable ϕ are measured, where ϕ highly correlates with p but is determined with higher precision. In the Z mass region, the rapidity dependence of the data indicate a modification of the distribution of partons within a lead nucleus as compared to the proton case. The data are more precise than predictions based upon current models of parton distributions.[graphic not available: see fulltext]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-18-003 (CMS Public Pages)
- Hadron-Hadron scattering (experiments)
- Relativistic heavy ion physics
- dimuon: mass
- dimuon: mass spectrum
- Z0: hadroproduction
- Z0: leptonic decay
- differential cross section: mass: measured
- mass dependence
- rapidity dependence
- transverse momentum dependence
References(74)
Figures(30)
- [3]
- [10]
- [12]
- [13]
- [14]
- [15]
- [16]
- [19]