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Jun 24 – 28, 2019
US/Eastern timezone
5th International Conference on the Initial Stages in High-Energy Nuclear Collisions

Contraining nPDFs with Z boson and Drell-Yan measurements in pPb collisions with CMS

Jun 25, 2019, 2:40 PM
329 (Pupin)



Oral nPDF, cold matter effects Parallel: nPDF/CNM


Émilien Chapon (CERN)


Nuclear parton distribution functions (nPDFs) of quarks and antiquarks affect the production electroweak bosons in proton-lead (pPb) collision. In this presentation the measurement of Z bosons in pPb collision at center of mass energies of 5.02 TeV and 8.16 TeV with CMS is presented. The rapidity dependence is particularly sensitive to nPDFs, but further information can be gained by studying the mass dependence of DY production, measured for the first time in pPb collisions at 8.16 TeV, down to 15 GeV. In addition, differential measurements in the dimuon pt or $\phi^{*}$ (an angular variable correlated with pt, measured for the first time in pPb) provide insights on soft gluon emission at low pt. Finally, prospects on Z boson production with future HL-LHC data are presented.

Primary author

Sergey Petrushanko (Moscow State University)

Presentation materials