Speaker
志永 卢
(清华大学)
Description
W and Z bosons are produced in the initial stage partonic hard scatterings in high energy hadronic and heavy-ion collisions. The measurement of W and Z bosons production in p-Pb and Pb-Pb collisions at the LHC energies provide constraints on the nuclear modified parton distribution function (PDF) in a phase-space region that is hardly accessed by previous experiments. Production of W and Z bosons are measured via muonic decays at forward rapidity (2.5 < $y_{lab}$ < 4), in p-Pb and Pb-Pb collisions with ALICE detectors. The results provide a clear picture of the initial state to interpret the later stages characterising the complex the evolution of p-Pb and Pb-Pb collision systems.
In this report, recent measurements on the production of Z and W bosons in p-Pb and Pb-Pb collisions at central-of-mass energy of 8.16 and 5.02 TeV will be, respectively, presented. The invariant production yield and the nuclear modification factor as a function of rapidity and collision centrality are demonstrated and compared to that from other LHC experiments along with predictions with and without considering the nuclear modifications on the PDF.
Primary authors
Mingrui Zhao
(China Institute of Atomic Energy)
志永 卢
(清华大学)
