The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at root s(NN) = 5.02 TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward (4.46 < y(cms) < 2.96) and forward (2.03 < y(cms) < 3.53) rapidity regions, corresponding to Pb-going and p-going directions, respectively. The Z-boson production cross section, with dimuon invariant mass of 60 < m(mu mu) < 120 GeV/c(2) and muon transverse momentum (p(T)(mu)) larger than 20 GeV/c, is measured. The production cross section and charge asymmetry of muons from W-boson decays with p(T)(mu) > 10 GeV/c are determined. The results are compared to theoretical calculations both with and without including the nuclear modification of the parton distribution functions. The W-boson production is also studied as a function of the collision centrality: the cross section of muons from W-boson decays is found to scale with the average number of binary nucleon-nucleon collisions within uncertainties.
W and Z boson production in p-Pb collisions at √sNN=5.02 TeV / Adam, J.; Adamova, ; Aggarwal, D.; Rinella, G.; Agnello, Michelangelo; Agrawal, N; Ahammed, Z.; Ahn, S. U.; Aiola, S.; Bufalino, Stefania; Ravasenga, Ivan. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 77:2(2017), pp. 1-26.
|Titolo:||W and Z boson production in p-Pb collisions at √sNN=5.02 TeV|
|Data di pubblicazione:||2017|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1007/JHEP02(2017)077|
|Appare nelle tipologie:||1.1 Articolo in rivista|