Open AccessMeasurement of W-boson production in p–Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV with ALICE at the LHC
Author(s) -
J. Zhu
Publication year - 2015
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/612/1/012009
Subject(s) - physics , particle physics , muon , nuclear physics , large hadron collider , boson , electroweak interaction , luminosity , hadron , rapidity , parton , quantum mechanics , galaxy
6th Workshop on Young Scientists on the Physics of Ultrarelativistic Nucleus-Nucleus Collisions (Hot Quarks), Las Negras, SPAIN, SEP 21-28, 2014International audienceIn hadronic collisions, electroweak bosons are produced in initial hard scattering processes and they are not affected by the strong interaction. In proton proton collisions, they have been suggested as standard candles for luminosity monitoring and their measurement can improve the evaluation of detector performances. In nucleus-nucleus and proton nucleus collisions, W-bosons allow one to check at first order the validity of binary collision scaling, while small deviations allow to study the nuclear modifications of parton distribution functions. The W-boson production in p Pb collisions at root(NN)-N-S = 5.02 TeV is measured via the contribution of W-boson decays to the inclusive PT-differential muon yield reconstructed with the ALICE muon spectrometer at forward (2.03 < ems < 3.53) and backward (-4.46 < y(cms)(mu) < 2.96) rapidity. This paper reports the production cross section of muons from W-boson decays for p(T)(mu) > 10 GeV/c and the yields normalised to the average number of binary nucleon-nucleon collisions as a function of the event activity