Measurement of W-boson production in p_Pb collisions at = 5.02 TeV with ALICE at the LHC

Hot Quarks 2014: Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions

Zhu, Jianhui^1,2

Key Laboratory of Quark and Lepton Physics (MOE), Institute of Particle Physics, Central China Normal University, Wuhan, China^1

SUBATECH, Ecole des Mines de Nantes, CNRS-IN2P3, Nantes, France^2

关键词: Detector performance;    Hadronic collisions;    Nuclear modification;    Nucleon-nucleon collisions;    Parton distribution functions;    Production cross section;    Scattering process;    Strong interaction;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/612/1/012009/pdf
DOI  :  10.1088/1742-6596/612/1/012009

来源: IOP

【 摘 要 】

In 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 √sNN= 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 μcmsμcmsμT> 10 GeV/c and the yields normalised to the average number of binary nucleon-nucleon collisions as a function of the event activity.