Hot Quarks 2014

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

22 Sept 2014, 11:20

20m

Experimental Initial state effects and Color Glass Condensate Session 1

Speaker

Jianhui Zhu (Central China Normal University CCNU (CN))

Description

In hadronic collisions, W bosons are produced in initial hard scattering processes and they are not affected by the strong interaction. They have been suggested as standard candles for luminosity measurements and their measurement can improve the evaluation of detector performances. In nucleus-nucleus and proton-nucleus collisions, W bosons allow one to check the validity of binary collision scaling and to study the nuclear modification of parton distribution functions. The production of W bosons in p--Pb collisions at $\sqrt{{\mathrm{s}}_{\mathrm{N}\mathrm{N}}}=5.02$ TeV is measured via the contribution of W decays to the inclusive $p_T$-differential muon yield reconstructed with the ALICE muon spectrometer at forward ($2.03<y_{\mathrm{c}\mathrm{m}\mathrm{s}}^{\mu }<3.53$) and backward ($-4.46<y_{\mathrm{c}\mathrm{m}\mathrm{s}}^{\mu }<-2.96$) rapidity. After a presentation of the motivation for the study of W bosons and a description of the ALICE muon spectrometer, the latest results on W-boson production at forward and backward rapidity in p--Pb collisions will be shown and discussed.

Presentation materials

Slides

HotQuarks2014_Jianhui_v7.pdf

Peer reviewing

Paper

Accepted on 1 Feb 2015 by Raphael Granier De Cassagnac

HQ2014_proceeding_Jianhui_v12.pdf