Auteur(s): Aad G., Albrand S., Brown J., Collot J., Crépé-Renaudin S., Dechenaux B., Delsart P.A., Gabaldon C., Genest M.H., Hostachy J.Y., Ledroit-Guillon F., Lleres A., Lucotte A., Malek F., Monini C., Stark J., Trocmé B., Wu M., Rahal G., Boumediene D., Busato Emmanuel, Calvet D., Calvet S., Donini J., Dubreuil E., Ghodbane N., Gilles G., Gris Ph., Guicheney C., Ughetto M.
(Article) Publié:
European Physical Journal C, vol. 75 p.23 (2015)
Texte intégral en Openaccess : 
Ref Arxiv: 1408.4674
DOI: 10.1140/epjc/s10052-014-3231-6
WoS: 000348992600002
Ref. & Cit.: NASA ADS
32 Citations
Résumé:
A measurement of $\textit{W}$ boson production in lead-lead collisions at $\sqrt{s_{\mathrm{NN}}}=$2.76 TeV is presented. It is based on the analysis of data collected with the ATLAS detector at the LHC in 2011 corresponding to an integrated luminosity of 0.14 $\mathrm{nb}^{-1}$ and 0.15 $\mathrm{nb}^{-1}$ in the muon and electron decay channels, respectively. The differential production cross-sections and lepton charge asymmetry are each measured as a function of the average number of participating nucleons $\langle N_{\mathrm{part}} \rangle$ and absolute pseudorapidity of the charged lepton. The results are compared to predictions based on next-to-leading-order QCD calculations. These measurements are, in principle, sensitive to possible nuclear modifications to the parton distribution functions and also provide information on scaling of $\textit{W}$ boson production in multi-nucleon systems.
Commentaires: See paper for full list of authors - 18 pages plus author list + cover pages (33 pages total), 11 figures, 5 tables, submitted to EPJC, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2013-05/