Measurement of the production and lepton charge asymmetry of $\textit{W}$ bosons in Pb+Pb collisions at $\sqrt{s_{\mathrm{\mathbf{NN}}}}=$ 2.76 TeV with the ATLAS detector

• Published in: The European physical journal. C, Particles and fields Particles and fields, 2015, Vol.75 (1)
• Main Authors: 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., Liao, H., Pallin, D., Paredes Hernández, Daniela, Podlyski, F., Santoni, C., Theveneaux-Pelzer, Timothée, Valery, Loïc, Vazeille, F., Abdel Khalek, S., Bassalat, A., Becot, C., Binet, S., Bourdarios, C., Charfeddine, D., de Vivie de Regie, J.B., Duflot, L., Escalier, M., Fayard, L., Fournier, D., Grivaz, J.-F., Guillemin, T., Hariri, F., Henrot-Versillé, S., Hrivnac, J., Iconomidou-Fayard, L., Kado, M., Lounis, A., Makovec, N., Poggioli, L., Puzo, P., Renaud, A., Rousseau, D., Rybkin, G., Schaffer, A.C., Scifo, E., Serin, L., Simion, S., Tanaka, R., Tran, H.L., Zerwas, D., Zhang, Z., Alio, L., Barbero, M., Bertella, C., Clémens, J. C., Coadou, Y., Diglio, Sara, Djama, F., Feligioni, L., Hoffmann, D., Hubaut, F., Knoops, E. B. F. G., Le Guirriec, E., Li, B., Madaffari, D., Mochizuki, K., Monnier, E., Muanza, S., Nagai, Y., Pralavorio, P., Rozanov, A., Serre, T., Talby, M., Tiouchichine, E., Tisserant, S., Toth, J., Touchard, F., Ughetto, M., Vacavant, L., Barnovska, Z., Berger, N.
• Format: Article
• Language: English
• Subjects: High Energy Physics - Experiment; Nuclear Experiment; Physics
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-014-3231-6

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.