Measurement of the production and lepton charge asymmetry of W bosons in Pb+Pb collisions at √s.sub.NN./sub. = 2.76 TeV with the ATLAS detector

0522341 - FZÚ 2020 RIV DE eng J - Journal Article
Aad, G. - Abbott, B. - Abdallah, J. - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … Total 2891 authors
Measurement of the production and lepton charge asymmetry of W bosons in Pb+Pb collisions at √s_NN = 2.76 TeV with the ATLAS detector.
European Physical Journal C. Roč. 75, č. 1 (2015), s. 1-30, č. článku 23. ISSN 1434-6044. E-ISSN 1434-6052
Institutional support: RVO:68378271
Keywords : ATLAS * CERN LHC Coll * quantum chromodynamics * rapidity dependence * scaling * 2760 GeV-cms/nucleon * experimental results
OECD category: Particles and field physics
Impact factor: 4.912, year: 2015
Method of publishing: Open access

A measurement of W boson production in lead-lead collisions at sNN−−−√=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 nb−1 and 0.15 nb−1 in the muon and electron decay channels, respectively. The differential production yields and lepton charge asymmetry are each measured as a function of the average number of participating nucleons ⟨Npart⟩ 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 W boson production in multi-nucleon systems.
Permanent Link: http://hdl.handle.net/11104/0306853