Measurement of the production and lepton charge asymmetry of W bosons in Pb plus Pb collisions at root s(NN)=2.76 TeV with the ATLAS detector
Number of Authors: 2892
2015 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 75, no 1, 23Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2015. Vol. 75, no 1, 23
IdentifiersURN: urn:nbn:se:uu:diva-258933DOI: 10.1140/epjc/s10052-014-3231-6ISI: 000348992600002OAI: oai:DiVA.org:uu-258933DiVA: diva2:842679
ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1140/epjc/s10052-014-3231-62015-07-212015-07-212015-07-21Bibliographically approved