Measurement of Z Boson Production in Pb-Pb Collisions at root s(NN)=2.76 TeV with the ATLAS Detector
2013 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 110, no 2, 022301- p.Article in journal (Refereed) Published
The ATLAS experiment has observed 1995 Z boson candidates in data corresponding to 0.15 nb(-1) of integrated luminosity obtained in the 2011 LHC Pb + Pb run at root s(NN) = 2.76 TeV. The Z bosons are reconstructed via dielectron and dimuon decay channels, with a background contamination of less than 3%. Results from the two channels are consistent and are combined. Within the statistical and systematic uncertainties, the per-event Z boson yield is proportional to the number of binary collisions estimated by the Glauber model. The elliptic anisotropy of the azimuthal distribution of the Z boson with respect to the event plane is found to be consistent with zero. DOI: 10.1103/PhysRevLett.110.022301
Place, publisher, year, edition, pages
2013. Vol. 110, no 2, 022301- p.
IdentifiersURN: urn:nbn:se:su:diva-87662DOI: 10.1103/PhysRevLett.110.022301ISI: 000313336500004OAI: oai:DiVA.org:su-87662DiVA: diva2:606223