Z boson production in p plus Pb collisions at root S-NN=5.02 TeV measured with the ATLAS detector
Number of Authors: 2856
2015 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 92, no 4, 044915Article in journal (Refereed) PublishedText
The ATLAS Collaboration measures the inclusive production of Z bosons via their decays into electron and muon pairs in p + Pb collisions at root S-NN = 5.02 TeV at the Large Hadron Collider. The measurements are made using data corresponding to integrated luminosities of 29.4 and 28.1 nb(-1) for Z -> ee and Z -> mu mu, respectively. The results from the two channels are consistent and combined to obtain a cross section times the Z -> ll branching ratio, integrated over the rapidity region vertical bar y(Z)*vertical bar < 3.5, of 139.8 +/- 4.8 (statistical) +/- 6.2 (systematic) +/- 3.8 (luminosity) nb. Differential cross sections are presented as functions of the Z boson rapidity and transverse momentum and compared with models based on parton distributions both with and without nuclear corrections. The centrality dependence of Z boson production in p + Pb collisions is measured and analyzed within the framework of a standard Glauber model and the model's extension for fluctuations of the underlying nucleon-nucleon scattering cross section.
Place, publisher, year, edition, pages
American Physical Society , 2015. Vol. 92, no 4, 044915
IdentifiersURN: urn:nbn:se:kth:diva-178789DOI: 10.1103/PhysRevC.92.044915ISI: 000363792100004ScopusID: 2-s2.0-84946771254OAI: oai:DiVA.org:kth-178789DiVA: diva2:878279
QC 201512082015-12-082015-12-082015-12-08Bibliographically approved