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Z boson production in p plus Pb collisions at root S-NN=5.02 TeV measured with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
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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) Published
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Abstract [en]

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.

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American Physical Society , 2015. Vol. 92, no 4, 044915
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Physical Sciences
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URN: urn:nbn:se:kth:diva-178789DOI: 10.1103/PhysRevC.92.044915ISI: 000363792100004Scopus ID: 2-s2.0-84946771254OAI: oai:DiVA.org:kth-178789DiVA: diva2:878279
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QC 20151208

Available from: 2015-12-08 Created: 2015-12-08 Last updated: 2017-12-01Bibliographically approved

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Strandberg, Jonas

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