$Z$ boson production in $p+$Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV measured with the ATLAS detector - INSPIRE

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$Z$ boson production in $p+$ Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV measured with the ATLAS detector

ATLAS

Collaboration

Jul 22, 2015

22 pages

Published in:

Phys.Rev.C 92 (2015) 4, 044915

Published: Oct 30, 2015

e-Print:

1507.06232 [hep-ex]

DOI:

10.1103/PhysRevC.92.044915

Report number:

CERN-PH-EP-2015-146

Experiments:

CERN-LHC-ATLAS

View in:

reference search130 citations

Citations per year

Abstract: (APS)

The ATLAS Collaboration measures the inclusive production of Z bosons via their decays into electron and muon pairs in p+Pb collisions at sNN=5.02TeV 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→μμ, 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 |yZ*|<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.

Note:

20 pages plus author list (36 pages total), 9 figures, 3 tables, published version, all figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2013-09/

25.75.Bh
25.75.Dw
14.70.Hp
p nucleus: interaction
nucleon nucleon: scattering
lead: beam
vector boson: hadroproduction
Z0: hadroproduction
Z0: leptonic decay
model: Glauber

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