Z Boson Production in p + Pb Collisions at √s[subscript NN] = 5.02 TeV Measured with the ATLAS Detector
The ATLAS Collaboration measures the inclusive production of Z bosons via their decays into electron and muon pairs in p + Pb collisions at √s[subscript 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[supe...
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| Format: | Article |
| Language: | en_US |
| Published: |
2016
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| Online Access: | http://hdl.handle.net/1721.1/101020 https://orcid.org/0000-0002-7586-7253 |
| Summary: | The ATLAS Collaboration measures the inclusive production of Z bosons via their decays into electron and muon pairs in p + Pb collisions at √s[subscript 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[superscript −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 |y[∗ over Z]| < 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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