Angular coefficients of Z bosons produced in pp collisions at √s = 8 TeV and decaying to μ+μ− as a function of transverse momentum and rapidity

Khachatryan, V. and Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Bergauer, T. and Filipovic, Nicolas and Bencze, György and Hajdu, Csaba and Hidas, Pál and Horváth, Dezső and Siklér, Ferenc and Veszprémi, Viktor and Vesztergombi, György and Zsigmond, Anna Júlia and Karancsi, János and Molnár, József and Pálinkás, József and Makovec, Alajos and Trócsányi, Zoltán and Ujvári, Balázs and Veres, Gábor (2015) Angular coefficients of Z bosons produced in pp collisions at √s = 8 TeV and decaying to μ+μ− as a function of transverse momentum and rapidity. PHYSICS LETTERS B, 750. pp. 154-175. ISSN 0370-2693

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Abstract

Measurements of the five most significant angular coefficients, A0 through A4, for Z bosons produced in pp collisions at √s = 8 TeV and decaying to μ+μ− are presented as a function of the transverse momentum and rapidity of the Z boson. The integrated luminosity of the dataset collected with the CMS detector at the LHC corresponds to 19.7 fb−1. These measurements provide comprehensive information about the Z boson production mechanisms, and are compared to the QCD predictions at leading order, next-to-leading order, and next-to-next-to-leading order in perturbation theory.

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