Study of final-state radiation in decays of Z bosons produced in pp collisions at 7 TeV
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Khachatryan-2015-Study of final-state.pdf
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Author(s)
Apyan, Aram
Barbieri, Richard Alexander
Bierwagen, Katharina
Busza, Wit
Cali, Ivan Amos
Di Matteo, Leonardo
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Gulhan, Doga Can
Klute, Markus
Date Issued
May 2015
Journal
Physical Review D
Publisher
American Physical Society
Citation
Khachatryan, V., A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, J. Ero, et al. “Study of Final-State Radiation in Decays of Z Bosons Produced in P P Collisions at 7 TeV.” Physical Review D 91, no. 9 (May 29, 2015). © 2015 CERN, for the CMS Collaboration
Version
Final published version
Abstract
The differential cross sections for the production of photons in Z → μ[superscript +]μ[superscript −]γ decays are presented as a function of the transverse energy of the photon and its separation from the nearest muon. The data for these measurements are collected with the CMS detector and correspond to an integrated luminosity of 4.7 fb[superscript −1] of pp collisions at √s = 7 TeV delivered by the CERN LHC. The cross sections are compared to simulations with powheg and pythia, where pythia is used to simulate parton showers and final-state photons. These simulations match the data to better than 5%.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. School of Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.91.092012
