Prompt and non-prompt J/ψ production in pp collisions at √s = 7 TeV
Author(s)
Alver, Burak Han; Bauer, Gerry P; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Dutta, Valentina; Everaerts, Pieter Bruno Bart; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Harris, Philip Coleman; Klute, Markus; Lee, Yen-Jie; Li, W.; Loizides, Constantinos; Luckey Jr, P David; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Roland, Christof E; Roland, Gunther M; Rudolph, Matthew Scott; Stephans, George S. F.; Sumorok, Konstanty C; Sung, Kevin Kai Hong; Wenger, Edward Allen; Xie, Si; Yang, Mingming; Yilmaz, Yetkin; Yoon, Andrew; Zanetti, Marco; Chan, M.; Kim, Y.; ... Show more Show less
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The production of J/ψ mesons is studied in pp collisions at √s = 7 TeV with the CMS experiment at the LHC. The measurement is based on a dimuon sample corresponding to an integrated luminosity of 314 nb[superscript -1]. The J/ψ differential cross section is determined, as a function of the J/ψ transverse momentum, in three rapidity ranges. A fit to the decay length distribution is used to separate the prompt from the non-prompt (b hadron to J/ψ) component. Integrated over J/ψ transverse momentum from 6.5 to 30 GeV/c and over rapidity in the range |y| < 2.4, the measured cross sections, times the dimuon decay branching fraction, are 70.9 ± 2.1(stat.) ± 3.0(syst.) ± 7.8(luminosity) nb for prompt J/ψ mesons assuming unpolarized production and 26.0 ± 1.4(stat.) ± 1.6(syst.) ± 2.9(luminosity) nb for J/ψ mesons from b-hadron decays. © CERN for the benefit of the CMS collaboration 2011.
Date issued
2011-03Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
The European Physical Journal C
Publisher
Springer Nature
Citation
The CMS Collaboration, et al. “Prompt and Non-Prompt J/ψ Production in Pp Collisions at √s = 7 TeV.” The European Physical Journal C, vol. 71, no. 3, Mar. 2011.
Version: Final published version
ISSN
1434-6044
1434-6052