Measurement of J/ψ and ψ(2S) prompt double-differential cross sections in pp collisions at √s = 7 TeV
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; Lai, Yue Shi; Lee, Yen-Jie; Levin, Andrew Michael; Paus, Christoph M. E.; Ralph, Duncan Kelley; Stephans, George S. F.; Velicanu, Dragos Alexandru; Veverka, Jan; Wyslouch, Boleslaw; Yang, Mingming; Zanetti, Marco; Luckey Jr, P David; Roland, Christof E; Roland, Gunther M; Sumorok, Konstanty C; Wyslouch, Victoria; ... Show more Show less
DownloadKhachatryan-2015-Measurement of J.pdf (402.0Kb)
PUBLISHER_POLICY
Publisher Policy
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.
Terms of use
Metadata
Show full item recordAbstract
The double-differential cross sections of promptly produced J/ψ and ψ(2S) mesons are measured in pp collisions at √s = 7 TeV, as a function of transverse momentum p[subscript T] and absolute rapidity |y|. The analysis uses J/ψ and ψ(2S) dimuon samples collected by the CMS experiment, corresponding to integrated luminosities of 4.55 and 4.90 fb[superscript −1], respectively. The results are based on a two-dimensional analysis of the dimuon invariant mass and decay length, and extend to p[subscript T] = 120 and 100 GeV for the J/ψ and ψ(2S), respectively, when integrated over the interval |y| < 1.2. The ratio of the ψ(2S) to J/ψ cross sections is also reported for |y| < 1.2, over the range 10 < p[subscript T] < 100 GeV. These are the highest p[subscript T] values for which the cross sections and ratio have been measured.
Date issued
2015-05Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of ScienceJournal
Physical Review Letters
Publisher
American Physical Society
Citation
Khachatryan, V., A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, J. Ero, et al. “Measurement of J/ψ and ψ(2S) Prompt Double-Differential Cross Sections in pp Collisions at √s = 7 TeV.” Physical Review Letters 114, no. 19 (May 2015). © 2015 CERN, for the CMS Collaboration
Version: Final published version
ISSN
0031-9007
1079-7114