Measurement of the prompt J/ψ and ψ(2S) polarizations in pp collisions at √s=7 TeV
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Date
2013-12
Publication Type
Journal Article
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yes
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Abstract
The polarizations of prompt J/ψ and ψ(2S) mesons are measured in proton-proton collisions at s=7 TeV, using a dimuon data sample collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.9 fb-1. The prompt J/ψ and ψ(2S) polarization parameters λθ{symbol}, λφ, and λθ{symbol}φ, as well as the frame-invariant quantity λ~, are measured from the dimuon decay angular distributions in three different polarization frames. The J/ψ results are obtained in the transverse momentum range 14
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published
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Volume
727 (4-5)
Pages / Article No.
381 - 402
Publisher
Elsevier
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Subject
CMS; Physics; Quarkonium production; Quarkonium polarization
Organisational unit
03381 - Pauss, Felicitas (emeritus)
03593 - Dissertori, Günther / Dissertori, Günther
03904 - Wallny, Rainer / Wallny, Rainer
08803 - Grab, Christoph (Tit.Prof.)