Beyond nPDFs effects : Prompt J/psi and psi(2S) production in pPb and pp collisions

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Author
Date
2019-02Type
- Journal Article
ETH Bibliography
yes
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Abstract
A multi-dimensional analysis of prompt charmonia in pp and pPb collisions at sNN=5.02 TeV with the CMS detector is presented. The pPb differential cross-sections of prompt J/ψ are shown in a wide kinematic region, for transverse momentum pT spanning from 2 to 30 GeV/c and a rapidity interval between -2.4 to 1.93 in the center of mass of the collision. The final results on prompt ψ(2S) meson production cross section in pp and pPb collisions at 5.02 TeV are also reported as a function of pT and rapidity, for pT from 4 to 30 GeV/c. The nuclear modification factor is found to be smaller than that of prompt J/ψ in all measured bins, especially at low pT and at backward rapidity. Such a different behaviour between the ground and excited states cannot be reproduced considering nPDF effects alone. Show more
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https://doi.org/10.3929/ethz-b-000328670Publication status
publishedExternal links
Journal / series
Nuclear Physics AVolume
Pages / Article No.
Publisher
ElsevierSubject
Quarkonia; Charmonia; Prompt J /ψ; Prompt ψ (2S); ProductionNotes
Author on behalf of the CMS CollaborationMore
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ETH Bibliography
yes
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