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

Oh, Geonhee and Sirunyan, AM and Tumasyan, A and Choudhury, S (2019) Beyond nPDFs effects: Prompt J/psi and psi(2S) production in pPb and pp collisions. In: Nuclear Physics A, 982 . pp. 743-746.

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Official URL: https://doi.org/10.1016/j.nuclphysa.2018.10.028


A multi-dimensional analysis of prompt charmonia in pp and pPb collisions at root s(NN) = 5.02 TeV with the CMS detector is presented. The pPb differential cross-sections of prompt J/psi are shown in a wide kinematic region, for transverse momentum p(T) 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 psi/(2S) meson production cross section in pp and pPb collisions at 5.02 TeV are also reported as a function of p(T) and rapidity, for p(T) from 4 to 30 GeV/c. The nuclear modification factor is found to be smaller than that of prompt J/psi in all measured bins, especially at low p(T) and at backward rapidity. Such a different behaviour between the ground and excited states cannot be reproduced considering nPDF effects alone.

Item Type: Journal Article
Publication: Nuclear Physics A
Publisher: Elsevier
Additional Information: Copyright for this article belongs to Elsevier.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 06 Mar 2019 10:47
Last Modified: 06 Mar 2019 10:47
URI: http://eprints.iisc.ac.in/id/eprint/61914

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