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Title
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Beyond nPDFs effects : prompt and (2S) production in pPb and pp collisions
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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NUCLEAR PHYSICS A
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Publication
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2019
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DOI
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10.1016/J.NUCLPHYSA.2018.10.028
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Volume/pages
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982
(2019)
, p. 743-746
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ISI
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000457515500171
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Full text (Publisher's DOI)
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Full text (open access)
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