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Energy dependence of forward-rapidity J/[psi] and [psi](2S) production in pp collisions at the LHC

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We present results on transverse momentum (pTpTp_{\mathrm {\textsc {t}}}) and rapidity (yyy) differential production cross sections, mean transverse momentum and mean transverse momentum square of inclusive J/ψJ/ψ\mathrm {J}/\psi and ψ(2S)ψ(2S)\psi \mathrm {(2S)} at forward rapidity (2.5<y<42....

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Main Authors: Acharya, Shreyasi (Author) , Angelov, Venelin (Author) , Arslandok, Mesut (Author) , Danisch, Meike (Author) , Deisting, Alexander (Author) , Glässel, Peter (Author) , Kim, Jiyoung (Author) , Klewin, Sebastian (Author) , Leardini, Lucia (Author) , Mercado Pérez, Jorge (Author) , Oeschler, Helmut (Author) , Ohlson, Alice (Author) , Pachmayer, Yvonne C. (Author) , Reygers, Klaus (Author) , Schicker, Rainer (Author) , Schmidt, Marten Ole (Author) , Stachel, Johanna (Author) , Weiser, Dennis (Author) , Wilkinson, Jeremy (Author) , Windelband, Bernd (Author) , Zimmermann, Alice (Author)
Corporate Author: ALICE (Author)
Format: Article (Journal)
Language:English
Published: 14 June 2017
In: The European physical journal. C, Particles and fields
Year: 2017, Volume: 77, Issue: 6
ISSN:1434-6052
DOI:10.1140/epjc/s10052-017-4940-4
Online Access:Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1140/epjc/s10052-017-4940-4
Verlag, kostenfrei, Volltext: https://doi.org/10.1140/epjc/s10052-017-4940-4
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Author Notes:ALICE Collaboration*
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Summary:We present results on transverse momentum (pTpTp_{\mathrm {\textsc {t}}}) and rapidity (yyy) differential production cross sections, mean transverse momentum and mean transverse momentum square of inclusive J/ψJ/ψ\mathrm {J}/\psi and ψ(2S)ψ(2S)\psi \mathrm {(2S)} at forward rapidity (2.5<y<42.5<y<42.5<y<4) as well as ψ(2S)ψ(2S)\psi \mathrm {(2S)}-to-J/ψJ/ψ\mathrm {J}/\psi cross section ratios. These quantities are measured in pp collisions at center of mass energies s√=5.02s=5.02\sqrt{s}\,=5.02 and 13 TeV with the ALICE detector. Both charmonium states are reconstructed in the dimuon decay channel, using the muon spectrometer. A comprehensive comparison to inclusive charmonium cross sections measured at s√=2.76s=2.76\sqrt{s}\,=2.76, 7 and 8 TeV is performed. A comparison to non-relativistic quantum chromodynamics and fixed-order next-to-leading logarithm calculations, which describe prompt and non-prompt charmonium production respectively, is also presented. A good description of the data is obtained over the full pTpTp_{\mathrm {\textsc {t}}} range, provided that both contributions are summed. In particular, it is found that for pT>15pT>15p_{\mathrm {\textsc {t}}}>15 GeV/c the non-prompt contribution reaches up to 50% of the total charmonium yield.
Item Description:Im Titel wird "psi" als griechischer Buchstabe dargestellt
The ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, A. Deisting, P. Glässel, J. Kim, S. Klewin, L. Leardini, J. Mercado Pérez, H. Oeschler, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, M.O. Schmidt, J. Stachel, D.F. Weiser, J. Wilkinson, B. Windelband, A. Zimmermann [und weitere]
Gesehen am 28.09.2018
Physical Description:Online Resource
ISSN:1434-6052
DOI:10.1140/epjc/s10052-017-4940-4

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