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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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Veröffentlicht in: | The European physical journal / C 77(2017,6) Artikel-Nummer 392, 21 Seiten |
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Titel: | Energy dependence of forward-rapidity J/[psi] and [psi](2S) production in pp collisions at the LHC/ ALICE Collaboration* |
Format: | E-Book-Kapitel |
Sprache: | Englisch |
veröffentlicht: |
14 June 2017
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Gesamtaufnahme: |
: The European physical journal / C, 77(2017,6) Artikel-Nummer 392, 21 Seiten
, volume:77 |
Quelle: | Verbunddaten SWB Lizenzfreie Online-Ressourcen |
Zusammenfassung: | 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. |
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Beschreibung: |
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 |
Umfang: | 21 |
ISSN: |
1434-6052
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DOI: | 10.1140/epjc/s10052-017-4940-4 |