(Non)thermal aspects of charmonium production and a new look at [psi] suppression

• Verfasst von: Braun-Munzinger, Peter [VerfasserIn]
• Verfasst von: Stachel, Johanna [VerfasserIn]
• Titel: (Non)thermal aspects of charmonium production and a new look at [psi] suppression
• Verf.angabe: P. Braun-Munzinger, J. Stachel
• Jahr: 2000
• Umfang: 12 S.
• Fussnoten: Im Titel wird psi als griechischer Buchstabe dargestellt ; Gesehen am 26.02.2020
• Titel Quelle: Enthalten in: De.arxiv.org
• Ort Quelle: [S.l.] : Arxiv.org, 1991
• Jahr Quelle: 2000
• Band/Heft Quelle: (2000) Artikel-Nummer 0007059, 12 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: High Energy Physics - Phenomenology
• Sach-SW: Nuclear Theory
• Sach-SW: Nuclear Experiment
• K10plus-PPN: 1570386455

Abstract

To investigate a recent proposal that J/$\psi$ production in ultra-relativistic nuclear collisions is of thermal origin we have reanalyzed the data from the NA38/50 collaboration within a thermal model including charm. Comparison of the calculated with measured yields demonstrates the non-thermal origin of hidden charm production at SPS energy. However, the ratio $\psi^{'}$/(J/$\psi)$ exhibits, in central nucleus-nucleus collisions, thermal features which lead us to a new interpretation of open charm and charmonium production at SPS energy. Implications for RHIC and LHC energy measurements will be discussed.