(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
• E-Jahr: 2000
• Jahr: 29 September 2000
• Umfang: 7 S.
• Fussnoten: Im Titel wird psi als griechischer Buchstabe dargestellt ; Gesehen am 26.02.2020
• Titel Quelle: Enthalten in: Physics letters / B
• Ort Quelle: Amsterdam : North-Holland Publ., 1967
• Jahr Quelle: 2000
• Band/Heft Quelle: 490(2000), 3, Seite 196-202
• ISSN Quelle: 1873-2445
• DOI: doi:10.1016/S0370-2693(00)00991-6
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1570385904

Abstract

To investigate a recent proposal that J/ψ 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 ψ′/(J/ψ) 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.