Publication : t96/039
$J/\psi$ Suppression in Pb-Pb collisions: a hint of quark-gluon plasma production?
Blaizot J.-P. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE)Ollitrault J.-Y. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE)
Abstract:Année de publication : 1996
The NA50 Collaboration has recently observed a strong suppression of $J/\Psi$ production in Pb--Pb collisions at 158 Gev/n. We show that this recent observation finds a quantitative explanation in a model which relates the suppression mechanism to the local energy density, whose value is higher in Pb--Pb collisions than in any other system studied previously. The sensitivity of the phenomenon to small changes in the energy density could be suggestive of quark-gluon plasma formation.
Revue : Phys. Rev. Lett. 77 1703-1706 (1996)
Preprint : arXiv:hep-ph/9606289
Lien : http://link.aps.org/abstract/PRL/v77/p1703
PACS : 13.38.Mh, 25.75.q
Langue : Anglais
Fichier(s) à télécharger :
publi.pdf
