HAL : in2p3-00202683, version 1
 arXiv : 0801.0220
 Physical Review Letters 101 (2008) 122301
 $J/\psi$ Production in $\sqrt{s_{NN}}$= 200 GeV Cu+Cu Collisions
 PHENIX Collaboration(s)
 (2008)
 Yields for $/\psi$ production in Cu+Cu collisions at sqrt (s_NN)= 200 GeV have been measured by the PHENIX experiment over the rapidity range |y| < 2.2 at transverse momenta from 0 to beyond 5 GeV/c. The invariant yield is obtained as a function of rapidity, transverse momentum and collision centrality, and compared with results in p+p and Au+Au collisions at the same energy. The Cu+Cu data provide greatly improved precision over existing Au+Au data for $/\J/psi$ production in collisions with small to intermediate numbers of participants, providing a key constraint that is needed for disentangling cold and hot nuclear matter effects.
 Thème(s) : Physique/Physique Nucléaire Expérimentale
 Lien vers le texte intégral : http://fr.arXiv.org/abs/0801.0220
 in2p3-00202683, version 1 http://hal.in2p3.fr/in2p3-00202683 oai:hal.in2p3.fr:in2p3-00202683 Contributeur : Suzanne Robert <> Soumis le : Lundi 7 Janvier 2008, 17:06:16 Dernière modification le : Vendredi 25 Septembre 2009, 10:09:37