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J/$\psi$ production at high transverse momenta in p+p and Au+Au collisions at sqrt(s_(NN)) = 200 GeV
Adamczyk L., Borowski W., Kabana S.
Physics Letters B 722 (2013) 55-62 - http://hal.in2p3.fr/in2p3-00724003
Physique/Physique des Hautes Energies - Expérience
Physique/Physique Nucléaire Expérimentale
J/$\psi$ production at high transverse momenta in p+p and Au+Au collisions at sqrt(s_{NN}) = 200 GeV
L. Adamczyk, W. Borowski1, S. Kabana1
1 :  SUBATECH - Laboratoire SUBATECH Nantes
http://www-subatech.in2p3.fr/
CNRS : UMR6457 – IN2P3 – Université de Nantes – École Nationale Supérieure des Mines - Nantes
4, rue Alfred Kastler - 44070 Nantes Cedex 03
France
We report $J/\psi$ spectra for transverse momenta $p_T$> 5 GeV/$c$ at mid-rapidity in p+p and Au+Au collisions at sqrt(s_{NN}) = 200 GeV.The inclusive $J/\psi$ spectrum and the extracted $B$-hadron feed-down are compared to models incorporating different production mechanisms. We observe significant suppression of the $J/\psi$ yields for $p_T$> 5 GeV/$c$ in 0-30% Au+Au collisions relative to the p+p yield scaled by the number of binary nucleon-nucleon collisions in Au+Au collisions. In 30-60% collisions, no such suppression is observed.The level of suppression is consistently less than that of high-$p_T$ $\pi^{\pm}$ and low-$p_T$ $J/\psi$.
STAR

Articles dans des revues avec comité de lecture
2013
Physics Letters B (Phys. Lett. B)
Publisher Elsevier
ISSN 0370-2693 
722
55-62

SUBATECH-Plasma
see paper for full list of authors
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/1208.2736