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| Titre : |
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J/$\psi$ production at high transverse momenta in p+p and Au+Au collisions at sqrt(s_{NN}) = 200 GeV |
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| Auteur : |
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L. Adamczyk, W. Borowski1, S. Kabana1 |
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| Laboratoire : |
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| Résumé : |
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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-$p_T$ $J/\psi$. |
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| Collaboration/Projet : |
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STAR |
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| Type de publication : |
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Pré-publications |
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Date de publication
ou d'écriture : |
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2012 |
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| Identifiant local : |
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SUBATECH-Plasma |
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| Commentaire : |
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see paper for full list of authors |
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