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Publications de SUBATECH |  |
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Publications de SUBATECH | |
| HAL: in2p3-00724003, version 1 |
| arXiv: 1208.2736 |
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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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| L. AdamczykW. Borowski1S. Kabana1 |
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| For the STAR collaboration(s) |
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| (2012) |
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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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| 1: | SUBATECH - Laboratoire SUBATECH Nantes |
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| Subject(s) | : | Physics/High Energy Physics - Experiment Physics/Nuclear Experiment |
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| Fulltext link: |
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| http://fr.arXiv.org/abs/1208.2736 |
| in2p3-00724003, version 1 | |
| http://hal.in2p3.fr/in2p3-00724003 | |
| oai:hal.in2p3.fr:in2p3-00724003 | |
| From: Dominique Girod | |
| Submitted on: Thursday, 16 August 2012 13:13:38 | |
| Updated on: Friday, 17 August 2012 10:43:49 | |
