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J/ψ suppression in p-A and In-In collisions

Abstract : Results from the NA60 experiment on the J/ψ production are presented. We show that in In-In collisions there is an extra suppression of the J/ψ yield with respect to the expectations of the nuclear absorption. This suppression increases with the centrality of the collisions and it is dominant for low-pTJ/ψ. We also report on new results on the azimuthal J/ψ distributions in In-In collisions. For central collisions, these azimuthal distributions are compatible with an isotropic emission, while for peripheral events, and in particular at high transverse momentum, there is a clear signal of anisotropy, and the J/ψ are emitted preferentially within the reaction plane
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Contributor : Jeanine Pellet <>
Submitted on : Friday, April 3, 2009 - 3:01:32 PM
Last modification on : Thursday, February 25, 2021 - 10:58:21 AM

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R. Arnaldi, K. Banicz, K. Borer, J. Castor, B. Chaurand, et al.. J/ψ suppression in p-A and In-In collisions. 20th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions: Quark Matter 2008 (QM2008), Feb 2008, Jaipur, India. pp.104133, ⟨10.1088/0954-3899/35/10/104133⟩. ⟨in2p3-00373165⟩



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