Anisotropic $J/Ψ$ suppression in nuclear collisions

Details Anisotropic $J/Ψ$ suppression in nuclear collisions Anisotropic $J/Ψ$ suppression in nuclear collisions

1999-01-04

arxiv.org/abs/nucl-th/9901004v2

Physics

Nuclear Physics

Nuclear Theory

Revised and extended version, new figures

Scientific paper

10.1103/PhysRevC.60.044902

The nuclear overlap zone in non-central relativistic heavy ion collisions is azimuthally very asymmetric. By varying the angle between the axes of deformation and the transverse direction of the pair momenta, the suppression of $J/\Psi$ and $\Psi'$ will oscillate in a characteristic way. Whereas the average suppression is mostly sensitive to the early and high density stages of the collision, the amplitude is more sensitive to the late stages. This effect provides additional information on the $J/\Psi$ suppression mechanisms such as direct absorption on participating nucleons, comover absorption or formation of a quark-gluon plasma. The behavior of the average $J/\Psi$ suppression and its amplitude with centrality of the collisions is discussed for SPS, RHIC and LHC energies with and without a phase transition.

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