Abstract

Suppression of quarkonium production in heavy-ion collisions due to Debye color screening of quark and antiquark potential in the deconfined medium, has been proposed as a signature of quark-gluon plasma (QGP) formation. Since the Debye screening length depends on the temperature attained by the QGP medium, systematic measurements of production of various quarkonium states can provide insight into thermodynamic properties of the QGP. However, there are other effects that may alter the observed yields, such as cold nuclear matter effects (CNM) including shadowing/anti-shadowing of parton distribution functions and final state nuclear absorption, and statistical coalescence of quark-antiquark pairs in the QGP. Measurements of J/ψ yields at different collision energies, collision systems, and centralities help to disentangle the interplay of these effects on the J/ψ production.

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