Abstract
High-energy nuclear collisions provide a unique tool to study a strongly interacting medium. Recent results from the Relativistic Heavy Ion Collider (RHIC) on ϕ-meson production have revealed the formation of a dense partonic medium. The medium constituents are found to exhibit collective behaviour initiated due to partonic interactions in the medium. We present a brief review of the recent results on ϕ production in heavy-ion collisions at the RHIC. One crucial question is where, in the phase diagram, does the transition happen for the matter changing from hadronic to partonic degrees of freedom. We discuss how the ϕ-meson elliptic flow in heavy-ion collisions can be used for the search of the QCD phase boundary.
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More From: Journal of Physics G: Nuclear and Particle Physics
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