Self-similarity of negative particle production from the Beam Energy Scan Program at STAR

Abstract

We present the spectra of negative charged particle production in Au [Formula: see text] Au collisions from STAR for the first phase of the RHIC Beam Energy Scan Program measured over a wide range of collision energy [Formula: see text], and transverse momentum of produced particle in different centralities at [Formula: see text]. The spectra demonstrate strong dependence on collision energy which enhances with [Formula: see text]. An indication of self-similarity of negative charged particle production in Au [Formula: see text] Au collisions is found. The constituent energy loss as a function of energy and centrality of collisions and transverse momentum of inclusive particle was estimated in the [Formula: see text]-scaling approach. The energy dependence of the model parameters - the fractal and fragmentation dimensions and “specific heat”, was studied.