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We present the spectra of negative charged particle production in Au+Aucollisions from STAR for the first phase of the RHIC Beam Energy Scan Programmeasured over a wide range of collision energy sqrt s{NN}=7.7-200 GeV, andtransverse momentum of produced particle in different centralities at|eta|<0.5. The spectra demonstrate strong dependence on collision energy whichenhances with pT. An indication of self-similarity of negative charged particleproduction in Au+Au collisions is found. The constituent energy loss as afunction of energy and centrality of collisions and transverse momentum ofinclusive particle was estimated in the $z$-scaling approach. The energydependence of the model parameters - the fractal and fragmentation dimensionsand "specific heat", was studied.

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