Study of strange particle p(T) spectra in relativistic heavy-ion collisions with blast-wave model

Boltzmann Gibbs blast-wave model was used to analyze the transverse momentum distributions of strange hadrons (K+, K-, K-S(0), Lambda, (Lambda) over bar, Xi(-), Xi(+), phi, Omega(-), and (Omega) over bar+) produced in most central A u+Au collisions at RHIC-BES energies. The kinetic freeze-out parameters for energies root s(NN) = 7.7, 11.5, 19.6, 27 and 39 GeV are presented and discussed as a function of collision energy. The K+, K-, K-S(0), Lambda, (Lambda) over bar, Xi(-), Xi(+), phi, Omega(-), and (Omega) over bar+) BGBW fit results are similar within errors with the kinetic freeze-out parameters of bulk hadrons (pi(+/-), K-+/-, p and (p) over bar). The multi-strange kinetic freeze-out parameters indicate that these hadrons tend to decouple earlier from the system than the bulk hadrons, having a smaller average transverse flow velocity.