Yu. M. Sinyukov

Coherence influence on the Bose-Einstein correlations

Two-particle correlations for both like and unlike pion pars are considered using the method of ensemble of sources with partially random phases. The dependence of both the interferometric source size and the coherence parameter on the source size and on the meansquared momentum of the emitted pions is found.

Interferometry radii for expanding hadron resonance gas

Abstract We discuss the influence of the different physical factors on the interferometry radii of thermalized sources in A+A collisions. They are, first, non-Gaussian form of Bose-Einstein correlation function for direct pions at small p t , second, influence of the resonances, third, modification of the Gamov correction method for large expanding systems, including, particularly, specific role of long-lived resonances η, η′. Our results are based on the conception of the lengths of homogeneity.

DCC decay as possible mechanism of “pion laser” radiation

Abstract We analyze the possibility when a large enough phase-space densities as achieved at RHIC and LHC energies. If the pion classical field, associated with DCC, is presented in such a system, then an intensive coherent component could be observed in pion spectra, the Bose-Einstein correlations and N π 0 / N π tot distribution.

Hydrokinetic model of the matter evolution in A + A collisions at RHIC and LHC energies

Using the hydrokinetic model of pionic emission in heavy ion collisions, we study the effects of continuous particle emission for 3D azimuthal symmetric Bjorken-type expansion. We describe RHIC pion data in central A + A collisions and make predictions for LHC based on the hydrokinetic model and initial conditions taken from the color glass condensate model.

Interferometry search for new forms of matter in A+A collisions

A method allowing studies of the hadronic matter at the early evolution stage in A+A collisions is developed. It is based on an interferometry analysis of approximately conserved values such as the averaged phase-space density (APSD) and the specific entropy of thermal pions. The plateau found in the APSD behavior vs collision energy at SPS is associated, apparently, with the deconfinement phase transition at low SPS energies; a saturation of this quantity at the RHIC energies indicates the limiting Hagedorn temperature for hadronic matter.