Formation of light antinuclei and "dense gas" stage in heavy ion collisions Original Research Article

The antideuteron and antihelium-3 production rates at high-energy heavy ion collisions are calculated in the framework of fusion mechanism. It is supposed, that View the MathML source participating in the fusion are moving in the mean field of other fireball constituents. It is demonstrated that at the "dense gas" stage of fireball evolution, preceding the thermal freeze-out, the coalescence parameters for View the MathML source and View the MathML source can be found from the requirement of balance between created and disintegrated antinuclei. The explicit formulae for coalescence parameters are presented and compared with the data.