Formation of antideuterons in heavy ion collisions

Abstract

The antideuteron production rate at high-energy heavy ions collisions is calculated basing on the concept of anti-d formation by antinucleons which move in the mean field of the fireball constituents (mainly pions). The explicit formula is presented for the coalescence parameter B_2 in terms of deuteron binding energy and fireball volume.Comment: 7 pages, 1 figure, latex. v3: argumentation improved, references adde