Study of production of (anti)deuteron observed in Au+Au collisions at SNN=14.5, 62.4 and 200 GeV
Abstract
Transverse momentum distributions of deuterons and anti-deuterons in Au+Au collisions at SNN=14.5, 62.4 and 200 GeV with different centrality are studied in the framework of the multisource thermal model. Transverse momentum spectra are conformably and approximately described by the Tsallis distribution. The dependence of parameters (average transverse momenta, effective temperature and entropy index) on event centrality are obtained. It is found that the parameters increase with increase of the average number of particles involved in collisions, which reveals the nuclear stopping degree increases with collision centrality.
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