Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-04-11
Int.J.Mod.Phys. E16 (2007) 133-148
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 pages, 5 figures and 6 tables
Scientific paper
Large transverse momentum distributions of identified particles observed at RHIC are analyzed by a relativistic stochastic model in the three dimensional (non-Euclidean) rapidity space. A distribution function obtained from the model is Gaussian-like in radial rapidity. It can well describe observed transverse momentum $p_T$ distributions. Estimation of radial flow is made from the analysis of $p_T$ distributions for $\bar{p}$ in Au + Au Collisions. Temperatures are estimated from observed large $p_T$ distributions under the assumption that the distribution function approaches to the Maxwell-Boltzmann distribution in the lower momentum limit. Power-law behavior of large $p_T$ distribution is also derived from the model.
Biyajima Minoru
Suzuki Nao
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