Transverse momentum distribution with radial flow in relativistic diffusion model
- Resource Type
- Working Paper
- Authors
- Suzuki, N.; Biyajima, M.
- Source
- Int.J.Mod.Phys. E16 (2007) 133-148
- Subject
- High Energy Physics - Phenomenology
- Language
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.
Comment: 7 pages, 5 figures and 6 tables