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Description of η-Distributions at RHIC Energies in Terms of a Stochastic Model

2004; Oxford University Press; Volume: 153; Linguagem: Inglês

10.1143/ptps.153.344

0375-9687

M. Biyajima, M. Ide, M. Kaneyama, Takuya Mizoguchi, Naomichi Suzuki,

Scientific Research and Discoveries

To explain η-distributions at RHIC energies we consider the Ornstein-Uhlenbeck process. To account for hadrons produced in the central region, we assume existence of third source located there (y ≈0) in addition to two sources located at the beam and target rapidities (±ymax = ±ln [√sNN/mN]). This results in better χ2/n.d.f. than those for only two sources when analysing data.