Description of η-distributions at RHIC energies in terms of a stochastic model
Minoru Biyajima, Masaru Ide, Masahiro Kaneyama, Takuya Mizoguchi, Naomichi Suzuki
Abstract
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 = [sNN/mN]). This results in better χ2/n.d.f. than those for only two sources when analysing data.
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