Description of eta-distributions at RHIC energies in terms of the   Ornstein-Uhlenbeck process and relativistic diffusion equations
  Assuming the Ornstein-Uhlenbeck process and relativistic diffusion equations with three sources at y = 0, we analyze eta-distributions of d+Au collision as well as Au+Au collisions at sqrt{s_{NN}} = 130 GeV and 200 GeV. 
Minoru Biyajima, Masahiro Kaneyama, Takuya Mizoguchi and Noriaki   Nakajima