Hydrodynamical Analysis of Hadronic One- and Two-Particle Spectra in Relativistic Heavy Ion Collisions

We study one-particle spectra and a two-particle correlation function in the 130 GeV/nucleon Au+Au collisions at RHIC by making use of a hydrodynamical model. We calculate the one-particle hadronic spectra and present the first analysis of Bose-Einstein correlation functions based on the numerical solution of the hydrodynamical equations which takes both longitudinal and transverse expansion into account appropriately. The hydrodynamical model provides excellent agreement with the experimental data in the pseudorapidity and the transverse momentum spectra of charged hadrons, the rapidity dependence of anti-proton to proton ratio and the pion Bose-Einstein correlation functions. We compare the particle spectra and space-time evolution of the fluid at RHIC with the ones at SPS.

Our numerical solution suggests the formation of the quark-gluon plasma with large volume and low net-baryon density.