Source parameters from identified hadron spectra and HBT radii for Au-Au collisions at √SNN = 200 GeV in PHENIX

The characteristics of the particle emitting source are deduced from low pT identified hadron spectra ((mT - mo) < 1 GeV) and HBT radii using a hydrodynamic interpretation. From the most peripheral to the most central data, the single particle spectra are fit simultaneously for all π±, K±, and p-bar/p using previously reported parameterization and assuming a linear transverse flow profile. Within the systematic uncertainties, the expansion parameters Tfo and βT, respectively decrease and increase with the number of participants, saturating for both at mid-centrality. The expansion using analytic calculations of the kT dependence of HBT radii is fit to the data but not χ2 minimum is found