Quark-gluon plasma tomography by vector mesons

The fireball formed in a heavy ion collision is characterized by the impact parameter vector (b) over right arrow, which can be determined from the mu ltiplicity and the angular distribution of the reaction products. By approp riate rotations the (b) over right arrow vectors of each collision can be a ligned into a fixed direction. Using the measured values of the momentum di stributions independent integral equations can be formulated for the unknow n emission densities (EM((r) over right arrow)) and for the unknown absorpt ion densities (Delta mu((r) over right arrow)) of the different vector meso ns M (equivalent to omega (0), rho (0), phi (0), psi (0), psi (0)', gamma).