Rapidity Dependence of Thermal Parameters at RHIC and SPS J. Cleymans

Jean Cleymans http://hep.phy.uct.ac.za/~cleymans (UCT-CERN Research Centre) [email protected]

Outline

1) Status of Chemical Equilibrium 2) Relation between E/N and ET/Ncharge 3) Rapidity Dependence of Thermal Parameters Jean Cleymans http://hep.phy.uct.ac.za/~cleymans (UCT-CERN Research Centre) [email protected]

J

F. Becattini, J.C., A. Keranen, K. Redlich, E. Suhonen, Phys. Rev. C64 024901; J.C and K. Redlich, PRL 24 (1998) 5284 1

Will it be possible to measure directly E/N ?

E: energy of primordial hadrons N: number of primordial hadrons

Only secondary decay products are measured.

J.C., R. Sahoo, D.K. Srivastava, S. Wheaton

J.C.,

Beyond Integrated Particle Yields.

CONCLUSION The evidence for chemical equilibrium in relativistic heavy ion collisions is

OVERWHELMING

Thanks