NUKLEONIKA 2004, 49(Supplement 2):s57-s60
Gaël Renault for the STAR Collaboration
Laboratoire de Physique Subatomique et des Technologies Associées,
University of Nantes - IN2P3/CNRS - Ecole des Mines de Nantes,
4 rue Alfred Kastler, F-44307 Nantes Cedex 03, France
Information about the space-time evolution of colliding nuclei can be extracted correlating particles
emitted from nuclear collisions. The high density of particles produced in the STAR experiment allows
the measurement of non-identical strange particle correlations. Due to the absence of Coulomb
interaction, p-L and (anti)pL
systems are more sensitive to the source size than p-p pairs. Strong interaction potential
has been studied using p-L, and for the first time, (anti)pL
pairs. The experimental correlation functions have been described in the frame of a model based on
the p-n interaction. The first preliminary measurement of p-X
correlations has been performed, allowing to extract information about the freeze-out time and the space-time asymmetries in particle emission closely related to the transverse radial expansion and decay of resonances.