Comparison of source images for protons, pi-'s, and lambda's in 6A GeV Au+Au collisions

Phys Rev Lett. 2003 Oct 17;91(16):162301. doi: 10.1103/PhysRevLett.91.162301. Epub 2003 Oct 14.

Abstract

Source images are extracted from two-particle correlations constructed from strange and nonstrange hadrons produced in 6A GeV Au+Au collisions. Very different source images result from pp vs p Lambda vs pi(-)pi(-) correlations. Scaling by transverse mass can describe the apparent source size ratio for p/pi(-) but not for Lambda/pi(-) or Lambda/p. These observations suggest important differences in the space-time emission histories for protons, pions, and neutral strange baryons produced in the same events.