Comparison of Source Images for Protons,π−’s, andΛ’s in6A GeVAu+AuCollisions

2002/12/31 by P. Chung, N. N. Ajitanand, J. M. Alexander +65 · 4 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex

paper · pdf · doi:10.1103/physrevlett.91.162301

published as Phys.Rev.Lett.91:162301,2003

arxiv created 2003/07/16 · openalex publication_date 2003/10/14 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

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\ensuremathΛ vs \ensuremathπ^\ensuremath-\ensuremathπ^\ensuremath- correlations. Scaling by transverse mass can describe the apparent source size ratio for p/\ensuremathπ^\ensuremath- but not for \ensuremathΛ/\ensuremathπ^\ensuremath- or \ensuremathΛ/p. These observations suggest important differences in the space-time emission histories for protons, pions, and neutral strange baryons produced in the same events.

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