Abstract
We report the first measurement of strange () and antistrange () baryon production from collisions at the Relativistic Heavy Ion Collider (RHIC). Rapidity density and transverse mass distributions at midrapidity are presented as a function of centrality. The yield of and hyperons is found to be approximately proportional to the number of negative hadrons. The production of hyperons relative to negative hadrons increases very rapidly with transverse momentum. The magnitude of the increase cannot be described by existing hadronic string fragmentation models alone.
- Received 22 March 2002
DOI:https://doi.org/10.1103/PhysRevLett.89.092301
©2002 American Physical Society