results with STAR
Physics Department, Yale University, Sloane Physics Laboratory, P.O. Box 208120, CT 06520-8120, New Haven, USA
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This paper introduces the Solenoidal Tracker experiment at the Relativistic Heavy Ion Collider. The corrected p T spectra and the yields of the and their antiparticles in the most central Au + Au and elementary p + p collisions are presented. Comparison of the measurement with the other particles corroborates the fact that the behavior for hyperons (mass> 1.2 GeV) is similar in p + p and Au + Au collisions. The ratio, along with other resonance-to-stable-particle ratios, suggests that a regeneration mechanism recovers the signal loss due to re-scattering in the final state in Au + Au collisions.
© Springer-Verlag, 2005