Bibliographical noteFunding Information:
described by an exponential in mt. The inverse slope parameters, TO, obtained by an exponential fit, exp(-mt/TO), to the invariant cross section in p+A collisions are observed as: To(p, K+, x2 ) = 150 f 10 MeV, while in central Si+Au collisions, TO(p, K+) = 210 f 10 MeV > TO(@) = 150 + 10 MeV at mid rapidity. In p+Au, rapidity distributions for ti and K+ shift towards the target rapidity, while in p+Be they are broad and symmetric with respect to ynn. In central Si+Au, the rapidity distributions show a broad peak for a+, K+ with the K+ peaking at lower rapidity than d’s and ypart. The gradual increase of dn/dy for K+‘s per projectile nucleon from p+Be to p+Au and to central Si+Au collisions is observed, while it stays roughly the same for pions. A hint of K-enhancement in central Si+Au collisions is also seen This work has been supported by the U.S. Department of Energy, NASA, and the US-Japan High Energy Physics Collaboration Treaty.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics