TY  - JOUR
A1  - Adams, J.
A1  - Adler, Clemens
A1  - Berger, Jens
A1  - Dietel, Thomas
A1  - Flierl, Dominik Bernhard
A1  - Kollegger, Thorsten
A1  - Lange, Jens Sören
A1  - Stock, Reinhard
A1  - Struck, Christof
A1  - al., et
A1  - Collaboration, STAR
T1  - Rapidity and centrality dependence of proton and antiproton production from 197Au + 197Au collisions at sqrt[SNN ]=130 GeV
N2  - We report on the rapidity and centrality dependence of proton and antiproton transverse mass distributions from 197Au + 197Au collisions at sqrt[sNN ]=130 GeV as measured by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). Our results are from the rapidity and transverse momentum range of |y| <0.5 and 0.35< pt <1.00 GeV/c . For both protons and antiprotons, transverse mass distributions become more convex from peripheral to central collisions demonstrating characteristics of collective expansion. The measured rapidity distributions and the mean transverse momenta versus rapidity are flat within |y| <0.5 . Comparisons of our data with results from model calculations indicate that in order to obtain a consistent picture of the proton (antiproton) yields and transverse mass distributions the possibility of prehadronic collective expansion may have to be taken into account.
Y1  - 2004
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3549
UR  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hebis:30-19042
ER  -