Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2004-10-26
J.Phys. G31 (2005) S195-S202
Physics
Nuclear Physics
Nuclear Experiment
8 pages, 5 figures, proceedings of Hot Quarks 2004 workshop, submitted to J. Phys. G
Scientific paper
10.1088/0954-3899/31/4/024
Typical comparisons of data from nuclear collisions to particle production models require a caveat for (anti)Lambda yields from experimental inability to separate the contributions of those yields from Sigma state decays. Recent analysis in STAR is leading toward resolving the contribution from excited Sigma states, but the bulk contribution comes from electromagnetic decays of the (anti)Sigma0. In the STAR detector, photon conversions into e+e- pairs in the detector material have been used to identify photons from pi0 decays. A similar technique has been used here to identify photons from (anti)Sigma0 decays in conjunction with STAR's excellent PID capabilities for finding the associated (anti)Lambda daughters. We report here on progress toward measuring the (anti)Sigma0 yields in various nuclear collisions at RHIC.
Buren Van G.
for the STAR Collaboration
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