Welcome to RHIC News
We hope that this web publication will in some small measure reflect the excitement of the RHIC and AGS program at Brookhaven, as explained by some of the people who are doing the experiments, analyzing the data, and writing the papers.
Quarks in Heavy-Ion Collisions by Manuel Calderón de la
One of the most talked about topics in the physics of Heavy-Ion collisions is studying the production of heavy quarkonium states. This is one of the studies that aims to obtain information about possible formation of a Quark-Gluon Plasma in the laboratory. More...
STAR Mid-Rapidity Upgrades: The Detector
Gets Even Better by Jim Thomas for the STAR Collaboration
STAR was constructed to investigate the behavior of strongly interacting matter at high energy density and to search for signatures of the quark-gluon plasma (QGP). Key features of the nuclear environment at RHIC are a large number of produced particles (typically about 1500 into the acceptance of the detectors at mid-rapidity) and high momentum particles from hard parton scattering. STAR’s primary scientific mission is to understand the evolution of the collision process in ultra-relativistic heavy ion collisions and to measure as many signatures of the hypothesized strongly interacting QGP phase transition as possible. More...
Strange Particles Still Deserve Their Given Name? by Mark
Heinz, Yale University
The enhanced production of strange particles in heavy ion collisions is considered an important signature of the presence of a Quark-Gluon Plasma and hence one of the reasons for the RHIC experiments. Quantitative predictions of the enhancement as a function of collision centrality, i.e. amount of nuclear overlap, can be obtained from statistical model calculations. In contrast to these models and the initial heavy ion measurement at CERN, STAR has observed that the enhancements of strange baryons do not scale linearly with the number of participants, a measure of collision centrality. More...