Measuring Dynamical K/$π$ and p/$π$ Fluctuations in Au+Au Collisions from the STAR Experiment

Details Measuring Dynamical K/$π$ and p/$π$ Fluctuations in Au+Au Collisions from the STAR Experiment Measuring Dynamical K/$π$ and p/$π$ Fluctuations in Au+Au Collisions from the STAR Experiment

2011-01-17

arxiv.org/abs/1101.3351v1

Physics

Nuclear Physics

Nuclear Experiment

10 pages, 5 figures, To be published in the proceedings of CPOD 2010, Dubna, Russia, August 2010, Yadernaya Fizika (Physics of

Scientific paper

Results from new measurements of dynamical $K/\pi$ and $p/\pi$ ratio fluctuations are presented. Dynamical fluctuations in global conserved quantities such as baryon number, strangeness, or charge may be observed near a QCD critical point. The STAR experiment has previously acquired data in Au+Au collisions at the energies $\sqrt{s_{NN}}$ = 200, 130, 62.4, and 19.6 GeV and Cu+Cu collisions at $\sqrt{s_{NN}}$ = 200, 62.4, and 22.4 GeV. The commencing of a QCD critical point search at RHIC has extended the reach of possible measurements of dynamical $K/\pi$ and $p/\pi$ ratio fluctuations from Au+Au collisions to lower energies. New results are compared to previous measurements and to theoretical predictions from the UrQMD model.

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