Resonance Studies at STAR

Details Resonance Studies at STAR Resonance Studies at STAR

2001-03-31

arxiv.org/abs/nucl-ex/0104001v2

Nucl.Phys. A698 (2002) 607-610

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 4 figures, Quark Matter 2001, contributed talk; typos of K*/h- numbers in abstract fixed

Scientific paper

We report on the observed signals of ${K^{\star0}(892)}\to\pi K$ and $\phi(1020)\to K^{+}K^{-}$ using the mixed-event method with powerful statistics from the large acceptance and highly efficient STAR TPC. Preliminary results from the first observation of such states from the year-one STAR data in $\sqrt{s_{NN}}=130$ GeV Au-Au collisions are presented. The $K^{\star0}/h^{-}$ ratios with an assumed $K^{\star0}$ $p_{T}$ inverse slope of 300MeV are compatible with that from pp at ISR. For 14% central Au+Au collisions, we observe $K^{\star0}/h^{-}=0.060\pm0.007(stat)$ and $\bar{K^{\star0}}/h^{-}=0.058\pm0.007(stat)$. We show that $\bar{\Lambda}/\Lambda=0.77\pm0.07(stat)$ from this method is consistent with the measurement via decay topology.

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