Resonance Studies at STAR

Abstract

We report on the observed signals of $K^{\star 0}(892)\to \pi K$ and $\varphi (1020)\to K^{+}{K}^{-}$ 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 $K^{\star 0}/h^{-}$ ratios with an assumed $K^{\star 0}$ $p_T$ inverse slope of 300MeV are compatible with that from pp at ISR. For 14% central Au+Au collisions, we observe $K^{\star 0}/h^{-}=0.060\pm 0.007(stat)$ and $\overline{K^{\star 0}}/h^{-}=0.058\pm 0.007(stat)$. We show that $\bar{\Lambda }/\Lambda =0.77\pm 0.07(stat)$ from this method is consistent with the measurement via decay topology.

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

Cited by in corpus (6)

• Strange Resonance Production: Probing Chemical and Thermal Freeze-out in Relativistic Heavy Ion Collisions
• $K^{\ast }(892{)}^0$ and ${\bar{K}}^{\ast }(892{)}^0$ production in central Pb+Pb, Si+Si, C+C and inelastic p+p collisions at 158$A$~GeV
• Strange Hadron Resonances and QGP Freeze-out
• Probing hadronization and freeze-out with multiple strange hadrons and strange resonances
• Strangeness Enhancement in the Parton Model
• K*(892)0 Production in Relativistic Heavy Ion Collisions at sqrt(s_NN) = 130 GeV