$K^{*}(892)$ Production in Au+Au and pp Collisions at $\sqrt{s_{NN}}$ = 200GeV at STAR

Details $K^{*}(892)$ Production in Au+Au and pp Collisions at $\sqrt{s_{NN}}$ = 200GeV at STAR $K^{*}(892)$ Production in Au+Au and pp Collisions at $\sqrt{s_{NN}}$ = 200GeV at STAR

2003-06-30

arxiv.org/abs/nucl-ex/0306034v1

J.Phys. G30 (2004) S577-S582

Physics

Nuclear Physics

Nuclear Experiment

6 pages, 4 figures, proceedings of Strange Quarks in Matter (SQM2003), Atlantic Beach, USA, to be published in J. Phys. G

Scientific paper

10.1088/0954-3899/30/1/071

Mid-rapidity $K^{*0}(892)\to K\pi$ and $K^{*\pm}(892)\to K_S^0\pi^{\pm}$ are measured in Au+Au and pp collisions at $\sqrt{s_{NN}}$=200GeV using the STAR detector at RHIC. The $K^{*0}(892)$ mass is systematically shifted at small transverse momentum for both Au+Au and pp collisions. The $K^{*0}(892)$ transverse mass spectra are measured in Au+Au collisions at different centralities and in pp collisions. The $K^{*0}(892)$ mean transverse momentum as a function of the collision centrality is compared to those of identified $\pi^{-}$, $K^{-}$ and $\bar{p}$. The $K^{*}/K$ and $\phi/K^{*}$ ratios are compared to measurements in A+A, $pp$, $\bar{p}p$, $e^{+}e^{-}$ collisions at various colliding energies. The physics implications of these measurements are also discussed.

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