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arXiv · 0907.4644

Measurements of neutral and charged kaon production at high pT up to 15 GeV/c at STAR

Yichun Xu
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Abstract

We report an extension of charged kaon transverse momentum ($p_T$) spectra at mid-rapidity ($\mid y\mid <$ 0.5) up to 15 GeV/$c$, neutral kaon $p_T$ spectra up to 12 GeV/$c$ using events triggered by the Barrel Electro-Magnetic Calorimeter (BEMC) from p+p collisions at $\sqrt{s_{NN}}$ = 200 GeV. The $K^{\pm}/π^{\pm}$ and $K^{0}/π^{\pm}$ at high $p_T$ are compared in p+p and Au+Au collisions, and nuclear modification factor ($R_{AA}$)for pion, kaon, proton and rho are discussed. The $R_{AA}$ for kaon in central collisions are consistent with theory calculation having jet conversion in a plasma of quarks and gluons.

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Yichun Xu. 2009-09-13. Measurements of neutral and charged kaon production at high pT up to 15 GeV/c at STAR. https://doi.org/10.1016/j.nuclphysa.2009.09.059

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