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تسجيل مستخدم جديدMeasurements of neutral and charged kaon production at high pT up to 15 GeV/c at STAR
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Yichun Xu
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We report an extension of charged kaon transverse momentum ($p_T$) spectra at mid-rapidity ($mid ymid <$ 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 $K^{pm}/pi^{pm}$ and $K^{0}/pi^{pm}$ 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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