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arXiv 0907.2633nucl-ex
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$\sqrt{s_{NN}}$ = 200 GeV在STAR中d+Au碰撞的奇异产生

Strangeness production in d+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV in STAR

Xianglei Zhu

摘要:

本文报道了在STAR中,在\sqrt{s_{NN}} = 200 GeV的最中心(0-20%)d+Au碰撞中奇异强子($K^0_S$,$Λ$,$Ξ$)产生的测量结果.在最中心的d+Au碰撞中,特别是多奇异超子($Ξ$)的碰撞中,观察到奇异度的显著增强.所识别粒子的核修饰因子($R_{dAu}$)在中间态$p_T$(2 - 3.5 GeV/c)显示出可能的粒子类型--重子(质子,$Λ$),介子($π$,$K^0_S$,$ϕ$)--依赖性,表明终态可能对克罗宁效应有影响。

英文摘要:

We report on the measurements of strange hadron ($K^0_S$, $Λ$, $Ξ$) production in the most central (0-20%) d+Au collisions at \sqrt{s_{NN}} = 200 GeV in STAR. Significant strangeness enhancement is observed in the most central d+Au collisions, especially for multi-strange hyperons ($Ξ$). The nuclear modification factor ($R_{dAu}$) of identified particles shows possible particle type -- baryon (protons, $Λ$), meson ($π$,$K^0_S$, $ϕ$) -- dependence at intermediate $p_T$ (2 - 3.5 GeV/c), indicating that the final state may have an impact on the Cronin effect.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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