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arXiv 1003.4609nucl-ex
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用ALICE探测器研究pp碰撞中奇异粒子的产生

Study of strange particle production in pp collisions with the ALICE detector

H. Ricaud, A. Kalweit, A. Maire

摘要:

ALICE非常适合于奇怪粒子的生产研究,因为它具有很好的重建能力,在低横向动量($p_{t}$)的区域,它也允许扩展识别到相当高的$p_{t}$。通过能量损失测量重建了带电奇异介子($\kp$,$\km$,),通过顶点重建识别了中性奇异介子($\ks$)和奇异超子($\lam$,$Ξ$,$Ω$).所有这些粒子携带重要的信息:首先,生产率和统计模型内的粒子比的测量可以帮助理解创建的介质,其次,通过重子介子比($\lam / \ks$)研究的中间$p_{t}$的动态允许更好地理解强子化机制和潜在的事件过程。我们利用模拟数据对pp碰撞中的奇异粒子进行了这两方面的分析。

英文摘要:

ALICE is well suited for strange particles production studies since it has very good reconstruction capabilities in the low transverse momentum ($p_{t}$) region and it also allows to extend the identification up to quite high $p_{t}$. Charged strange mesons ($\kp$, $\km$,) are reconstructed via energy loss measurements whereas neutral strange mesons ($\ks$) and strange hyperons ($\lam$, $Ξ$, $Ω$) are identified via vertex reconstruction. All these particles carry important information: first, the measurement of production yields and the particle ratio within the statistical models can help to understand the medium created and secondly the dynamics at intermediate $p_{t}$ investigated via the baryon over meson ratio ($\lam / \ks$) allows a better understanding of the hadronization mechanisms and of the underlying event processes. We present these two aspects of the strange particles analysis in pp collisions using simulated data.

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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