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arXiv 1310.1069hep-ph
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奇异重子介子比

Strange Baryon to Meson Ratio

Eleazar Cuautle, Alejandro Ayala

摘要:

本文提出了一个计算相对论性重离子碰撞中重子和介子横动量分布及其比值的模型。该模型允许计算的概率,形成无色的束缚态的两个或三个夸克作为函数的不断变化的密度在碰撞过程中。对于不同的碰撞能量和不同的粒子种类,重子介子比的定性差异可以与不同的密度依赖概率和组合因子相关联,而这些组合因子又取决于形成束缚态的夸克是重夸克还是轻夸克。我们比较实验数据,并表明,我们得到一个很好的描述高达中间值的$pt$。

英文摘要:

We present a model to compute baryon and meson transverse momentum distributions, and their ratios, in relativistic heavy-ion collisions. The model allows to compute the probability to form colorless bound states of either two or three quarks as functions of the evolving density during the collision. The qualitative differences of the baryon to meson ratio for different collision energies and for different particle species can be associated to the different density dependent probabilities and to the combinatorial factors which in turn depend on whether the quarks forming the bound states are heavy or light. We compare to experimental data and show that we obtain a good description up to intermediate values of $pt$.

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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