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arXiv 1502.05437nucl-th
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重离子碰撞中的多重奇异性

Multistrangeness in Heavy-Ion Collisions

E. E. Kolomeitsev, I. Melo, B. Tomasik, D. N. Voskresensky

摘要:

本文讨论了从SIS能区到AGS-SPS-RHIC能区,再到LHC能区的重离子碰撞中奇异态的产生。在几个例子中,我们展示了如何奇异粒子生产可以揭示信息的碰撞动力学和有关可能的修改介质中的粒子性质。特别是含有两个或多个奇异夸克的强子的产生,如$Ξ$和$Ω$重子,或$ϕ$介子是令人感兴趣的。我们进行我们的讨论的最小统计模型的框架中,其中的总奇异产量是固定的$K^+$多重性。强调了在产生少量奇异粒子的碰撞中,必须明确地保持每个碰撞事件中的奇异度守恒。

英文摘要:

We discuss strangeness production in heavy-ion collisions in the broad energy range --- from SIS energies through AGS-SPS-RHIC and upto LHC energies. On several examples we demonstrate how the strange particle production can reveal information about the collision dynamics and about possible modifications of particle properties in medium. In particular the production of hadrons containing two and more strange quarks, like $Ξ$ and $Ω$ baryons, or a $ϕ$ meson is of interest. We conduct our discussion in the framework of the minimal statistical model, in which the total strangeness yield is fixed by the $K^+$ multiplicity. It is emphasized that in collisions with a small number of produced strange particles, the exact strangeness conservation in each collision event must be explicitly preserved.

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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