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arXiv 0901.2909nucl-th
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相对论核碰撞中的热强子产生

Thermal hadron production in relativistic nuclear collisions

A. Andronic, P. Braun-Munzinger, J. Stachel

摘要:

本文介绍了统计模型下描述中心核-核碰撞中强子产生的现状。扩展以前的研究,包括非常高的质量共振(m>2 GeV),到目前为止被忽视的标量$σ$介子导致改进的数据描述。特别是,到目前为止,在SPS能量(“角”)的K+/π +比的再现能量依赖性差,现在很好地描述了通过连接到强子质谱,并隐含,哈格多恩的极限温度。

英文摘要:

We present the status of the description of hadron production in central nucleus-nucleus collisions within the statistical model . Extending previous studies by inclusion of very high-mass resonances (m>2 GeV), and the up-to-now neglected scalar $σ$ meson leads to an improved description of the data. In particular, the hitherto poorly reproduced energy dependence of the K+/pi+ ratio at SPS energies ("the horn") is now well described through the connection to the hadronic mass spectrum and, implicitly, Hagedorn's limiting temperature.

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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