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核中的手征对称性--理论期待与铁的事实

Chiral Symmetry in Nuclei -- Theoretical Expectations and Hard Facts

Ulrich Mosel

备注：
Invited Talk at Chiral07, Osaka, Japan, Nov. 13 - 16, 2007
发表信息：
Mod.Phys.Lett.A23:2371-2380,2008
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摘要：

人们普遍认为，手征对称性不仅在高温下恢复，而且在高核密度下也能恢复。手征性相变的序参量随密度的下降，手征性凝聚物，确实已经在各种模型中计算过，并且是这样一个相当稳健的结果。在这次演讲中，我指出，这种性质与实际观测值的联系远不清楚。为了完成这项任务，一个好的强子描述强子的初级产生，它们在核介质中的传播，它们的衰变以及衰变产物通过介质到探测器的传播都必须以同样的精度和权重来处理。在这次演讲中，我用$ω$生产和$π^0π^0$生产的例子来说明在特定的终态相互作用中是多么重要。

英文摘要：

It is widely believed that chiral symmetry is restored not only at high temperatures, but also at high nuclear densities. The drop of the order parameter of the chiral phase transition, the chiral condensate, with density has indeed been calculated in various models and is as such a rather robust result. In this talk I point out that the connection of this property with actual observables is far less clear. For this task a good hadronic description of the primary production of hadrons, their propagation inside the nuclear medium, their decay and the propagation of the decay products through the medium to the detector all have to be treated with equal accuracy and weight. In this talk I illustrate with the examples of $ω$ production and $π^0π^0$ production how important in particular final state interactions are.

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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