arXiv 0907.23882009-07nucl-thhep-phnucl-ex

强相互作用物质中的强子

Hadrons in strongly interacting matter

Stefan Leupold, Volker Metag, Ulrich Mosel

备注：: Review, revised version, to appear in Int. J. Mod. Phys. E
发表信息：: Int.J.Mod.Phys.E19:147-224,2010
DOI：: 10.1142/S0218301310014728

摘要：

本文综述了强相互作用强子物质中光矢量介子和标量介子性质的理论和实验研究现状。从讨论QCD的相关对称性及其与强子描述的联系出发，通过QCD求和规则，我们讨论了用于计算介质中强子自能及其谱函数的强子模型。这些计算的属性，以实际观测的困难被强调。最后，我们详细回顾了所有正在运行的实验，寻找在介质中的矢量和标量介子的变化，无论是相对论重离子反应，以及与（冷）核上的基元反应。对实验结果之间的相关性进行了讨论。虽然几乎所有的实验都观察到核介质内矢量介子的相当大的加宽，但在大多数实验中没有观察到质量变化的证据。

英文摘要：

We review the current status of theories and experiments aiming at an understanding and a determination of the properties of light vector and scalar mesons inside strongly interacting hadronic matter. Starting from a discussion of the relevant symmetries of QCD and their connection with the hadronic description through QCD sum rules we then discuss hadronic models used to calculate the in-medium self-energies of hadrons and their spectral functions. The difficulties to link these calculated properties to actual observables are emphasized. Finally, we review in detail all the running experiments searching for in-medium changes of vector and scalar mesons, both with relativistic heavy-ion reactions as well as with elementary reactions on (cold) nuclei. Inconsistencies among experimental results are discussed. While almost all experiments observe a considerable broadening of vector mesons inside the nuclear medium, no evidence for mass changes is observed in the majority of the experiments.

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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