Compositeness of hadron resonances in chiral dynamics

Compositeness of hadron resonances in chiral dynamics
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DOI:
10.1142/s0218301314610035
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发表时间:
2014-07
期刊:
International Journal of Modern Physics E-nuclear Physics
影响因子:
--
通讯作者:
T. Hyodo
T. Hyodo
中科院分区:
其他
文献类型:
--
作者:
T. Hyodo

文献摘要

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最近对许多非常规强子态的实验观察激发了人们对强子结构的兴趣。虽然已经提出了各种内部配置,但以独立于模型的方式识别强子共振的结构是一个微妙的问题。在这里,我们使用场重正化常数 Z 讨论强子的复合/基本性质。特别是,我们表明有效范围参数 re 的大小与 s 波近阈值共振的结构有关。
Recent experimental observations of many unconventional hadronic states stimulate an interest in the structure of hadrons. While various internal configurations have been proposed, it is a subtle problem to identify the structure of hadron resonances in a model independent manner. Here we discuss the composite/elementary nature of hadrons using the field renormalization constant Z. In particular, we show that the magnitude of the effective range parameter re is related to the structure of s-wave near-threshold resonances.