矢量介子的辐射衰变

Radiative Decay of Vector Mesons

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摘要介子的辐射衰变是低能强子物理研究的重要方向,通过它能够揭示介子的结构和性质。从有效场论的观点来看,介子衰变主要包含光子和强子之间的相互作用。使用SU(3)对称性和VMD模型分别对矢量介子的辐射衰变进行了研究。通过对实验数据进行拟和,给出了在两种情形下V→Pγ的衰变宽度的理论值,并得到赝标量混合角θP为-6°。 Radiative decay of mesons is an important aspect in low-energy hadronic physics, through which structures and properties of mesons can be revealed. In view of effective field theories, the radiative decay of mesons involves mainly interactions between photons and hadrons. In this paper, we investigate the decay of vector mesons by using SU（3） symmetry and the vector meson dominance model respectively. By fitting with experiments, we give the theoretic widths for V→Pγ in both cases and the mixing angle of pseudoscalars θP is --6°.

作者徐丽丽陈建兴张婷婷邹爱玲

机构地区辽宁师范大学物理与电子技术学院苏州高博软件技术职业学院

出处《原子核物理评论》 CAS CSCD 北大核心 2009年第3期188-193,共6页 Nuclear Physics Review

基金辽宁省教育厅科学技术研究项目(2008T097)~~

关键词矢量介子辐射衰变矢量介子主导模型 vector meson radiative decay vector meson dominance model

分类号 O572.25 [理学—粒子物理与原子核物理]

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矢量介子的辐射衰变

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