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Understanding the property of eta(1405/1475) in the J/psi radiative decay
Wu XG(吴小刚); Wu JB(吴俊宝); Zhao Q(赵强); 邹冰松;Wu, XG; Wu, JJ; Zhao, Q; Zou, BS
2013
发表期刊PHYSICAL REVIEW D
卷号87期号:1页码:14023
摘要In this work we make a systematic analysis of the correlated processes J/psi -> gamma eta(1440)/f(1)(1420) with eta(1440)/f(1)(1420) -> K (K) over bar pi, eta pi pi and 3 pi, where the role played by the so-called "triangle singularity mechanism" (TSM) is clarified. Our results agree well with the experimental data and suggest a small fraction of f(1)(1420) contributions in these processes. This study confirms our conclusion [Wu et al. Phys. Rev. Lett. 108, 081803 (2012)] that the dynamic feature of the TSM can be recognized by the strong narrow peak observed in the pi pi invariant mass spectrum of eta(1440) -> 3 pi with anomalously large isospin violations. Nevertheless, we explicitly demonstrate that the TSM can produce obvious peak position shifts for the same eta(1440) or f(1)(1420) state in different decay channels. This is strong evidence that the eta(1405) and eta(1475) are actually the same state, i.e., eta(1440). We also make an analysis of the radiative decays of eta(1440) -> gamma V (V = phi, rho(0), or omega), which shows that such a one-state prescription seems not to have a conflict with the so-far existing experimental data. Our analysis may shed light on the long-standing puzzling question about the nature of eta(1405) and eta(1475). DOI: 10.1103/PhysRevD.87.014023
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.87.014023
收录类别SCI
WOS记录号WOS:000314095600005
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被引频次:35[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224489
专题理论物理室
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Wu XG,Wu JB,Zhao Q,et al. Understanding the property of eta(1405/1475) in the J/psi radiative decay[J]. PHYSICAL REVIEW D,2013,87(1):14023.
APA 吴小刚.,吴俊宝.,赵强.,邹冰松;Wu, XG.,Wu, JJ.,...&Zou, BS.(2013).Understanding the property of eta(1405/1475) in the J/psi radiative decay.PHYSICAL REVIEW D,87(1),14023.
MLA 吴小刚,et al."Understanding the property of eta(1405/1475) in the J/psi radiative decay".PHYSICAL REVIEW D 87.1(2013):14023.
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