Understanding the property of eta(1405/1475) in the J/psi radiative decay

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	Understanding the property of eta(1405/1475) in the J/psi radiative decay
	Zou, BS
刊名	PHYSICAL REVIEW D
	2013
卷号	87 期号:1 页码:14023
关键词	PARTIAL-WAVE ANALYSIS
ISSN号	1550-7998
通讯作者	Wu, XG (reprint author), Chinese Acad Sci, Inst High Energy Phys, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China.
英文摘要	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
学科主题	Physics
收录类别	SCI
资助信息	National Natural Science Foundation of China [11035006, 11121092]; DFG; NSFC [CRC110]; Chinese Academy of Sciences [KJCX2-EW-N01]; Ministry of Science and Technology of China [2009CB825200]; U.S. Department of Energy [DE-AC02-06CH11357]
原文出处	http://dx.doi.org/10.1103/PhysRevD.87.014023
语种	英语
WOS记录号	WOS:000314095600005
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15431]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Zou, BS. Understanding the property of eta(1405/1475) in the J/psi radiative decay[J]. PHYSICAL REVIEW D,2013,87(1):14023.
APA	Zou, BS.(2013).Understanding the property of eta(1405/1475) in the J/psi radiative decay.PHYSICAL REVIEW D,87(1),14023.
MLA	Zou, BS."Understanding the property of eta(1405/1475) in the J/psi radiative decay".PHYSICAL REVIEW D 87.1(2013):14023.