Precision Study of eta ' -> gamma pi(+) pi(-) Decay Dynamics

doi:10.1103/PhysRevLett.120.242003

	Precision Study of eta ' -> gamma pi(+) pi(-) Decay Dynamics
	BESIII Collaboration
刊名	PHYSICAL REVIEW LETTERS
	2018
卷号	120 期号:24 页码:242003
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.120.242003
文献子类	Article
英文摘要	Using a low background data sample of 9.7 x 10(5) J/psi -> gamma eta',eta' -> gamma pi(+)pi(-) events, which are 2 orders of magnitude larger than those from the previous experiments, recorded with the BESIII detector at BEPCII, the decay dynamics of eta' -> gamma pi(+)pi(-) are studied with both model-dependent and model-independent approaches. The contributions of. and the rho(770)-omega interference are observed for the first time in the decays eta' -> gamma pi(+)pi(-) in both approaches. Additionally, a contribution from the box anomaly or the rho(1450) resonance is required in the model-dependent approach, while the process specific part of the decay amplitude is determined in the model-independent approach.
电子版国际标准刊号	1079-7114
WOS关键词	INITIAL-STATE RADIATION ; KLOE DETECTOR ; CROSS-SECTION ; FORM-FACTOR ; RHO-MESON ; COLLISIONS ; WIDTH ; PI(+)PI(-)) ; ETA'(958) ; E(+)E(-)
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000435336200004
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/287029]
专题	高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	BESIII Collaboration. Precision Study of eta ' -> gamma pi(+) pi(-) Decay Dynamics[J]. PHYSICAL REVIEW LETTERS,2018,120(24):242003.
APA	BESIII Collaboration.(2018).Precision Study of eta ' -> gamma pi(+) pi(-) Decay Dynamics.PHYSICAL REVIEW LETTERS,120(24),242003.
MLA	BESIII Collaboration."Precision Study of eta ' -> gamma pi(+) pi(-) Decay Dynamics".PHYSICAL REVIEW LETTERS 120.24(2018):242003.