Resonances in J/psi -> phi pi(+)pi(-) and phi K+K-

	Resonances in J/psi -> phi pi(+)pi(-) and phi K+K-
	BES Callaboration
刊名	PHYSICS LETTERS B
	2005
卷号	607 期号:3--4 页码:243-253
关键词	AMPLITUDE ANALYSIS GEV-C MESONS DECAYS J/PSI
通讯作者	Ablikim, M (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China.
英文摘要	A partial wave analysis is presented of J/psi --> phipi(+)pi(-) and phiK(+)K(-) from a sample of 58M J/psi events in the BES II detector. The f(0)(980) is observed clearly in both sets of data, and parameters of the Flatte formula are determined accurately: M = 965 +/- 8(stat) +/- 6(syst) MeV/c(2), g(1) = 165 +/- 10 +/- 15 MeV/c(2), g(2)/g(1) = 4.21 +/- 0.25 +/- 0.21. The phipipi data also exhibit a strong pipi peak centred at M = 1335 MeV/c(2). It may be fitted with f(2)(1270) and a dominant 0(+) signal made from f(0)(1370) interfering with a smaller f(0)(1500) component. There is evidence that the f(0)(1370) signal is resonant, from interference with f(2)(1270). There is also a state in pipi with M = 1790(-30)(+40) MeV/c(2) and Gamma = 270(-30)(+60) MeV/c(2); spin 0 is preferred over spin 2. This state, f(0)(1790), is distinct from f(0)(1710). The phiK (K) over bar data contain a strong peak due to f(2)'(1525). A shoulder on its upper side may be fitted by interference between f(0)(1500) and f(0)(1710). (C) 2004 Elsevier B.V. All rights reserved.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000226930000006
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/212511]
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	BES Callaboration. Resonances in J/psi -> phi pi(+)pi(-) and phi K+K-[J]. PHYSICS LETTERS B,2005,607(3--4):243-253.
APA	BES Callaboration.(2005).Resonances in J/psi -> phi pi(+)pi(-) and phi K+K-.PHYSICS LETTERS B,607(3--4),243-253.
MLA	BES Callaboration."Resonances in J/psi -> phi pi(+)pi(-) and phi K+K-".PHYSICS LETTERS B 607.3--4(2005):243-253.