Observation of h(1)(1380) in the J/psi -> eta ' K(K)over-bar pi decay

doi:10.1103/PhysRevD.98.072005

	Observation of h(1)(1380) in the J/psi -> eta ' K(K)over-bar pi decay
	BESIII Collaboration
刊名	PHYSICAL REVIEW D
	2018
卷号	98 期号:7 页码:72005
ISSN号	2470-0010
DOI	10.1103/PhysRevD.98.072005
文献子类	Article
英文摘要	Using 1.31 x 10(9) J/psi events collected by the BESIII detector at the BEPCII e(+)e(-) collider, we report the first observation of the h(1)(1380) in J/psi -> eta'h(1)(1380) with a significance of more than ten standard deviations. The mass and width of the possible axial-vector strangeonium candidate h(1)(1380) are measured to be M = (1423.2 +/- 2.1 +/- 7.3) MeV/c(2) and Gamma = (90.3 +/- 9.8 +/- 17.5) MeV. The product branching fractions, assuming no interference, are determined to be B(J/psi -> eta'h(1)(1380)) x B(h(1)(1380) -> K(892)K-+(-)+c.c.) = (1.51 +/- 0.09 +/- 0.21) x 10(-4) in eta'K+K-pi(0) mode and B(J/psi -> eta'h(1)(1380)) x B(h(1)(1380) -> K(892)(K) over bar +c.c.) =(2.16 +/- 0.12 +/- 0.29) x 10(-4) in eta'(KSK +/-)-K-0 pi(-/+) mode. The first uncertainties are statistical and the second are systematic. Isospin symmetry violation is observed in the decays h(1)(1380) K(892)K-+(-) + c.c. and h(1)(1380) -> K(892)(0)(K) over bar (0) + c.c.. Based on the measured h(1)(1380) mass, the mixing angle between the states h(1)(1170) and h(1)(1380) is determined to be (35.9 +/- 2.6)degrees, consistent with theoretical expectations.
电子版国际标准刊号	2470-0029
WOS关键词	QUARK-MODEL ; MESON ; VECTOR ; WAVE
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
WOS记录号	WOS:000447623400001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286816]
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. Observation of h(1)(1380) in the J/psi -> eta ' K(K)over-bar pi decay[J]. PHYSICAL REVIEW D,2018,98(7):72005.
APA	BESIII Collaboration.(2018).Observation of h(1)(1380) in the J/psi -> eta ' K(K)over-bar pi decay.PHYSICAL REVIEW D,98(7),72005.
MLA	BESIII Collaboration."Observation of h(1)(1380) in the J/psi -> eta ' K(K)over-bar pi decay".PHYSICAL REVIEW D 98.7(2018):72005.