Measurement of the asymmetry parameter for the decay (Lambda)over-bar -> (p)over-bar pi(+)

	Measurement of the asymmetry parameter for the decay (Lambda)over-bar -> (p)over-bar pi(+)
	BES Callaboration
刊名	PHYSICAL REVIEW D
	2010
卷号	81 期号:1
关键词	HADRON-NUCLEUS COLLISIONS DETECTOR SIMULATION CP INVARIANCE HYPERON
通讯作者	Ablikim, M (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China.
英文摘要	Based on a sample of 58 X 10(6) J/psi decays collected with the BESII detector at the BEPC, the (Lambda) over bar decay parameter alpha((Lambda) over bar) for (Lambda) over bar -> (p) over bar pi(+) is measured using about 9000 J/psi -> Lambda(Lambda) over bar -> p (p) over bar pi(+)pi(-) decays. A fit to the joint angular distributions yields alpha((Lambda) over bar) ((Lambda) over bar -> (p) over bar pi(+)) = -0.755 +/- 0: 083 +/- 0: 063, where the first error is statistical, and the second systematic.
学科主题	Astronomy & Astrophysics; Physics
类目[WOS]	Astronomy & Astrophysics ; Physics, Particles & Fields
收录类别	SCI
语种	英语
WOS记录号	WOS:000274002800006
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/212925]
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. Measurement of the asymmetry parameter for the decay (Lambda)over-bar -> (p)over-bar pi(+)[J]. PHYSICAL REVIEW D,2010,81(1).
APA	BES Callaboration.(2010).Measurement of the asymmetry parameter for the decay (Lambda)over-bar -> (p)over-bar pi(+).PHYSICAL REVIEW D,81(1).
MLA	BES Callaboration."Measurement of the asymmetry parameter for the decay (Lambda)over-bar -> (p)over-bar pi(+)".PHYSICAL REVIEW D 81.1(2010).