中国科学院机构知识库网格系统: Precision measurement of the branching fractions of J/psi -> pi(+)pi(-)pi(0) and psi ' -> pi(+)pi(-)pi(0)

Precision measurement of the branching fractions of J/psi -> pi(+)pi(-)pi(0) and psi ' -> pi(+)pi(-)pi(0)

文献类型：期刊论文


作者	BESIII Callaboration
刊名	PHYSICS LETTERS B
出版日期	2012
卷号	710 期号:4--5 页码:594-599
关键词	RHO-PI PUZZLE DECAYS BESIII
通讯作者	Berger, N (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China.
英文摘要	We study the decays of the J/psi and psi' mesons to pi(+)pi(-)pi(0) using data samples at both resonances collected with the BES III detector in 2009. We measure the corresponding branching fractions with unprecedented precision and provide mass spectra and Dalitz plots. The branching fraction for J/psi -> pi(+)pi(-)pi(0) is determined to be (2.137 +/- 0.004 (stat.)(-0.056)(+0.058) (syst.)(-0.026)(+0.027) (norm.)) x 10(-2), and the branching fraction for psi' -> pi(+)pi(-)pi(0) is measured as (2.14 +/- 0.03 (stat.)(-0.07)(+0.08) (syst.)(-0.08)(+0.09) (norm)) x 10(-4). The J/psi decay is found to be dominated by an intermediate rho(770) state, whereas the psi' decay is dominated by di-pion masses around 2.2 GeV/c(2), leading to strikingly different Dalitz distributions. (C) 2012 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:000303221800011
公开日期	2016-02-26
源URL	[http://ir.ihep.ac.cn/handle/311005/213224]
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 Callaboration. Precision measurement of the branching fractions of J/psi -> pi(+)pi(-)pi(0) and psi ' -> pi(+)pi(-)pi(0)[J]. PHYSICS LETTERS B,2012,710(4--5):594-599.
APA	BESIII Callaboration.(2012).Precision measurement of the branching fractions of J/psi -> pi(+)pi(-)pi(0) and psi ' -> pi(+)pi(-)pi(0).PHYSICS LETTERS B,710(4--5),594-599.
MLA	BESIII Callaboration."Precision measurement of the branching fractions of J/psi -> pi(+)pi(-)pi(0) and psi ' -> pi(+)pi(-)pi(0)".PHYSICS LETTERS B 710.4--5(2012):594-599.

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来源：高能物理研究所

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Precision measurement of the branching fractions of J/psi -> pi(+)pi(-)pi(0) and psi ' -> pi(+)pi(-)pi(0)

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