Rescattering effects of baryon and antibaryon in heavy quarkonium decays

	Rescattering effects of baryon and antibaryon in heavy quarkonium decays
	Chen, H; Ping, RG; Ping RG(平荣刚)
刊名	PHYSICS LETTERS B
	2007
卷号	644 期号:1 页码:#REF!
关键词	rescattering effects heavy quarkonium baryon
通讯作者	Ping, RG (reprint author), Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China.
英文摘要	Rescattering effects of baryon and antibaryon in heavy quarkonium decays are investigated by studying their angular distributions. The rescattering amplitudes are phenomenologically evaluated by modeling the intermediate range interaction as a a or pion meson exchange between q (q) over bar quarks. The results show that the rescattering effects play an important role in determination of the angular distribution in heavy quarkonium decays. Especially, for J/psi and psi(2S) decays into Lambda(Lambda) over bar, Sigma(0)(Sigma) over bar (0) and Xi(-)(Xi) over bar (+) the angular distribution parameters could turn to be negative values in the limit of helicity conservation. These results provide us a possible explanation for understanding the negative sign of the angular distribution parameter measured for J/psi -> Sigma(0)(Sigma) over bar (0), namely, it might come from the baryonic SU(3)(F) symmetry breaking by incorporating rescattering effects. (c) 2006 Elsevier B.V. All rights reserved.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
WOS记录号	WOS:000243550200010
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225784]
专题	高能物理研究所_理论物理室高能物理研究所_实验物理中心
推荐引用方式 GB/T 7714	Chen, H,Ping, RG,Ping RG. Rescattering effects of baryon and antibaryon in heavy quarkonium decays[J]. PHYSICS LETTERS B,2007,644(1):#REF!.
APA	Chen, H,Ping, RG,&平荣刚.(2007).Rescattering effects of baryon and antibaryon in heavy quarkonium decays.PHYSICS LETTERS B,644(1),#REF!.
MLA	Chen, H,et al."Rescattering effects of baryon and antibaryon in heavy quarkonium decays".PHYSICS LETTERS B 644.1(2007):#REF!.