Decay width of the d*(2380) -> NN pi process in a chiral constituent quark model

doi:10.1016/j.physletb.2017.03.058

	*Decay width of the d(2380) -> NN pi process in a chiral constituent quark model**
	Shen, Pengnian; Huang, Fei; Zhang ZY(张宗烨); Zhang, Zongye; Dong, Yubing; Dong YB(董宇兵); Shen PN(沈彭年)
刊名	PHYSICS LETTERS B
	2017
卷号	769 页码:223-226
关键词	d* (2380) Chiral quark model Strong decay Single-pion decay
ISSN号	0370-2693
DOI	10.1016/j.physletb.2017.03.058
文献子类	Article
英文摘要	The width of three-body single-pion decay process d* -> NN pi(0,+/-), is calculated by using the d* wave function obtained from our chiral SU(3) constituent quark model calculation. The effect of the dynamical structure on the width of d* is taken into account in both the single AA channel and coupled Delta Delta + CC two-channel approximations. Our numerical result shows that in the coupled-channel approximation, namely, the hidden-color configuration being considered, the obtained partial decay width of d* -> NN pi is about several hundred keV, while in the single Delta Delta channel it is just about 2 similar to 3 MeV. We, therefore, conclude that the partial width in the single-pion decay process of d* is much smaller than the widths in its double-pion decay processes. Our prediction may provide a criterion for judging different interpretations of the d* structure, as different pictures for the d* may result quite different partial decay width. (C) 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
电子版国际标准刊号	1873-2445
WOS关键词	MESON PRODUCTION ; COLLISIONS ; DIBARYON ; DELTA ; RESONANCES ; STATES
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
WOS记录号	WOS:000402342500036
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284475]
专题	高能物理研究所_理论物理室
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	Shen, Pengnian,Huang, Fei,Zhang ZY,et al. Decay width of the d*(2380) -> NN pi process in a chiral constituent quark model[J]. PHYSICS LETTERS B,2017,769:223-226.
APA	Shen, Pengnian.,Huang, Fei.,张宗烨.,Zhang, Zongye.,Dong, Yubing.,...&沈彭年.(2017).Decay width of the d*(2380) -> NN pi process in a chiral constituent quark model.PHYSICS LETTERS B,769,223-226.
MLA	Shen, Pengnian,et al."Decay width of the d*(2380) -> NN pi process in a chiral constituent quark model".PHYSICS LETTERS B 769(2017):223-226.