The Three-Pion Decays of the a(1) (1260)

doi:10.1088/0253-6102/70/1/60

	The Three-Pion Decays of the a(1) (1260)
	Zhang, Xu 1; Xie, Ju-Jun
刊名	COMMUNICATIONS IN THEORETICAL PHYSICS
	2018-07-01
卷号	70 页码:60-66
关键词	effective Lagagian approach axial-vector meson final state interactions
ISSN号	0253-6102
DOI	10.1088/0253-6102/70/1/60
英文摘要	We investigate the decay of a(1)+ (1260) -> pi(+) pi(+) pi(-) with the assumption that the a(1) (1260) is dynamically generated from the coupled channel rho pi and (K) over barK* interactions. In addition to the tree level diagrams that proceed via a(1)(+) (1260) -> rho(0)pi -> pi(+) pi(+) pi(-) , we take into account also the final state interactions of pi pi -> pi pi and (K) over barK -> pi pi. We calculate the invariant pi(+) pi(-) mass distribution and also the total decay width of a(1)+ (1260) -> pi(+) pi(+) pi(-) as a function of the mass of a(1) (1260). The calculated total decay width of a(1) (1260) is significantly different from other model calculations and tied to the dynamical nature of the a(1) (1260) resonance. The future experimental observations could test of model calculations and would provide vary valuable information on the relevance of the rho pi component in the a(1) (1260) wave function.
资助项目	National Natural Science Foundation of China[11475227] ; National Natural Science Foundation of China[11735003] ; Youth Innovation Promotion Association CAS[2016367]
WOS关键词	ENERGY HADRON PHYSICS ; AXIAL-VECTOR MESONS ; HIDDEN LOCAL SYMMETRY ; GAUGE BOSON ; RESONANCES ; QCD ; A(1)(1260) ; WIDTH
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000442075400010
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/59306]
专题	中国科学院近代物理研究所
通讯作者	Xie, Ju-Jun
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 101408, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xu,Xie, Ju-Jun. The Three-Pion Decays of the a(1) (1260)[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2018,70:60-66.
APA	Zhang, Xu,&Xie, Ju-Jun.(2018).The Three-Pion Decays of the a(1) (1260).COMMUNICATIONS IN THEORETICAL PHYSICS,70,60-66.
MLA	Zhang, Xu,et al."The Three-Pion Decays of the a(1) (1260)".COMMUNICATIONS IN THEORETICAL PHYSICS 70(2018):60-66.