Production of Y(4260) as a hadronic molecule state of (D)over-barD(1) + c.c. in e(+)e(-) annihilations

doi:10.1103/PhysRevD.94.054035

	Production of Y(4260) as a hadronic molecule state of (D)over-barD(1) + c.c. in e(+)e(-) annihilations
	Qin W(秦文); Xue SR(薛思润); Zhao Q(赵强); Qin, W; Xue, SR; Zhao, Q
刊名	PHYSICAL REVIEW D
	2016
卷号	94 期号:5
DOI	10.1103/PhysRevD.94.054035
通讯作者	秦文 ; 薛思润 ; 赵强
文献子类	Article
英文摘要	We study the Y(4260) production mechanism in e(+)e(-) annihilations in the framework of hadronic molecules and investigate the consequence of such a picture in different decay channels. In the hadronic molecule picture the Y(4260) is described as a mixture state composed of a long-ranged (D) over barD(1)(2420) + c.c. molecule state and a compact c (c) over bar component. We show that the compositeness relation can still provide a reasonable constraint on the wave function renormalization parameter due to the dominance of the molecular component. Such a mechanism can be regarded as a natural consequence of the heavy quark spin symmetry (HQSS) breaking. This study elaborates the molecular picture for the Y(4260) in the e(+)e(-) annihilations and affirms that the cross section line shape of e(+)e(-) -> (D) over barDpi + c.c. in the vicinity of the Y(4260) should have a nontrivial behavior. In this framework we predict that the upper limit of the Y(4260) leptonic decay width is about 500 eV. We also investigate the coupling for D-1(2420) -> Dpi in the P-3(0) quark model and examine the possible HQSS breaking effects due to the deviation from the \|P-1(1)> and \|P-3(1)> ideal mixing. This in turn provides a constraint on the HQSS breaking coupling for the Y(4260) to (D) over barD(1)(2420) + c.c. via its c (c) over bar component.
WOS关键词	QUARK-MODEL ; CHARMONIUM ; RESONANCES ; MESONS ; DECAY
语种	英语
WOS记录号	WOS:000384073200003
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/260667]
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	Qin W,Xue SR,Zhao Q,et al. Production of Y(4260) as a hadronic molecule state of (D)over-barD(1) + c.c. in e(+)e(-) annihilations[J]. PHYSICAL REVIEW D,2016,94(5).
APA	秦文,薛思润,赵强,Qin, W,Xue, SR,&Zhao, Q.(2016).Production of Y(4260) as a hadronic molecule state of (D)over-barD(1) + c.c. in e(+)e(-) annihilations.PHYSICAL REVIEW D,94(5).
MLA	秦文,et al."Production of Y(4260) as a hadronic molecule state of (D)over-barD(1) + c.c. in e(+)e(-) annihilations".PHYSICAL REVIEW D 94.5(2016).