Production of Y(4260) as a hadronic molecule state of (D)over-barD(1) + c.c. in e(+)e(-) annihilations
文献类型：期刊论文
| 作者 | Qin W(秦文) ; Xue SR(薛思润); Zhao Q(赵强); Qin, W; Xue, SR; Zhao, Q
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 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 barD*pi + 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) -> D*pi 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 |
| 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). |
入库方式： OAI收割
来源：高能物理研究所
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