Effect of Z(b) states gamma(3S) -> gamma(1S) pi pi decays
文献类型：期刊论文
| 作者 | Chen, YH; Daub, JT; Guo, FK ; Kubis, B; Meissner, UG; Zou, BS; Chen, YH (reprint author), Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany.; Chen, YH (reprint author), Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany.
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2016 |
| 卷号 | 93期号:3页码:34030 |
| DOI | http://dx.doi.org/10.1103/PhysRevD.93.034030 |
| 英文摘要 | Within the framework of dispersion theory, we analyze the dipion transitions between the lightest gamma(nS) -> gamma(nS)pi pi states, with m < n <= 3. In particular, we consider the possible effects of two intermediate bottomoniumlike exotic states Z(b) (10610) and Z(b)(10650). The pi pi rescattering effects are taken into account in a model-independent way using dispersion theory. We confirm that matching the dispersive representation to the leading chiral amplitude alone cannot reproduce the peculiar two-peak pi pi mass spectrum of the gamma(3S) -> gamma(1S)pi pi. The existence of the bottomoniumlike Zb states can naturally explain this anomaly. We also point out the necessity of a proper extraction of the coupling strengths for the Z(b) states gamma(nS)pi, which is only possible if a Flatte- like parametrization is used in the data analysis for the Z(b) states. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/21760]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Chen, YH (reprint author), Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany.; Chen, YH (reprint author), Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany. |
| 推荐引用方式 GB/T 7714 | Chen, YH,Daub, JT,Guo, FK,et al. Effect of Z(b) states gamma(3S) -> gamma(1S) pi pi decays[J]. PHYSICAL REVIEW D,2016,93(3):34030. |
| APA | Chen, YH.,Daub, JT.,Guo, FK.,Kubis, B.,Meissner, UG.,...&Chen, YH .(2016).Effect of Z(b) states gamma(3S) -> gamma(1S) pi pi decays.PHYSICAL REVIEW D,93(3),34030. |
| MLA | Chen, YH,et al."Effect of Z(b) states gamma(3S) -> gamma(1S) pi pi decays".PHYSICAL REVIEW D 93.3(2016):34030. |
入库方式： OAI收割
来源：理论物理研究所
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