Effect of Z(b) states gamma(3S) -> gamma(1S) pi pi decays

doi:http://dx.doi.org/10.1103/PhysRevD.93.034030

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	Effect of Z(b) states gamma(3S) -> gamma(1S) pi pi decays
	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.
刊名	PHYSICAL REVIEW D
	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
内容类型	期刊论文
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.