Interplay of quark and meson degrees of freedom in near-threshold states: A practical parametrization for line shapes | |
Guo, FK; Hanhart, C; Kalashnikova, YS; Matuschek, P; Mizuk, RV; Nefediev, AV; Wang, Q; Wynen, JL | |
刊名 | PHYSICAL REVIEW D |
2016 | |
卷号 | 93期号:7页码:74031 |
关键词 | Z(B) STATES X(3872) PARTICLES |
DOI | http://dx.doi.org/10.1103/PhysRevD.93.074031 |
英文摘要 | We propose a practical parametrization for the line shapes of near-threshold states compatible with all requirements of unitarity and analyticity. The coupled-channel system underlying the proposed parametrization includes bare poles and an arbitrary number of elastic and inelastic channels treated fully nonperturbatively. The resulting formulas are general enough to be used for a simultaneous analysis of the data in all available production and decay channels of the (system of) state(s) under consideration for a quite wide class of reactions. As an example, we fit the experimental data currently available for several decay channels for the charged Z(b)((r)) states in the spectrum of bottomonia and find a good overall description of the data. We find the present data to be consistent with the Z(b)(10610) as a virtual state and with the Z(b)(10650) as a resonance, both residing very close to the B (B) over bar* and B*(B) over bar* threshold, respectively. |
学科主题 | Astronomy & Astrophysics ; Physics |
语种 | 英语 |
资助机构 | DFG ; NSFC [11261130311] ; Russian Science Foundation [15-12-30014] ; Thousand Talents Plan for Young Professionals |
内容类型 | 期刊论文 |
源URL | [http://ir.itp.ac.cn/handle/311006/23188] |
专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
作者单位 | 1.Wang, Q.] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 2.[Hanhart, C. 3.Matuschek, P. 4.Wang, Q. 5.Wynen, J. -L.] Forschungszentrum Julich, Inst Adv Simulat, Inst Kernphys Theorie, D-52425 Julich, Germany 6.Wynen, J. -L.] Julich Ctr Hadron Phys, D-52425 Julich, Germany 7.[Kalashnikova, Yu. S. 8.Nefediev, A. V.] Inst Theoret & Expt Phys, B Cheremushkinskaya 25, Moscow 117218, Russia 9.[Mizuk, R. V.] Lebedev Phys Inst, Leninsky Prospect 53, Moscow 119991, Russia 10.[Mizuk, R. V. |
推荐引用方式 GB/T 7714 | Guo, FK,Hanhart, C,Kalashnikova, YS,et al. Interplay of quark and meson degrees of freedom in near-threshold states: A practical parametrization for line shapes[J]. PHYSICAL REVIEW D,2016,93(7):74031. |
APA | Guo, FK.,Hanhart, C.,Kalashnikova, YS.,Matuschek, P.,Mizuk, RV.,...&Wynen, JL.(2016).Interplay of quark and meson degrees of freedom in near-threshold states: A practical parametrization for line shapes.PHYSICAL REVIEW D,93(7),74031. |
MLA | Guo, FK,et al."Interplay of quark and meson degrees of freedom in near-threshold states: A practical parametrization for line shapes".PHYSICAL REVIEW D 93.7(2016):74031. |
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