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Guo, FK; Hanhart, C; Kalashnikova, YS; Matuschek, P; Mizuk, RV; Nefediev, AV; Wang, Q; Wynen, JL; Guo, FK (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.; Guo, FK (reprint author), Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany.; Guo, FK (reprint author), Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany.
Interplay of quark and meson degrees of freedom in near-threshold states: A practical parametrization for line shapes
Source PublicationPHYSICAL REVIEW D
Language英语
AbstractWe 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.
2016
Volume93Issue:7Pages:74031
Subject AreaAstronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1103/PhysRevD.93.074031
Indexed BySCI
Funding OrganizationDFG ; DFG ; DFG ; DFG ; NSFC [11261130311] ; NSFC [11261130311] ; NSFC [11261130311] ; NSFC [11261130311] ; Russian Science Foundation [15-12-30014] ; Russian Science Foundation [15-12-30014] ; Russian Science Foundation [15-12-30014] ; Russian Science Foundation [15-12-30014] ; Thousand Talents Plan for Young Professionals ; Thousand Talents Plan for Young Professionals ; Thousand Talents Plan for Young Professionals ; Thousand Talents Plan for Young Professionals
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21682
CollectionSCI期刊论文
Corresponding AuthorGuo, FK (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.; Guo, FK (reprint author), Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany.; Guo, FK (reprint author), Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany.
Recommended Citation
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.,...&Guo, FK .(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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