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Guo, FK; Hanhart, C; Kalashnikova, YS; Matuschek, P; Mizuk, RV; Nefediev, AV; Wang, Q; Wynen, JL
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
KeywordZ(B) STATES X(3872) PARTICLES
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 ; NSFC [11261130311] ; Russian Science Foundation [15-12-30014] ; Thousand Talents Plan for Young Professionals
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/23188
Collection理论物理所科研产出_SCI论文
Affiliation1.[Guo, F. -K.] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
2.[Guo, F. -K.
3.Wang, Q.] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany
4.Wang, Q.] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany
5.[Hanhart, C.
6.Matuschek, P.
7.Wang, Q.
8.Wynen, J. -L.] Forschungszentrum Julich, Inst Adv Simulat, Inst Kernphys Theorie, D-52425 Julich, Germany
9.Wynen, J. -L.] Julich Ctr Hadron Phys, D-52425 Julich, Germany
10.[Kalashnikova, Yu. S.
11.Nefediev, A. V.] Inst Theoret & Expt Phys, B Cheremushkinskaya 25, Moscow 117218, Russia
12.[Mizuk, R. V.] Lebedev Phys Inst, Leninsky Prospect 53, Moscow 119991, Russia
13.[Mizuk, R. V.
14.Nefediev, A. V.] Natl Res Nucl Univ MEPhI, Kashirskoe Highway 31, Moscow 115409, Russia
15.Nefediev, A. V.] Moscow Inst Phys & Technol, 9 Inst Sky Lane, Dolgoprudnyi 141700, Moscow Region, Russia
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.,...&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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