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Phenomenology of near-threshold states: a practical parametrisation for the line shapes
Guo, FK; Hanhart, C; Kalashnikova, YS; Matuschek, P; Mizuk, RV; Nefediev, AV; Wang, Q; Wynen, JL
Conference Name12th Conference on Quark Confinement and the Hadron Spectrum
PagesUNSP 06020
Conference DateAUG 29-SEP 03, 2016
Conference PlaceThessaloniki, GREECE
Publication PlaceCEDEX A

In the last decade many states in the spectrum of charmonium and bottomonium have been observed experimentally above the lowest open-flavour threshold. Most of these states reside in the vicinity of strong thresholds and show properties that cannot be captured by simple quark models. Description and understanding of such exotic states is a challenge for the phenomenology of strong interactions, since it requires building adequate theoretical tools and approaches. In this work, a practical parametrisation for the line shapes of near threshold resonance(s) is derived in the framework of a coupled-channel model which includes an arbitrary number of elastic and inelastic channels as well as of bare pole terms. Parameters of the distribution have a direct relation to phenomenology and the resulting analytical parametrisation is therefore ideally suited to harvest the full information content provided by the measurements and to establish a link between the experimental data and their theoretical interpretation.

Indexed ByCPCI
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
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Document Type会议论文
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.
13.Nefediev, A. V.] Natl Res Nucl Univ MEPhI, Kashirskoe Highway 31, Moscow 115409, Russia
14.[Mizuk, R. V.] Lebedev Phys Inst, Leninsky Prospect 53, Moscow 119991, Russia
15.[Mizuk, R. V.
16.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. Phenomenology of near-threshold states: a practical parametrisation for the line shapes[C]. CEDEX A:E D P SCIENCES,2017:UNSP 06020.
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