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Propagators of resonances and rescatterings of the decay products

Theoretical Physics Division, National Research Centre “Kurchatov Institute”, Petersburg Nuclear Physics Institute, Gatchina 188300, Russia

E-mail Address: aanisovi@thd.pnpi.spb.ru

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V. V. Anisovich

Theoretical Physics Division, National Research Centre “Kurchatov Institute”, Petersburg Nuclear Physics Institute, Gatchina 188300, Russia

E-mail Address: anisovic@thd.pnpi.spb.ru

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M. A. Matveev

Theoretical Physics Division, National Research Centre “Kurchatov Institute”, Petersburg Nuclear Physics Institute, Gatchina 188300, Russia

E-mail Address: matveev@thd.pnpi.spb.ru

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J. Nyiri

Institute for Particle and Nuclear Physics, Wigner RCP, Budapest 1121, Hungary

E-mail Address: nyiri@rmki.kfki.hu

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A. V. Sarantsev

Theoretical Physics Division, National Research Centre “Kurchatov Institute”, Petersburg Nuclear Physics Institute, Gatchina 188300, Russia

E-mail Address: andsar@iskp.uni-bonn.de

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, and

A. N. Semenova

http://orcid.org/0000-0003-2046-8826

Theoretical Physics Division, National Research Centre “Kurchatov Institute”, Petersburg Nuclear Physics Institute, Gatchina 188300, Russia

E-mail Address: ala.semenova@gmail.com

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https://doi.org/10.1142/S0217751X16501244Cited by:0 (Source: Crossref)

Abstract

Hadronic resonance propagators which take into account the analytical properties of decay processes are built in terms of the dispersion relation technique. Such propagators can describe multi-component systems, for example, those when quark degrees of freedom create a resonance state, and decay products correct the corresponding pole by adding hadronic deuteron-like components. Meson and baryon states are considered, examples of particles with different spins are presented.

Keywords:

PACS: 12.40.Yx, 12.39.-x, 14.40.Lb

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