Description of the [Formula omitted] and [Formula omitted] states as molecular states

Description of the [Formula omitted] and [Formula omitted] states as molecular states

In this work we study several [Formula omitted] and [Formula omitted] states dynamically generated from the meson-baryon interaction in coupled channels, using an extension of the local hidden gauge approach in the Bethe-Salpeter equation. These molecular states appear as poles of the scattering amp...

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Veröffentlicht in:The European physical journal. C, Particles and fields Particles and fields, 2019-02, Vol.79 (2), p.1-14
Hauptverfasser: Yu, Q. X, Pavao, R, Debastiani, V. R, Oset, E
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container_title The European physical journal. C, Particles and fields
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creator Yu, Q. X
Pavao, R
Debastiani, V. R
Oset, E
description In this work we study several [Formula omitted] and [Formula omitted] states dynamically generated from the meson-baryon interaction in coupled channels, using an extension of the local hidden gauge approach in the Bethe-Salpeter equation. These molecular states appear as poles of the scattering amplitudes, and several of them can be identified with the experimentally observed [Formula omitted] states, including the [Formula omitted], [Formula omitted], [Formula omitted], [Formula omitted] and [Formula omitted]. Also, for the recently reported [Formula omitted] state, we find two poles with masses and widths remarkably close to the experimental data, for both the [Formula omitted] and [Formula omitted] sectors.
doi_str_mv 10.1140/epjc/s10052-019-6665-z
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subjects Poles
title Description of the [Formula omitted] and [Formula omitted] states as molecular states
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