Description of the $$\Xi _c$$ Ξc and $$\Xi _b$$ Ξb states as molecular states
Abstract In this work we study several $$\Xi _c$$ Ξc and $$\Xi _b$$ Ξb 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 am...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2019-02-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-019-6665-z |
| Summary: | Abstract In this work we study several $$\Xi _c$$ Ξc and $$\Xi _b$$ Ξb 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 $$\Xi _c$$ Ξc states, including the $$\Xi _c(2790)$$ Ξc(2790) , $$\Xi _c(2930)$$ Ξc(2930) , $$\Xi _c(2970)$$ Ξc(2970) , $$\Xi _c(3055)$$ Ξc(3055) and $$\Xi _c(3080)$$ Ξc(3080) . Also, for the recently reported $$\Xi _b(6227)$$ Ξb(6227) state, we find two poles with masses and widths remarkably close to the experimental data, for both the $$J^P=1/2^-$$ JP=1/2- and $$J^P=3/2^-$$ JP=3/2- sectors. |
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| ISSN: | 1434-6044 1434-6052 |