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Chiral unitary approach to the pi N*N*, eta N*N* couplings for the N* (1535) resonance
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Chiral unitary approach to the pi N*N*, eta N*N* couplings for the N* (1535) resonance
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| Nácher Díez, José Carlos; Parreño García, Assumpta; Oset Báguena, Eulogio Perfil; Ramos Gómez, Àngels; Hosaka, Atsushi; Oka, M. | |||
| This document is a artículoDate2000 | |||
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Este documento está disponible también en : http://hdl.handle.net/10550/46833 |
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| Using a chiral unitary model in which the negative parity nucleon resonance N∗≡N∗(1535) is generated dynamically by means of the Bethe Salpeter equation with coupled meson baryon channels in the S=0 sector, we have obtained the π0N∗N∗ and ηN∗N∗ couplings. The π0N∗N∗ coupling has smaller strength and the same sign as the π0NN coupling. This rules out the mirror assignment of chiral symmetry where the ground state nucleon N and the negative parity resonance N∗ are envisaged as chiral partners in the baryon sector. | |||
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Nácher Díez, José Carlos Parreño García, Assumpta Oset Báguena, Eulogio Ramos Gómez, Àngels Hosaka, Atsushi Oka, M. 2000 Chiral unitary approach to the pi N*N*, eta N*N* couplings for the N* (1535) resonance Nuclear Physics A 678 1-2 187 211 |
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| http://dx.doi.org/10.1016/S0375-9474(00)00311-0 |
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