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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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
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.

    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
http://dx.doi.org/10.1016/S0375-9474(00)00311-0
distribuido bajo licencia Creative Commons de Reconocimiento-NoComercial 3.0 No adaptada

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