6533b7d5fe1ef96bd1264360
RESEARCH PRODUCT
Chiral dynamics of the p wave in K(-)p and coupled states
D. JidoEulogio Oset BáguenaÀNgels Ramos Gómezsubject
Nuclear TheoryHigh Energy Physics::PhenomenologyFísicadescription
We perform an evaluation of the p-wave amplitudes of meson-baryon scattering in the strangeness S=-1 sector starting from the lowest order chiral Lagrangians and introducing explicitly the Sigma^* field with couplings to the meson-baryon states obtained using SU(6) symmetry. The N/D method of unitarization is used, equivalent, in practice, to the use of the Bethe-Salpeter equation with a cut-off. The procedure leaves no freedom for the p-waves once the s-waves are fixed and thus one obtains genuine predictions for the p-wave scattering amplitudes, which are in good agreement with experimental results for differential cross sections, as well as for the width and partial decay widths of the Sigma^*(1385).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-01-01 |