Abstract
The present study consists of establishing the role played by the next-to-leading order (NLO) terms as well as the Born terms of a chiral SU(3) Lagrangian in the S = −1 meson-baryon interaction. This necessarily leads to the determination of the low energy constants present in the NLO contribution, which have not been fixed so far. In order to constrain them, we employ scattering data from the K−p interaction, paying a special attention to reactions and to isospin filtering processes such as . In addition, the stability and the accuracy of all the parameters involved in the model have been examined by means of the inclusion of high spin hyperonic resonances.
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