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arXiv · 1502.07956

The $\bar{K} N \rightarrow K \Xi$ reaction in coupled channel chiral models up to next-to-leading order

A. Feijoo·V. K. Magas·A. Ramos
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Abstract

The meson-baryon interaction in s-wave in the strangeness S=-1 sector has been studied, employing a chiral SU(3) Lagrangian up to next-to-leading order (NLO) and implementing unitarization in coupled channels. The parameters of the Lagrangian have been fitted to a large set of experimental data in different two-body channels, paying special attention to the $\bar{K} N \rightarrow K \Xi$ reaction, which is particularly sensitive to the NLO terms. With the aim of improving the model in the $K\Xi$ production channels, effects of the high spin hyperon resonances $\Sigma(2030)$ and $\Sigma(2250)$ have been taken into account phenomenologically.

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A. Feijoo, V. K. Magas, A. Ramos. 2015-02-26. The $\bar{K} N \rightarrow K \Xi$ reaction in coupled channel chiral models up to next-to-leading order. https://arxiv.org/abs/1502.07956

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