The<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mover><mml:mi>K</mml:mi><mml:mo>¯</mml:mo></mml:mover><mml:mi>N</mml:mi><mml:mo>→</mml:mo><mml:mi>K</mml:mi><mml:mi mathvariant="normal">Ξ</mml:mi></mml:mrow></mml:math>reaction in coupled-channels chiral models up to next-to-leading order
Journal: Physical Review C
Year: 2015

The meson-baryon interaction in $s$ wave in the strangeness $S=\ensuremath{-}1$ 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 $\overline{K}N\ensuremath{\rightarrow}K\mathrm{\ensuremath{\Xi}}$ reaction, which is particularly sensitive to the NLO term