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<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mover accent="true"><mml:mi>K</mml:mi><mml:mo>¯</mml:mo></mml:mover><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:math>absorption within the framework of the fixed-center approximation to Faddeev equations
We present a method to evaluate the $\overline{K}$ absorption width in the bound $\overline{K}NN$ system. Most calculations of this system ignore this channel and only consider the $\overline{K}N\ensuremath{\rightarrow}\ensuremath{\pi}\ensuremath{\Sigma}$ conversion. Other works make a qualitative calculation using perturbative methods. Since the $\ensuremath{\Lambda}(1405)$ resonance is playing a role in the process, the …