An effective field theory framework is proposed to study $\bar Kd$ scattering at threshold. At lowest order, the approach reproduces the well-known result obtained by the re-summation of the multiple-scattering series in the static limit. It has been demonstrated that the approach enables one to systematically evaluate corrections to the lowest-order result.

The conclusion of this study is that the chamber performances are better than those obtained with Ar-based mixture.