A possible experimental determination of $m_s/\hat{m}$ from $K_{\mu 4}$ decays

M. Knecht, H. Sazdjian, J. Stern +1

$K\pi$ scattering and $K_{\mu 4}$ decays are studied at leading order of improved chiral perturbation theory. It is shown that high precision $K_{\mu 4}$ experiments at, e.g., DA$\Phi$NE shou…