% Kaon_box_diagram.t1 -- generated from Kaon_box_diagram.mp
\fmfL(65.00125,94,t){$d$}%
\fmfL(234.99875,6,b){$\mu ^+$}%
\fmfL(65.00122,6,b){$\bar {s}$}%
\fmfL(150.00002,-6,t){$W^+$}%
\fmfL(94.00064,49.99998,r){$u\comma c$}%
\fmfL(150.00002,94,t){$W^-$}%
\fmfL(205.99936,50.00002,l){$\nu $}%
\fmfL(234.99878,94,t){$\mu ^-$}%