Electroweak corrections to the decay H+→W+h in the Minimal Supersymmetric Model

We calculate the O(αewmt(b)2/mW2) and O(αewmt(b)4/mW4) supersymmetric electroweak corrections to the process H+→W+h in the Minimal Supersymmetric Model. These corrections arise from the virtual effects of the third family quarks (top and bottom) and squarks (top-squark and bottom-squark). We find that for mH+>200 GeV at low tanβ(⩽3), the corrections can increase the tree-level decay widths and the branching radios more than 20% and 40%, respectively.