Higgs decays to muons in weak boson fusion

We investigate the muonic decay of a light Higgs boson, produced in weak bo son fusion at future hadron colliders. We find that this decay mode would b e observable at the CERN LHC only with an unreasonably large amount of data , while at a 200 TeV vLHC this process could be used to extract the muon Yu kawa coupling to about the 10%, level, or better if significant improvement s in detector design can be achieved. (C) 2001 Published by Elsevier Scienc e B.V.