Abstract
Using CSW rules for constructing scalar Feynman diagrams
from MHV vertices, we compute the contribution of 
= 1
chiral multiplet to one-loop MHV gluon amplitude. The result agrees
with the one obtained previously using unitarity-based methods,
thereby demonstrating the validity of the MHV-diagram technique, in
the case of one-loop MHV amplitudes, for all massless supersymmetric
theories.
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