  The H dibaryon channel, (I=0,J=0,S=-2), is revisited in the non-relativistic
quark cluster model (NRQCM) using a basis extended beyond the usual set of
baryon cluster pairs to include an explicit spatially symmetric 6q state,
analogous in structure to the MIT bag model H. We find that the binding
predicted using the two-baryon basis alone is significantly deepened by the
addition of the additional 6q configuration. The NRQCM thus appears, contrary
to earlier findings, to be incompatible with the experimental information
available for this channel.
