  We propose an alternative implementation of the curvaton mechanism for
generating the curvature perturbations which does not rely on a late decaying
scalar decoupled from inflation dynamics. In our mechanism the supersymmetric
Higgs scalars are coupled to the inflaton in a hybrid inflation model, and this
allows the conversion of the isocurvature perturbations of the Higgs fields to
the observed curvature perturbations responsible for large scale structure to
take place during reheating. We discuss an explicit model which realises this
mechanism in which the $\mu$ term in the Higgs superpotential is generated
after inflation by the vacuum expectation value of a singlet field. The main
prediction of the model is that the spectral index should deviate significantly
from unity, $|n-1|\sim 0.1$. We also expect relic isocurvature perturbations in
neutralinos and baryons, but no significant departures from gaussianity and no
observable effects of gravity waves in the CMB spectrum.
