  We investigate the formation of high-redshift supermassive black holes
(SMBHs) via the direct collapse of baryonic clouds, where the necessary
formation of molecular hydrogen is supressed by a Lyman-Werner (LW) photon
background from relic particle decay. We improve on existing studies by
dynamically simulating the collapse, accounting for the adiabatic contraction
of the DM halo, as well as the in-situ production of the LW photons within the
cloud which reduce the impact of the cloud's shielding. We find a viable
parameter space where the decay of either some or all of the dark matter could
successfully lead to the direct collapse of a SMBH.
