2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/2385Self-interacting dark matter has been suggested in order to overcome the difficulties of the Cold Dark Matter model on galactic scales. We argue that a scalar gauge singlet coupled to the Higgs boson, leading to an invisibly decaying Higgs, is an interesting candidate for this self-interacting dark matter particle.Talk given by R. Rosenfeld at Cosmology 2000, Lisbon, July 12-15th. To be published in the electronic Proceedings. One reference addedAstrophysicstext