2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34593New four-dimensional black hole solutions of Brans-Dicke equations with a negative constant $ω$, coupled to a massless scalar field, are presented. The temperature of these black holes is zero and the horizon area is infinite. An astrophysical application is also discussed.4 pages, latex; v2 a reference and comment addedGeneral Relativity and Quantum CosmologyCold scalar-tensor black holes coupled to a massless scalar fieldtext