2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/216925The hidden scalar field, which couples to the visible sector only through Planck-suppressed interactions, is a candidate for dark matter owing to its long lifetime. Decay of such a scalar field offers observational tests of this scenario. We show that decay of the hidden scalar field can explain the observed excess of high-energy positrons/electrons observed by ATIC/PPB-BETS, for a suitable choice of the mass and the vacuum expectation value of the field. We also show that the same choice of the parameters gives the observed dark matter abundance. Such a remarkable coincidence suggests that the Planck-suppressed interactions may be responsible for the observed excess in the cosmic-ray positrons/electrons.11 pages, 1 figureCosmology and Nongalactic AstrophysicsGeneral Relativity and Quantum CosmologyHigh Energy Physics - Phenomenologytext