Orateur
Tiziana Scarna
(ULB)
Description
We show that there exists only a quite limited number of higher dimensional operators which can naturally lead to a slow decay of dark matter particles into monochromatic photons. As each of these operators inevitably induces decays into particles other than photons, we show that the gamma-lines it induces are always accompanied by a continuum flux of cosmic rays. Hence constraints on cosmic-ray fluxes imply constraints on the intensity of gamma-lines and vice-versa. A comparison with up to date observational bounds shows the possibilities to observe or exclude cosmic rays associated to gamma-line emission, so that one could better determine the properties of the DM particle, possibly discriminating between some of the operators.
Auteurs principaux
Dr
Michael Gustafsson
(ULB)
Dr
Thomas Hambye Hambye
(Service de Physique Theorique, Universite Libre de Bruxelles)
Tiziana Scarna
(ULB)
