Massive Dark Photons as Hot Dark Matter

Abstract

Motivated by the growing interest in the existence of new massive gauge bosons, we suggest that massive dark photons A ′ can be a consequence of a broken new abelian symmetry U ( 1 ) ′ X . Such a dark symmetry U ( 1 ) ′ D is afterwards supposed to be associated with the conservation of the weak number W belonging to the Weakling Interacting Slim Particles U ( 1 ) W , being a strong candidate for Hot Dark Matter. The latters correspond then to light dark photons m ′ A . keV from a weak symmetry breaking scale & 10 keV .