Abstract
Theories with dark forces and dark sectors are of interest for dark matter models. In this paper we find the region in parameter space that is constrained by supernova cooling constraints when the models include dark sector particles with masses around 100 MeV or less. We include only interactions with electrons and positrons. The constraint is important for small mixing parameters.
Highlights
Theories with dark forces [1] are well-motivated extensions of the Standard Model (SM)
In this paper we find the region in parameter space that is constrained by supernova cooling constraints when the models include dark sector particles with masses around 100 MeV or less
Such extensions might provide an explanation for dark matter (DM), if it is assumed that new stable particles charged under the dark gauge group exist
Summary
Theories with dark forces [1] are well-motivated extensions of the Standard Model (SM). Some of us studied these constraints in WDs and determined that interesting parts of the parameter space which are or will be probed by experiments are already mostly excluded when the dark sector particle masses are ∼O (few tens of keV) [2]. Note that such light particles might already be problematic for big bang nucleosynthesis (BBN). The idea behind the astrophysical bounds on new particles is simple: if new particles are light enough to be produced in astrophysical bodies, they can possibly escape and generate excess cooling This could contradict the agreement between theoretical cooling models and. For related work involving only a dark photon, but no dark sector, see Refs. [11]
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