http://arxiv.org/abs/2203.09282
We explore a new class of simplified extensions to the Standard Model containing a complex singlet scalar as a dark matter candidate accompanied by a vector-like lepton as a mediator, both charged under a $Z_3$ symmetry. In its simplest form, the new physics couples only to right-handed electrons, and the model is able to accommodate the correct dark matter relic abundance around the electroweak scale up to several TeV evading the strongest constraints from perturbativity, collider and dark matter searches. Furthermore, the model is capable to enhance naturally positron fluxes by several orders of magnitude presenting box-shape spectra, and keeping sizable signals of gamma-rays. This framework opens up a lot of phenomenological possibilities depending on the quantum charge assignments of the new fields.
B. Sáez and K. Ghorbani
Fri, 18 Mar 22
24/66
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