Geoff Beck, Mukesh Kumar, Elias Malwa, Bruce Mellado, Ralekete Temo
Published 2021-02-21Version 1
Multi-lepton anomalies at the Large Hadron Collider are reasonably well described by a two Higgs doublet model with an additional singlet scalar. Here, we demonstrate that using this model we are also able to describe the excesses in gamma-ray flux from the galactic centre and the cosmic-ray spectra from AMS-02. This is achieved through Dark Matter (DM) annihilation via the singlet scalar. Of great interest is the flux of synchrotron emissions which results from annihilation of DM in Milky-Way satellites. We make predictions for MeerKAT observations of the nearby dwarf galaxy Reticulum~II and we demonstrate the power of this instrument as a new frontier in indirect dark matter searches.
Comments: 8 pages, 3 Figures, This paper is dedicated to the memory of Sergio Colafrancesco, who was instrumental in bringing together the study of LHC and astrophysical anomalies presented here
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