| Full text | |
| Author(s): |
Bhattacharya, Atri
;
Esmaili, Arman
;
Palomares-Ruiz, Sergio
;
Sarcevic, Ina
Total Authors: 4
|
| Document type: | Journal article |
| Source: | Journal of Cosmology and Astroparticle Physics; v. N/A, n. 5, p. 30-pg., 2019-05-01. |
| Abstract | |
In view of the IceCube's 6-year high-energy starting events (HESE) sample, we revisit the possibility that the updated data may be better explained by a combination of neutrino fluxes from dark matter decay and an isotropic astrophysical power-law than purely by the latter. We find that the combined two-component flux qualitatively improves the fit to the observed data over a purely astrophysical one, and discuss how these updated fits compare against a similar analysis done with the 4-year HESE data. We also update fits involving dark matter decay via multiple channels, without any contribution from the astrophysical flux. We find that a DM-only explanation is not excluded by neutrino data alone. Finally, we also consider the possibility of a signal from dark matter annihilations and perform analogous analyses to the case of decays, commenting on its implications. (AU) | |
| FAPESP's process: | 09/54213-0 - Update for the high-performance computer cluster of the Institute of Physics Gleb Wataghin |
| Grantee: | Maurice de Koning |
| Support Opportunities: | Multi-user Equipment Program |