UFRGS-HEP Journal Club
Friday 16 February 2024 -
13:30
Monday 12 February 2024
Tuesday 13 February 2024
Wednesday 14 February 2024
Thursday 15 February 2024
Friday 16 February 2024
13:30
Ramiro
Ramiro
13:30 - 14:30
Probing sterile neutrino dark matter in the PTOLEMY-like experiment Ki-Young Choi, Erdenebulgan Lkhagvadorj, Seong Moon Yoo Journal of Cosmology and Astroparticle Physics, 2023, 021 (2023) Hide abstract | Show figures | Show BibTeX | Show discussion | View PDF | 2212.14192v2 We study the prospect to detect the cosmic background of sterile neutrinos in the Tritium β-decay, such as PTOLEMY-like experiments. The sterile neutrino with mass between 1 eV - 10 keV may contribute to the local density as warm or cold DM component. In this study, we investigate the possibility for searching them in the models with different production in the early Universe, without assuming sterile neutrino as full dark matter component. In these models, especially with low-reheating temperature or phase transition, the capture rate per year can be greatly enhanced to be O(10) without violating other astrophysical and cosmological observations.