Investigating sub-MeV dark matter annihilation to neutrinos using direct detection experiments
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2025
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866912592242409472 |
|---|---|
| author | Kamenetskaia, Boris Betancourt Park, Jong-Chul Reichard, Merlin Tomar, Gaurav |
| author_facet | Kamenetskaia, Boris Betancourt Park, Jong-Chul Reichard, Merlin Tomar, Gaurav |
| contents | Dark matter (DM) could self-annihilate into neutrinos in dense regions of the Universe. We consider the resulting flux of neutrinos from the Milky Way DM halo and derive exclusion limits on the annihilation cross-section using XENONnT electron recoil data. Assuming a $J$-factor independent of the annihilation cross-section, we find leading limits for DM masses below $\mathcal{O}$(MeV). Self-annihilating DM affects the DM halo via dissolution, introducing a cross-section dependency on the halo profile and thus the $J$-factor. We discuss such a situation in more detail, finding that the signal rate is below the experimental sensitivity of XENONnT, leaving the annihilation cross-section unconstrained. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_07403 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Investigating sub-MeV dark matter annihilation to neutrinos using direct detection experiments Kamenetskaia, Boris Betancourt Park, Jong-Chul Reichard, Merlin Tomar, Gaurav High Energy Physics - Phenomenology High Energy Physics - Experiment Dark matter (DM) could self-annihilate into neutrinos in dense regions of the Universe. We consider the resulting flux of neutrinos from the Milky Way DM halo and derive exclusion limits on the annihilation cross-section using XENONnT electron recoil data. Assuming a $J$-factor independent of the annihilation cross-section, we find leading limits for DM masses below $\mathcal{O}$(MeV). Self-annihilating DM affects the DM halo via dissolution, introducing a cross-section dependency on the halo profile and thus the $J$-factor. We discuss such a situation in more detail, finding that the signal rate is below the experimental sensitivity of XENONnT, leaving the annihilation cross-section unconstrained. |
| title | Investigating sub-MeV dark matter annihilation to neutrinos using direct detection experiments |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2505.07403 |