Effects of Neutrino-Ultralight Dark Matter Interaction on the Cosmic Neutrino Background
| Title: | Effects of Neutrino-Ultralight Dark Matter Interaction on the Cosmic Neutrino Background |
|---|---|
| Authors: | Martínez-Miravé, Pablo, Perez-Gonzalez, Yuber F., Sen, Manibrata |
| Publication Year: | 2024 |
| Collection: | Astrophysics High Energy Physics - Experiment High Energy Physics - Phenomenology |
| Subject Terms: | High Energy Physics - Phenomenology, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment |
| More Details: | Ultralight dark matter interacting with sterile neutrinos would modify the evolution and properties of the cosmic neutrino background through active-sterile neutrino mixing. We investigate how such an interaction would induce a redshift dependence in neutrino masses. We highlight that cosmological constraints on the sum of neutrino masses would require reinterpretation due to the effective mass generated by neutrino-dark matter interactions. Furthermore, we present an example where such interactions can alter the mass ordering of neutrinos in the early Universe, compared to what we expect today. We also address the expected changes in the event rates in a PTOLEMY-like experiment, which aims to detect the cosmic neutrino background via neutrino capture, and discuss projected constraints. Comment: 10 pages, 4 figures |
| Document Type: | Working Paper |
| Access URL: | http://arxiv.org/abs/2406.01682 |
| Accession Number: | edsarx.2406.01682 |
| Database: | arXiv |
| Description not available. |