The Milky Way is a Laboratory for New Ultra-long-baseline Neutrino Physics
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866911041397456896 |
|---|---|
| author | MacDonald, Miller Carloni, Kiara Argüelles, Carlos A. Batista, Rafael Alves Martínez-Soler, Ivan |
| author_facet | MacDonald, Miller Carloni, Kiara Argüelles, Carlos A. Batista, Rafael Alves Martínez-Soler, Ivan |
| contents | The IceCube Neutrino Observatory recently published evidence for diffuse neutrino emission from the Galactic Plane at $4.5σ$ significance. This new source of astrophysical neutrinos provides an exciting laboratory for probing the nature of neutrino masses. In particular, extremely small mass splittings, such as those predicted by quasi-Dirac neutrino mass models, and finite neutrino lifetimes from neutrino decays, would induce effects on the spectra and flavor ratios of neutrinos with TeV-scale energies traversing kiloparsec-scale baselines. Using $\mathtt{TANDEM}$, an upcoming three dimensional galactic neutrino emission model, we explore the sensitivity of IceCube and KM3NeT/ARCA to these ultra-long-baseline phenomena. We find that a combined analysis would be sensitive to quasi-Dirac mass splittings $10^{-14.0}~\mathrm{eV^2} \lesssim δm^2 \lesssim 10^{11.6}~\mathrm{eV^2}$ and neutrino lifetimes $m / τ\gtrsim 10^{-14.1}~\mathrm{eV^2}$ at $> 1σ$, both regions constituting as-yet unexplored parameter space. Our results demonstrate the potential that astrophysical neutrino sources and global neutrino telescope networks have in probing new regions of exotic neutrino mass models. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_04193 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Milky Way is a Laboratory for New Ultra-long-baseline Neutrino Physics MacDonald, Miller Carloni, Kiara Argüelles, Carlos A. Batista, Rafael Alves Martínez-Soler, Ivan High Energy Physics - Phenomenology High Energy Astrophysical Phenomena The IceCube Neutrino Observatory recently published evidence for diffuse neutrino emission from the Galactic Plane at $4.5σ$ significance. This new source of astrophysical neutrinos provides an exciting laboratory for probing the nature of neutrino masses. In particular, extremely small mass splittings, such as those predicted by quasi-Dirac neutrino mass models, and finite neutrino lifetimes from neutrino decays, would induce effects on the spectra and flavor ratios of neutrinos with TeV-scale energies traversing kiloparsec-scale baselines. Using $\mathtt{TANDEM}$, an upcoming three dimensional galactic neutrino emission model, we explore the sensitivity of IceCube and KM3NeT/ARCA to these ultra-long-baseline phenomena. We find that a combined analysis would be sensitive to quasi-Dirac mass splittings $10^{-14.0}~\mathrm{eV^2} \lesssim δm^2 \lesssim 10^{11.6}~\mathrm{eV^2}$ and neutrino lifetimes $m / τ\gtrsim 10^{-14.1}~\mathrm{eV^2}$ at $> 1σ$, both regions constituting as-yet unexplored parameter space. Our results demonstrate the potential that astrophysical neutrino sources and global neutrino telescope networks have in probing new regions of exotic neutrino mass models. |
| title | The Milky Way is a Laboratory for New Ultra-long-baseline Neutrino Physics |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2507.04193 |