Probing a diffuse flux of axionlike particles from Galactic supernovae with neutrino water Cherenkov detectors
Year: 2025
Type: article
Abstract: In this article, we claim that axionlike particles (ALPs) with MeV masses can be produced with semirelativistic velocities in core-collapse supernovae (SNe), generating a diffuse galactic flux. We show that these ALPs can be detected in neutrino water Cherenkov detectors via a p → p γ interactions. Using Super-Kamiokande data, we derive new constraints on the ALP parameter space, excluding a region spanning more than one order of magnitude in the ALP-proton coupling above cooling bounds for ALP masses in the range of 1–80 MeV and ALP-proton couplings between 8 × 10 − 6 – 2 × 10 − 4 . We show that the future Hyper-Kamiokande will be able to probe couplings as small as 2.5 × 10 − 6 , fully closing the allowed region above SN 1987A cooling bounds.
Institutions: Instituto de Física Teórica, Universidad Autónoma de Madrid
Language: English
Topic: Neutrino Physics Research
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4409480156