Axion-like particles (ALPs) with MeV masses can be produced with semi-relativistic velocities in core-collapse supernovae (SNe). In this talk, I will demonstrate that a diffuse galactic flux of ALPs arises from the accumulated fluxes of past SNe and that these ALPs can be detected in neutrino water Cherenkov detectors via $a$ $p$ $\rightarrow$ $p$ $\gamma$ interactions. Using Super-Kamiokande...
In this talk we show that, if axion-like particles (ALPs) from core-collapse supernovae (SNe) couple to protons, they would produce very characteristic signatures in neutrino water Cherenkov detectors through their scattering off free protons via $a \, p \rightarrow p \, \gamma$ interactions. Specifically, sub-MeV ALPs would generate photons with energies $\sim 30$ MeV, which could be observed...
