Invisible neutrino decays as origin of TeV gamma rays from GRB221009A

Abstract Recently, the LHAASO collaboration has observed gamma rays of energies up to ten TeV from gamma-ray burst GRB221009A, which stimulated community astronomy, particle physics and astrophysics propose various possible interpretations. In this paper, we put forward a viable scenario that neutrinos are produced together with photons in gradually decay into axion-like particles, then converted galactic magnetic fields. such scenario, tension between previous interpretations existing observational constraints on relevant coupling constant mass can be relaxed.