Invisible neutrino decays as origin of TeV gamma rays from GRB221009A

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

Automated summary

Recently, the LHAASO collaboration has observed gamma rays with energies up to ten TeV from the gamma-ray burst GRB221009A, generating interest in the astronomy, particle physics, and astrophysics communities for possible interpretations. In this paper, a plausible scenario is proposed where neutrinos are produced alongside TeV photons in the gamma-ray burst and subsequently decay into axion-like particles, which then convert into gamma rays in the galactic magnetic fields. This scenario helps alleviate the tension between previous interpretations of axion-like particles and the observational constraints on relevant coupling constant and mass.