Heavy neutrino search in accelerator-based experiments

Understand

We explore the feasibility of detecting heavy neutrinos by the existing facilities of neutrino experiments.

• A heavy neutrino in the mass range 1 MeV < M < 500 MeV is produced by pion or kaon decay, and decays to charged particles which leave signals in neutrino detectors.
• Taking the T2K experiment as a typical example, we estimate the heavy neutrino flux produced in the neutrino beam line.
• Due to massive nature of the heavy neutrino, the spectrum of the heavy neutrino is significantly different from that of the ordinary neutrinos.