Answer
The Neutrino Beam Method is a method developed by Schwartz, Lederman, and Steinberger in 1962 to detect the existence of the muon neutrino. The method involves using a beam of muons that are produced in a particle accelerator and then colliding them with protons in a target. If the muon neutrino exists, it will be produced in the collision and can be detected by its interaction with other particles.