That the L/E flatness of the electron-like event ratio at Superkamiokande severely restricts the neutrino mixing matrices was first presented by D. V. Ahluwalia in a Nuclear and Particle Physics Seminar of the Los Alamos National Laboratory on June 5, 1998.
This idea was first introduced by D. V. Ahluwalia in a Nuclear and Particle Physics Seminar at Los Alamos National Laboratory on June 5, 1998, which showed that the L/E flatness of the electron-like event ratio at Superkamiokande severely constrains the neutrino mixing matrices.