| ABSTRACT: |
I report our recent work on neutrino diffraction whichwas found in position-dependent
probability of the neutrino in pion decay. Its origin is analyzed and connections with
unique properties of neutrino such as weak interaction with matter, realization as nonstationary
states, Lorentz invariance, and tiny mass are clarified. Fromthese properties,
diffraction pattern becomes macroscopic size of order 20-1000m, even though its de
Broglie wave length is 10¡Ý15m or less, and stable under the change of pion¡Çs energy
and other parameters. Consequently, the neutrino diffraction gives observable effects.
It modifies the neutrino flux in a manner that depends upon absolute neutrino mass.
Various puzzling phenomena such as LSND and energy dependent total cross sections
become understandable. Possible implications to T2K experiment will be presented
also. |
kek.jp) 