Neutron oscillation as a source of cosmic ray antinucleons
We consider effects of neutron oscillation on cosmic ray antineutrons and antiprotons. Presently available experiments on the cosmic ray p-bar/p ratio lead to the direct lower bound of the mixing time of free neutron (deltam)/sup -1/> or approx. =2.5 x 10/sup 5/s If (deltam)/sup -1/> or approx. =10/sup 5/s as theoretically suggested, the effect gives (p-bar)/sub osc//p< or approx. =2 x 10/sup -7/ at low energies. Such an effect, if (deltam)/sup -1/s, would be seen in a low momentum region (Papprox.500 MeV/c) in future experiments.