LETTERS To EDITOR the decay of the pion except for the apparent absence of the electron
mode,'and all existing results on strange particle decays (except for the decay of the hyperon …

The representation of Fermi particles by two-component Pauli spinors satisfying a second
order differential equation and the suggestion that in β decay these spinors act without …

Department of Physics and Institute for Nuclear Studies, University of Chicago, Chicago,
Illinois (Received August 21, 1953)'gEASLEE'has considered the interesting possibility that …

small. Increasing W, and W, decreases the mag-nitude of both curves slightly. In fitting the P-
state curve, V, and V, have opposite effects on the ratio of peak heights. Increasing V …

As early as1948the great similarity in the strength of the coupling constants in beta decay,
muon decay, and muon capture had tempted several authors''to postulate a universal Fermi …

I neutrino. This conclusion has not been changed in the light of recent work on the
nonconservation of parity in weak interactions.'However, experiments by Lokanathan and …

On the basis of the hypothesis that the same form of interaction acts among any spin-½
particles, it is interesting to apply the interaction law found for β decay to the muon …

The parity-non-conserving, VA form of Fermi interaction is derived from a principle of
invariance under a continuous group of transformations, in analogy with the ordinary gauge …

In order to derive in a convincing manner the formula of Goldberger and Treiman for the rate
of charged pion decay, we consider the possibility that the divergence of the axial vector …

The measure of the asymmetry fS as a function of y gives t'a and tP. The magnitude of the
parameter f, which isthe degree of polarization of the p meson, depends on the …