Department of Physics and I. aboratory for nuclearScience, Massachusetts Institute of
Technology, Cambridge, Massachusetts (Received March 4, 1957)''T has been …

The distribution of the decay electrons from polarized μ mesons is calculated, without
presumption of parity conservation, time-reversal invariance, or charge-conjugation …

&HE recent experiments of Sagane, Qardner, and Hubbard'on. the continuous beta-
spectrum in the p, decay seem to indicate that the spectrum goes to zero at the upper limit …

The two-component neutrino theory of LEE and YANG (1) predicts that muons from~-~
decay'should be completely polarized along their direction of motion, and the electrons from …

The assumption of vanishing neutrino mass leads to a group of transformations of the
neutrino field which leave commutation relations and free-field Hamiltonian invariant but …

Earlier summaries of Jl-meson interactions and properties are given in references (1 to 7).
We shall confine our attention in this paper principally to recent developments. The most …

Abstract 6149 complete π-μ-e events have been measured in nuclear emulsion. 3021
events were in ordinary Ilford G5 emulsion and 3128 were in G5 emulsion containing twice …

(2) The spectrum of positrons emitted in the decay of u-mesons does not contradict the
conjecture that the two neutral particles produced during this decay are identical and obey …

Some consequences of the assumption that every interaction which exists in Nature never
allows us to determine the signs of masses of all elementary particles, are discussed. The …

Assuming the symmetric coupling scheme proposed by Wheeler and Tiomno, and others,
we have calculated the ratio of the decay rate π− meson→ electron+ neutrino to the decay …