The purpose of this communication is to present a coherent summary of the author's
theoreticaI proposals [1] concerning the new unstable particles. i Section 2 is devoted to …

Iioo LETTE RS TO THE EDITOR energies of these two observed particles and the angle
between them, the rest mass of the neutral particle which could produce a m-meson and a …

The large yield and striking stability of V-particles are tentatively interpreted in terms of the
so-called even-odd rulel), but since this rule is phenomenological in'natures several …

The general direct coupling between four fermions is studied. It is a linear combination of the
five invariants used in β-decay theory. Altering the order of the particles in the Hamiltonian …

Some properties are discussed of the θ 0, a heavy boson that is known to decay by the
process θ 0→ π++ π−. According to certain schemes proposed for the interpretation of …

where# N is the field operator for a particle with the value N for the quantum number in
question and X is an arbitrary number which is the same for all the particles. There are three …

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

HE present paper examines the reaction of negatively charged p,-mesons with atomic nuclei
on the hypothesis that the elementary process involved is the transition ner4 at Berkeley …

Matter has been found by experimental physicists to be made up of small particles of various
kinds, the particles of each kind being all exactly alike. Some of these kinds have definitely …

A new quantum number is introduced which leads to selection rules concerning transitions
between states with heavy particle number= 0. They are applied to the system nucleon …