The familiar model of a nucleon as a Dirac particle with Pauli anomalous magnetic moment is used to obtain cross sections for antiproton annihilation into two photons, two electrons, or two muons. The two-photon lifetime of the state of the proton-antiproton atom is sec.
- Received 27 December 1955
- Revised 1 May 1956
- Published in the issue dated August 1956
© 1956 The American Physical Society