Weak-Interaction Singlet and Strong CP Invariance

Phys. Rev. Lett. 43, 103 – Published 9 July 1979
Jihn E. Kim


Strong CP invariance is automatically preserved by a spontaneously broken chiral U(1)4 symmetry. A weak-interaction singlet heavy quark Q, a new scalar meson σ0, and a very light axion are predicted. Phenomenological implications are also included.

DOI: http://dx.doi.org/10.1103/PhysRevLett.43.103

  • Received 16 February 1979
  • Published in the issue dated 9 July 1979

© 1979 The American Physical Society

Authors & Affiliations

Jihn E. Kim

  • Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104

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