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Weakly Coupled Neutral Currents

C. H. Albright*

R. J. Oakes†

  • Department of Physics, Northern Illinois University, DeKalb, Illinois 60115 and Institute for Atomic Research and Department of Physics, Iowa State University, Ames, Iowa 50010

  • Department of Physics, Northwestern University, Evanston, Illinois 60201

  • *Research supported in part by a Faculty Research Grant from Northern Illinois University. Work performed in part in the Ames Laboratory of the U. S. Atomic Energy Commission.
  • †Research supported by the U. S. Air Force Office of Scientific Research, Office of Aerospace Research, under AFOSR Grant No. 69-1761.
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Phys. Rev. D 2, 1883 – Published 1 November, 1970

DOI: https://doi.org/10.1103/PhysRevD.2.1883

Abstract

A general analysis of interactions of the current-current form involving neutral vector and axial-vector hadron and lepton currents is given and compared with present experimental information. While the restrictions placed upon such neutral current interactions by existing data are found to be rather severe, a number of theoretically attractive possibilities remain. Still consistent with experiment are models obeying the ΔI<32, ΔY<2 rule, a universal model based on the SU(2) algebra of charges, a model with a strangeness-conserving isovector neutral hadron current and symmetrically coupled lepton currents, and models in which the neutral currents couple only in a superweak fashion. In contrast, a model which incorporates the octet rule as a built-in symmetry appears to be ruled out on the basis of present information.

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  38. Omitted endnote

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Phys. Rev. D 2, 1883– Published 1 November, 1970
  • Received 20 July 1970

© 1970 American Physical Society

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