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Discussion of Isotensor Terms and T Violation in Pion Photoproduction near the First Resonance

F. A. Berends

D. L. Weaver

  • Cambridge Electron Accelerator, Harvard University, and Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

  • Department of Physics, Tufts University, Medford, Massachusetts

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Phys. Rev. D 4, 1997 – Published 1 October, 1971

DOI: https://doi.org/10.1103/PhysRevD.4.1997

Abstract

An analysis is made of the presently available experimental and theoretical information for pion photoproduction and π− radiative capture near the first resonance with regard to the possibility of a violation of the ΔI≤1 rule, and the possibility of a T-violating electromagnetic current. An isotensor term is only one of the several possible explanations of the recent π− photoproduction data. The radiative-capture data near the first resonance support a substantial T violation in the magnetic dipole amplitude. However, it is not established that this T violation may be ascribed to a single isospin part of the amplitude. Some predictions for experimental tests are given which could clarify the situation.

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Information

Phys. Rev. D 4, 1997– Published 1 October, 1971
  • Received 11 June 1971

© 1971 American Physical Society

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