The Nucleon-Nucleon Interaction and Violation of Fundamental Symmetries

  • W. T. H. van Oers
Conference paper
Part of the Few-Body Systems book series (FEWBODY, volume 7)


The interplay of the nucleon-nucleon interaction and its observables with the “fundamental” symmetries of isospin conservation, parity conservation, time-reversal invariance or CP conservation was realized early on. Many tests of these symmetries through measurements of particular observables of the nucleon-nucleon interaction have been made over a time frame spanning some five decades. It is only in the last decade or so that levels of experimental accuracy have been reached that allow for the deduction of quantitative results of significance. Precision measurements have been made of charge symmetry breaking in n-p elastic scattering (which is the result of isospin non-conservation) and of parity violation in p-p scattering (which is a manifestation of the flavour conserving hadronic weak interaction). Time reversal invariance is much more dificult to study since in this case a null measurement, excluding transmission measurements, does not exist. In the nucleon-antinucleon system the potential exists of studying CP non-conservation in a system other than the kaon system. Unfortunately antiproton beams are at present of insufficient intensity.


Parity Violation Charge Symmetry Antiproton Beam Isotopic Spin Kaon System 
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Copyright information

© Springer-Verlag/Wien 1994

Authors and Affiliations

  • W. T. H. van Oers
    • 1
    • 2
  1. 1.Department of PhysicsUniversity of ManitobaWinnipegCanada
  2. 2.TRIUMFVancouverCanada

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