Charge Independence and Symmetry of Nuclear Forces

Abstract

Charge independence and symmetry are approximate symmetries of nature. The observations of the small symmetry breaking effects and the consequences of those effects are reviewed. The effects of the mass difference between up and down quarks and the off shell dependence $q^2$ of ${\rho }^0$-$\omega$ mixing are stressed. In particular, I argue that models which predict a strong $q^2$ dependence of ${\rho }^0$-$\omega$ mixing seem also to predict a strong $q^2$ variation for the ${\rho }^0$-${\gamma }^{\ast }$ matrix element, in contradiction with experiment.

15 pages, 9 figures, available from Miller by ordinary mail. U. WA. Preprint DOE/ER/40427-09-N94

References in corpus (1)

• pi-NN Coupling Constants from NN Elastic Data between 210 and 800 Mev

Cited by in corpus (3)

• Charge-Symmetry-Breaking Three-Nucleon Forces
• Large-$N_c$ analysis of two-nucleon neutrinoless double beta decay and charge-independence-breaking contact terms
• The Okamoto-Nolen-Schiffer anomaly without rho-omega mixing