Nowadays it has become customary in nuclear physics to denote by “tradition” the approach that considers nucleons and mesons as the relevant degrees of freedom. It is the purpose of this chapter to review this “traditional” approach in the area of nuclear forces and their applications to nuclear structure.

The Meson Theory of Nuclear Forces and Nuclear Structure

Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions

Charge symmetry, quarks and mesons

$\rho - \omega$ mixing, vector meson dominance and the pion form-factor

▪ Abstract Charge symmetry breaking (CSB) in the strong interaction occurs because of the difference between the masses of the up and down quarks. The use of effective field theories allows us to follow this influence of confined quarks in hadronic and nuclear systems. We review the progress in observing and understanding CSB, with particular attention to the recent successful observations of CSB in measurements involving the production of a single neutral pion, and to the related theoretical progress.

https://www.annualreviews.org/doi/pdf/10.1146/annurev.nucl.56.080805.140446

Charge Symmetry Breaking and QCD

The particle physics input to the NN charge asymmetric potential due to rho-..omega.. mixing is updated. The calculated changes in scattering lengths chemically bonda/sub nn/chemically bond-chemically bonda/sub pp/chemically bondapprox.1.3 +- 0.2 fm are in good agreement with experiment (approx.1.4 +- 0.8 fm), as are the contributions to the binding energy difference in the A = 3 mirror nuclei.

Roger C. Barrett

Papers

rho - omega mixing in nuclear charge asymmetry.