Chiral weak dynamics
- 23 July 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 65 (4) , 404-407
- https://doi.org/10.1103/physrevlett.65.404
Abstract
We derive a chiral weak Lagrangian which interpolates the QCD-corrected-four-fermion weak-interaction Lagrangian to low energies. This is done using the Nambu–Jona-Lasinio model as a guide. The derivation treats SU(3) breaking from the current-quark mass on an equal footing with the spontaneous chiral-symmetry breaking. It leads naturally to an additional factor of 2–4 enhancement of ΔI=1/2 K→ππ decay amplitudes.Keywords
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