Weak K-amplitudes in the chiral and

1995/11/30 by A. Pich, Antonio Pich, Eduardo de Rafael +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/0370-2693(96)00171-2

published as Phys.Lett. B374 (1996) 186-192 · 11 pages, latex, 1 figure (included in a separate ps file)

arxiv created 1995/11/30 · openalex publication_date 1996/05/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

It is shown that there exist symmetry constraints for non--leptonic weak amplitudes which emerge when the 1/N_c--expansion restricted to the leading and next--to--leading approximations only is systematically combined with χPT limited to the lowest non--trivial order. We discuss these constraints for the couplings \bf g₈ and \bf g₂₇ of ΔS=1 transitions and the \bf B_K--parameter of K⁰- K⁰ mixing.

Citations

• Light quark masses in QCD
• QCD corrections to inclusive ΔS = 1, 2 transitions at the next-to-leading order
• Chiral perturbation theory
• Chiral perturbation theory: Expansions in the mass of the strange quark
• A planar diagram theory for strong interactions