Electroweak matrix elements at large Nc: matching quarks to mesons

Abstract

I review some progress made on the problem of calculating electroweak processes of mesons at low energy with the use of an approximation to large-Nc QCD which we call the Minimal Hadronic Approximation. An update of results for the matrix elements of the electroweak penguin operators Q7 and Q8 is also given.

12 pages, 2 figures. Invited talk given at ``The Phenomenology of Large-Nc QCD'', Arizona State U., January 9-11, 2002. A comment and a reference added

References in corpus (2)

• Hadronic light-by-light corrections to the muon g-2: the pion-pole contribution
• Calculation of epsilon'/epsilon

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• On the relation between low-energy constants and resonance saturation
• Vacuum alignment and lattice artifacts: Wilson fermions
• Large N_c in Chiral Resonance Lagrangians
• The Muon g-2 Revisited
• Kaon weak interactions in powers of 1/Nc