Decay of Pseudoscalars into Lepton Pairs and Large-NcQCD

1999/08/06 by Marc Knecht, M. Knecht, S. Peris +5 · 3 citations
Physics and Astronomy · #Electron #High-Energy Particle Collisions Research #Lepton #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pseudoscalar #Pseudoscalar meson #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #hep-ph

paper · pdf · doi:10.1103/physrevlett.83.5230

published as Phys.Rev.Lett.83:5230-5233,1999 · 5 pages, 2 figures

arxiv created 1999/08/06 · openalex publication_date 1999/12/20 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The counterterm combination that describes the decay of pseudoscalar mesons into charged lepton pairs at lowest order in chiral perturbation theory is considered within the framework of QCD in the limit of a large number of colors N_c. When further restricted to the lowest meson dominance approximation to large- N_c QCD, our results agree well with the available experimental data.

Citations

• The electroweak π+−π0 mass difference and weak matrix elements in the 1/Nc expansion

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