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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

QCD isospin breaking in meson masses, decay constants and quark mass ratios

Author

  • G. Amoros
  • J. Bijnens
  • P. Talavera

Summary, in English

The procedure to calculate masses and matrix-elements in the presence of mixing of the basis states is explained in detail. We then apply this procedure to the two-loop calculation in Chiral Perturbation Theory of pseudoscalar masses and decay constants including quark mass isospin breaking. These results are used to update our analysis of Kℓ4 done previously and obtain a value of mu/md in addition to values for the low-energy-constants Li
r.

Department/s

  • Theoretical Particle Physics

Publishing year

2001-05-21

Language

English

Pages

87-108

Publication/Series

Nuclear Physics B

Volume

602

Issue

1-2

Document type

Journal article

Publisher

North-Holland

Topic

  • Subatomic Physics

Keywords

  • 11.30.Rd
  • 12.15.Ff
  • 12.39.Fe
  • 13.20.Eb

Status

Published

ISBN/ISSN/Other

  • ISSN: 0550-3213