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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

Isospin breaking in K -> 3 pi decays III: Bremsstrahlung and fit to experiment

Author

  • Johan Bijnens
  • Fredrik Borg

Summary, in English

We complete here our work on isospin violation in the K -> 3 pi system. We first calculate K -> 2 pi to the same order as we did K -> 3 pi in papers I and II of this series. This adds the effects of order G(27)p(2)(m(u) - m(d)) and G(27)p(2)e(2) to earlier work. We calculate also the lowest order bremsstrahlung contributions, K -> 2 pi gamma, 3 pi gamma. With these and our earlier results we perform a full fit to all available CP-conserving data in the K -> 2 pi, 3 pi system including isospin violation effects. We perform these fits under various input assumptions as well as test the factorization and the vector dominance model for the weak NLO low energy constants.

Department/s

  • Theoretical Particle Physics

Publishing year

2005

Language

English

Pages

383-394

Publication/Series

European Physical Journal C. Particles and Fields

Volume

40

Issue

3

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1434-6044