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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

The ΔI = 1/2 rule in the chiral limit

Author

  • Johan Bijnens
  • Joaquim Prades

Summary, in English

We discuss the matching between long-distance and short-distance at next-to-leading in 1/Nc and show how the scheme-dependence from the two-loop renormalization group running can be treated. We then use this method to study the three O(p2) terms contributing to non-leptonic kaon decays, namely the usual octet and 27-plet derivative terms as well as the weak mass term using the Extended Nambu Jona-Lasinio model as the low energy approximation. We also discuss subtleties in the momentum routing in the low energy theory and a problem in separating factorizable and non-factorizable contributions from the Q6 operator in the chiral limit. We update our earlier results on the BK parameter as well.

Department/s

  • Theoretical Particle Physics

Publishing year

1999-12-01

Language

English

Publication/Series

Journal of High Energy Physics

Volume

1999

Issue

JHEP01(1999)

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Keywords

  • 1/N Expansion
  • Chiral Lagrangians
  • Kaon Physics
  • Weak Decays

Status

Published

ISBN/ISSN/Other

  • ISSN: 1029-8479