The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Johan Bijnens in front of his whiteboard

Johan Bijnens

Professor, Deputy Head of Division

Johan Bijnens in front of his whiteboard

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 - Has been reorganised

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