Your browser has javascript turned off or blocked. This will lead to some parts of our website to not work properly or at all. Turn on javascript for best performance.

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.

Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

ε′KK in the chiral limit

Author

  • Johan Bijnens
  • Joaquim Prades

Summary, in English

The K → ππ system is analyzed in the chiral limit within the Standard Model. We discuss how to connect the short-distance running in the |ΔS| = 1 case to the matrix-elements calculated in a low-energy approximation in a scheme-independent fashion. We calculate this correction and the resulting Wilson Coefficients. The matrix elements are calculated to next-to-leading order in the 1/Nc expansion and combined with the Wilson coefficients to calculate the two isospin amplitudes and ε′K. The ΔI = 1/2 rule is reproduced within expected errors and we obtain a substantially larger value for ε′KK than most other analysises. We discuss the reasons for this difference. We also suggest that the X-boson method is an option for lattice QCD calculations.

Department/s

  • Theoretical Particle Physics

Publishing year

2000-07

Language

English

Publication/Series

Journal of High Energy Physics

Volume

2000

Issue

JHEP06(2000)

Document type

Journal article

Publisher

Springer

Topic

  • Other Physics Topics

Keywords

  • 1/N Expansion
  • CP-violation
  • Kaon Physics
  • Weak Decays

Status

Published

ISBN/ISSN/Other

  • ISSN: 1029-8479