ε′KK in the chiral limit

Research output: Contribution to journalArticle

Abstract

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.

Details

Authors
Organisations
External organisations
  • University of Granada
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Other Physics Topics

Keywords

  • 1/N Expansion, CP-violation, Kaon Physics, Weak Decays
Original languageEnglish
Article number035
Number of pages29
JournalJournal of High Energy Physics
Volume2000
Issue numberJHEP06(2000)
Publication statusPublished - 2000 Jul
Publication categoryResearch
Peer-reviewedYes