ε′K/εK in the chiral limit
Research output: Contribution to journal › Article
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′K/εK 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.
|Research areas and keywords||
Subject classification (UKÄ) – MANDATORY
|Number of pages||29|
|Journal||Journal of High Energy Physics|
|Publication status||Published - 2000 Jul|