Publication Date
2002
Journal or Book Title
Physics Review D
Abstract
We extend in several respects our earlier work on O(p2) corrections to the matrix elements of the electroweak penguin operator Oewp. First, to facilitate comparison with certain lattice studies we calculate O(p2) corrections to 〈π|Oewp|K〉 in the SU(3) limit of equal light quark masses. Next, we demonstrate how an apparent disagreement in the literature regarding whether higher order chiral contributions increase or decrease 〈(ππ)I=2|Oewp|K〉 is simply a consequence of how the leading order chiral amplitude is defined. Finally, we address an aspect of the ε′/ε problem by estimating O(p2) corrections to recent determinations of 〈(ππ)I=2|Q7,8|K〉 which were carried out in the chiral limit.
Volume
65
Issue
5
Recommended Citation
Cirigliano, Vincenzo and Golowich, Eugene, "Comment on ‘Analysis of O(p2) Corrections to hðð|Q7,8|Ki’" (2002). Physics Review D. 547.
Retrieved from https://scholarworks.umass.edu/physics_faculty_pubs/547
Comments
This is the pre-published version achieved from arXiv. The published version is located at http://prd.aps.org/abstract/PRD/v65/i5/e054014