Title
CHIRAL SYMMETRY AND THE PENGUIN INTERACTION
Publication Date
1984
Journal or Book Title
PHYSICAL REVIEW D
Abstract
It is shown how the "penguin" interaction, proposed by Shifman, Vainshtein, and Zakharov in the theory of nonleptonic weak decays, is consistent with the constraints of chiral symmetry. For the K-π transition this involves including a diagram which was missed in previous work. The formulas for the K→2π matrix elements are found to be a factor of 2 larger than the original estimates using the vacuum-saturation method. In addition the equivalence of a procedure using a normal-ordered operator and the more standard technique is demonstrated.
Pages
1499-1504
Volume
30
Issue
7
Recommended Citation
Donoghue, JF, "CHIRAL SYMMETRY AND THE PENGUIN INTERACTION" (1984). PHYSICAL REVIEW D. 204.
Retrieved from https://scholarworks.umass.edu/physics_faculty_pubs/204
Comments
Published version is located at http://prd.aps.org/abstract/PRD/v30/i7/p1499_1