1996/04/03 by Chao-Qiang Geng, C. Q. Geng, I. J. Hsu +1 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.54.877
published as Phys.Rev. D54 (1996) 877-881 · 13 pages, LaTeX file
arxiv created 1996/04/03 · openalex publication_date 1996/07/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We calculate the long distance contributions to K\ensuremath→\ensuremathπ\ensuremathν\ensuremathν, \ensuremathπ\ensuremathπ\ensuremathν\ensuremathν, and \ensuremathπ\ensuremathπ\ensuremathπ\ensuremathν\ensuremathν modes within the framework of chiral perturbation theory. We find that these contributions to decay rates of K\ensuremath→\ensuremathπ\ensuremathν\ensuremathν and K\ensuremath→\ensuremathπ\ensuremathπ\ensuremathν\ensuremathν in the chiral logarithmic approximation are at least seven orders of magnitude suppressed relative to those from the short distance parts. The long distance effects in this class of decays are, therefore, negligible.