Study of long distance contributions toK→nπνν¯

1 July 1996

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 54 (1) , 877-881
https://doi.org/10.1103/physrevd.54.877

Abstract

We calculate the long distance contributions to

K \to π ν \bar{ν}, π π ν \bar{ν}, and π π π ν \bar{ν}

modes within the framework of chiral perturbation theory. We find that these contributions to decay rates of

K \to π ν \bar{ν}

and

K \to π π ν \bar{ν}

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.

Keywords

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