Measurement of the branching ratio of the decay $K_{L}^{0}$ →μμ

Publisher Website

4 November 1991

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

Vol. 67 (19) , 2618-2621
https://doi.org/10.1103/physrevlett.67.2618

Abstract

We observed 117.8

K_{L}^{0}

→μμ events after background subtraction of 1.2 events in an experiment to search for the deays

K_{L}^{0}

→μe and ee at the KEK 12-GeV Proton Synchrotron. Normalizing to the decay

K_{L}^{0}

→

π^{+}

π^{-}

, the branching ratio B(

K_{L}^{0}

→μμ)=[7.9±0.6(stat)±0.3 (syste)]×

10^{- 9}

was obtained.

Keywords

This publication has 25 references indexed in Scilit:

Constraints ont-quark mass and quark mixings fromKL→μμ¯, and relations to other rare decays
Physical Review D, 1990
Effects of Superheavy Quarks and Leptons in Low-Energy Weak Processes KL-> Formula, K+-> + Formula and K0 Formula0
Progress of Theoretical Physics, 1981
Bounds on quark mixing angles from the decay KL → μμ
Physics Letters B, 1979
Comment on calculations of theKL→μμ¯decay rate in gauge theories
Physical Review D, 1976
Rare decay modes of the $K$ mesons in gauge theories
Physical Review D, 1974
CP-Violation in the Renormalizable Theory of Weak Interaction
Progress of Theoretical Physics, 1973
Electromagnetic Contribution to the DecaysKS→l landKL→l l
Physical Review D, 1971
Weak Interactions with Lepton-Hadron Symmetry
Physical Review D, 1970
Neutral Kaon Decays into Lepton Pairs
Physical Review D, 1970
Electromagnetic Contribution to the Decays $K_{S} \to l \bar{l}$ and $K_{L} \to l \bar{l}$
Physical Review B, 1969