$K_{L e5}$ decay as a background in search for $K_{L} \to Ï^{0} Î¼^{\pm} e^{\mp}$

Pyungwon Ko; Kang Young Lee; Jae Kwan Kim

doi:10.1103/PhysRevD.51.3455

paper

$K_{L e 5}$ decay as a background in search for $K_{L} \to I ¨ ^{0} I^¼^{\pm} e^{\mp}$

arXiv:hep-ph/9502320 · doi:10.1103/PhysRevD.51.3455

Abstract

We consider a process $K_{L e 5} (K_{L} \to I ¨ ^{0} I ¨ ^{0} I ¨ ^{\pm} e^{\mp} I^½)$ as a standard model background to the experiment $K_{L} \to I ¨ ^{0} I^¼^{\pm} e^{\mp}$ , which seeks for possible violation of lepton family number. Using the lowest order chiral lagrangian, we find that the branching ratio for $K_{L} \to I ¨ ^{0} I ¨ ^{0} I ¨ ^{\pm} e^{\mp} I^½$ to be $6.2 \times 1 0^{- 12}$ . A similar decay $K_{L} \to I ¨ ^{\mp} I ¨ ^{\mp} I ¨ ^{\pm} e^{\pm} I^½$ has a branching ratio, $1.7 \times 1 0^{- 11}$ .

RevTeX, 10 pages, 1 figure available upon request, to appear in Phys. Rev. D

KLe5​ decay as a background in search for KL​→I¨0I^¼±e∓

Abstract

$K_{L e 5}$ decay as a background in search for $K_{L} \to I ¨ ^{0} I^¼^{\pm} e^{\mp}$