CP-Conserving Contribution in the Decays K_L⇾π゜γγ and K_L⇾ π゜e^+e^- : Particles and Fields

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概要

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• The CP-conserving contribution to the decay K_L⇾π゜e^+e^- is reexamined. The general form of the decay rates for K_L⇾ π゜γγ and K_L⇾π゜γγ⇾π゜e^+e^- (the absorptive part) is obtained. Using the vector meson dominance (VMD) model, the branching ratios for K_L⇾π゜γγ and K_L⇾π゜γγ⇾π゜e^+e^- (the absorptive part) are shown to be Br[K_L⇾π゜e^+e^-]∣_<2γ>≥1.7×10^<-11>, Br[K_L⇾π゜γγ]=1.4×10^<-6>. Our result suggests that the CP-conserving contribution with VMD model may be larger than the CP-violating one in the standard model.

• 理論物理学刊行会の論文
• 1989-08-25

著者

• MOROZUMI Takuya

  Deptartment of Physics, Hiroshima University

• Morozumi Takuya

  National Laboratory For High Energy Physics

• IWASAKI Hirotomo

  Department of Physics, Hiroshima University

• Iwasaki Hirotomo

  Department Of Physics Hiroshima University

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