Search for K s 0 → 2γ decay
Nuovo Cimento Della Societa Italiana Di Fisica A-nuclei Particles and Fields（2008）
摘要
A search for the K s 0 → 2γ decay was carried out using the 180 litre xenon bubble chamber exposed to a separated K+ beam with momentum 0.85 GeV/c at the ITEP proton accelerator. The branching ratio Γ(K s 0 →-> 2γ)/Γ(K s 0 → all) was found to be compatible with zero with a 90% c.l. upper limit 1.33 · 10−4.
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关键词
Electromagnetic decays, π, K and η mesons
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