Weak Decay of Λ in Nuclei : Quarks vs Mesons
نویسندگان
چکیده
Decays of Λ in nuclei, nonmesonic mode, are studied by using the ΛN → NN weak transition potential derived from the meson exchange mechanism and the direct quark mechanism. The decay rates are calculated both for the Λ in symmetric nuclear matter and light hypernuclei. We consider the exchange of six mesons (π,K, η, ρ, ω,K). The form factor in the meson exchange mechanism and short range correlation are carefully studied.
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