Weak Transition in Double-Λ Hypernuclei
نویسنده
چکیده
We calculate the ΛΛ → Y N transition rate of 6 ΛΛHe by the hybrid picture, the π and K exchanges plus the direct quark processes. It is found that the hyperon-induced decay is weaker than the nucleon-induced decay, but the former may reveal the short-range mechanism of the weak transition and also give a clear signal of the strong ∆I = 3/2 transition. The ΛΛ → YN transition in double-Λ hypernucleus is complement to the ΛN → NN transition as it occurs only in the J = 0 channel, while the J = 1 transition is dominant in the ΛN → NN case.
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تاریخ انتشار 2003