منابع مشابه
tRNA Structure Goes from L to λ
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We investigate the rare baryonic exclusive decays of Λb → Λll (l = e, μ, τ) with polarized Λ. Under the approximation of the heavy quark effective theory (HQET), in the standard model we derive the differential decay rates and various polarization asymmetries by including lepton mass effects. We find that with the long-distance effects the decay branching ratios are 5.3× 10 for Λb → Λll (l = e,...
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ژورنال
عنوان ژورنال: Cell
سال: 2003
ISSN: 0092-8674
DOI: 10.1016/s0092-8674(03)00313-1