Rare decays of Λ b →Λ γ and Λ b →Λ l + l − in universal extra-dimension model
نویسندگان
چکیده
منابع مشابه
Rare Λ b → Λ l + l − Decays with Polarized Λ
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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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: The European Physical Journal C
سال: 2008
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s10052-008-0835-8