Exclusive B → Mℓ + ℓ − (M = π, K, ρ, K ∗ ) Decays and Determinations of |Vts | and/or |Vtd/Vts|
نویسنده
چکیده
We examine the possibility for precise determination of |Vtd| and/or |Vtd/Vts| from the ratios of exclusive decays, (B → ρl+l−)/(B → K∗l+l−) and (B → πl+l−)/(B → Kl+l−). We show that the ratio |Vtd/Vts| can be extracted experimentally with a small theoretical uncertainty from SU(3) breaking effects and hadronic form–factors, if we appropriately constrain kinematical regions of q2. We also give detailed analytical and numerical results on the differential decay width dΓ(B → K∗l+l−)/dq2, and the ratio [ dB(B → ρl+l−)/dq2 ]
منابع مشابه
Exclusive B → Mℓ + ℓ − (M = π, K, ρ, K ∗ ) Decays and Determinations of |Vts | (and |Vtd/Vts|)
We examine the possibility for precise determination of |Vts| (and |Vtd/Vts|) from the exclusive decays, B → Kl+l−, B → K∗l+l− (and B → πl+l−, B → ρl+l−). We show that the ratio |Vts| can be extracted experimentally with a small theoretical uncertainty from hadronic form–factors, if we appropriately constrain kinematical regions of q2. We also give detailed analytical and numerical results on t...
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