B → K∗ ℓ + ℓ − decays at large recoil in the Standard Model: a theoretical reappraisal
نویسندگان
چکیده
منابع مشابه
Analysis of B → K ∗ l + l − decays at large recoil
We study the exclusive decays of B → Kll within the framework of the perturbative QCD (PQCD). We obtain the form factors for the B → K transition in the large recoil region, where the PQCD for heavy B meson decays is reliable. We find that our results for the form factors at q = 0 are consistent with those from most of the other QCDmodels in the literature. Via the decay chain of B → K(Kπ)ll, w...
متن کاملAnalysis of B → K ∗ l + l − decays at large recoil region
We study the exclusive decays of B → Kll within the framework of the perturbative QCD (PQCD). We obtain the form factors for the B → K transition in the large recoil region, where the PQCD for heavy B meson decays is reliable. We find that our results for the form factors at q = 0 are consistent with those from most of the other QCDmodels in the literature. Via the decay chain of B → K(Kπ)ll, w...
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Using improved theoretical calculations of the decay form factors in the Light Cone-QCD sum rule approach, we investigate the decay rates, dilepton invariant mass spectra and the forward-backward (FB) asymmetry in the decays B → (K, K *)ℓ + ℓ − (ℓ ± = e ± , µ ± , τ ±) in the standard model (SM) and a number of popular variants of the supersymmetric (SUSY) models. Theoretical precision on the di...
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We perform an analysis of the K∗ polarization states in the exclusive B meson decay B0 → K∗0(→ K−π+)l+l− (l = e, μ, τ) in the low dilepton mass region, where the final vector meson has a large energy. Working in the transversity basis, we study various observables that involve the K∗ spin amplitudes A⊥, A‖, A0 by exploiting the heavyto-light form factor relations in the heavy quark and large-EK...
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We study the exclusive decays of B → Kll within the framework of the PQCD. We obtain the form factors for the B → K transitions in all allowed values of q, which agree with the lattice results. We find that our distributions of the decay rates and leptonic asymmetries are consistent with that given in the other QCD models in the literature.
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2016
ISSN: 1029-8479
DOI: 10.1007/jhep06(2016)116