Lepton polarization asymmetries for $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$: A Model Independent approach

Abstract

In this work we shall derive expressions for the single and double lepton polarization asymmetries for the exclusive decay $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$, using the most general model independent effective Hamiltonian. We have conducted this study with this particular channel as it has the highest branching ratio among the various purely leptonic and semi-leptonic decay modes, making this mode particularly useful for studying physics beyond the SM. We have also analyzed the effects on these polarization asymmetries, and hence the physics underlying it, when complex phases are included in some of the Wilson coefficients.

version accepted in JHEP, formating changed to JHEP style, LaTeX file 23 pages including 15 eps figures

References in corpus (1)

• Double-lepton polarization asymmetries in Lambda_b -> Lambda l^+ l^- decay

Cited by in corpus (10)

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• Polarization effects in exclusive semileptonic (Lambda_b -> Lambda l^+ l^-) decay
• $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ Forward-backward Asymmetry and New Physics
• Lepton polarization in $B\to K_1{\ell }^{+}{\ell }^{-}$ Decays
• Double-lepton polarization asymmetries in the Exclusive (B -> rho l^+ l^-) decay beyond the Standard Model
• Study of Bs-> ϕl^+ l^-$ Decay in a Single Universal Extra Dimension
• Analysis of B_s->ϕ\ell^+ \ell^- decay with new physics effects
• CP violation in the $B\to K{\ell }^{+}{\ell }^{-}$ decay
• Rare Bc->Ds l^+ l^- decay beyond the standard model