Double-Lepton Polarization Asymmetries and Branching Ratio of the $B\rar γl^+ l^- $ transition in Universal Extra Dimension

Abstract

We study the radiative dileptonic $B \rar γl^+ l^- $ transition in the presence of a universal extra dimension in the Applequist-Cheng-Dobrescu model. In particular, using the corresponding form factors calculated via light cone QCD sum rules, we analyze the branching ratio and double lepton polarization asymmetries related to this channel and compare the results with the predictions of the standard model. We show how the results deviate from predictions of the standard model at lower values of the compactification factor ($1/R$) of extra dimension.

20 Pages and 8 Figures

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Cited by in corpus (2)

• Constraint on compactification scale via recently observed baryonic ${\Lambda }_b\to \Lambda {\ell }^{+}{\ell }^{-}$ channel and analysis of the ${\Sigma }_b\to \Sigma {\ell }^{+}{\ell }^{-}$ transition in SM and UED scenario
• Analysis of the radiative ${\Lambda }_b\to \Lambda \gamma$ transition in SM and scenarios with one or two universal extra dimensions