Lepton polarization asymmetry and forward backward asymmetry in exclusive B->K_1 tau^(+)tau^(-) decay in universal extra dimension scenario

Abstract

Decay rate, forward-backward asymmetry and polarization asymmetries of final state leptons in B-> K_{1}tau ^{+}tau ^{-}, where K_{1} is the axial vector meson, are calculated in Standard Model and in the universal extra dimension (UED) model. The sensitivity of the observables on the compactification radius $R$, the only unknown paramter in UED model, is studied. Finally, the helicity fractions of the final state K_{1} are calculated and their dependence on the compactification radius is discussed. This analysis of helicity fraction is briefly extended to B->K^{*}l ^{+}l ^{-}(l =e,mu) and compared with the other approaches exist in the literature

19 pages, 6 figures

References in corpus (3)

• Bound on minimal universal extra dimensions from Bbar -> X_s gamma
• Spin effects in rare $B\to X_s{\tau }^{+}{\tau }^{-}$ and $B\to K^{(\ast )}{\tau }^{+}{\tau }^{-}$ decays in a single Universal Extra Dimension scenario
• Study of FCNC mediated rare B_s decays in a single universal extra dimension scenario

Cited by in corpus (4)

• K1(1270)-K1(1400) Mixing Angle and New-Physics Effects in B to K1 l+ l- Decays
• Exclusive semileptonic decays of ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ in supersymmetric theories
• Lepton polarization in $B\to K_1{\ell }^{+}{\ell }^{-}$ Decays
• Branching Ratios, Forward-backward Asymmetry and Angular Distributions of $B\to K_1{l}^{+}{l}^{-}$ Decays