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Double-lepton polarization asymmetries in Lambda_b -> Lambda l^+ l^- decay
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Double-lepton polarization asymmetries in Lambda_b -> Lambda l^+ l^- decay
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Double-lepton polarization asymmetries in (Lambda_b -> Lambda l^+ l^-) decay are calculated using a general, model independent form of the effective Hamiltonian. The sensitivities of these asymmetries to the new Wilson coefficients are studied in detail. Furthermore, the correlations between averaged double-lepton polarization asymmetry and branching ratio are analyzed. It is shown that there exist certain regions of the new Wilson coefficients where new physics can be established by measuring the double-lepton polarization asymmetries only.
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Cited by 1 Pith paper
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Lepton polarization dependent angular observables and the polarization asymmetries in the four-fold $\Lambda_b \rightarrow \Lambda(\rightarrow N \pi) \ell^+\ell^-$ decay
The authors derive the lepton-polarized four-fold angular distributions for Λ_b→Λ(→Nπ)ℓ⁺ℓ⁻, identify new angular coefficients for normal and transverse polarizations, and provide SM and NP predictions for the polariza...
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