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Lepton polarization effects in "Lambda_b -> Lambda l+l-" decay in family non-universal Z' model
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Possible manifestation of the family non-universal Z' boson effects in lepton polarization in rare, exclusive baryonic "Lambda_b -> Lambda l+l-" decay is examined. It is observed that the double lepton polarizations P_TT and P_NN are sensitive to the Z' contribution. Moreover, it is found that the zero position of the polarized forward-backward asymmetry A_FB^LL is shifted to the left compared to the standard model prediction. Therefore, determination of the zero value of A_FB^LL is quite an efficient tool for establishing new Z' boson, but also in discriminating various scenarios of the considered family non-universal Z' model.
Forward citations
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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