The authors evaluate form factors via HQET and z-expansion for B_s to D_s** l nu decays, predict SM LFU ratios R_Ds0*=0.158(20) etc., and analyze NP effects in WET/SMEFT/2HDM showing scalar/tensor operators produce >2 sigma deviations in some observables.
Conclusive probe of the charged Higgs solution of P5’ and RD(*) discrepancies
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Rare Λ_b, Σ_b and Ξ_b dileptonic decays are analyzed in Type-III 2HDM; branching ratios and lepton asymmetries may deviate from the SM and be probeable at LHCb/Belle II.
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A Comprehensive Analysis of $B_s \to D_s^{**}\ell\nu_\ell$ Decays Within and Beyond the Standard Model
The authors evaluate form factors via HQET and z-expansion for B_s to D_s** l nu decays, predict SM LFU ratios R_Ds0*=0.158(20) etc., and analyze NP effects in WET/SMEFT/2HDM showing scalar/tensor operators produce >2 sigma deviations in some observables.
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Comprehensive analyses of rare $ \Lambda_b \rightarrow \Lambda \ell^+ \ell^-$, $\Sigma_b \rightarrow \Sigma \ell^+ \ell^-$ and $\Xi_b \rightarrow \Xi \ell^+ \ell^-$ decays in the 2HDM
Rare Λ_b, Σ_b and Ξ_b dileptonic decays are analyzed in Type-III 2HDM; branching ratios and lepton asymmetries may deviate from the SM and be probeable at LHCb/Belle II.