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- W2571711190 abstract "The rare baryonic decay $Lambda_bto Lambda(to ppi^-)mu^+mu^-$ provides valuable complementary information compared to the corresponding mesonic $bto smu^+mu^-$ transition. In this paper, using the latest high-precision lattice QCD calculation of the $Lambda_btoLambda$ transition form factors, we study this interesting decay within the aligned two-Higgs-doublet model, paying particularly attention to effects of the chirality-flipped operators generated by the charged scalars. In order to extract the full set of angular coefficients in this decay, we consider the following ten angular observables that can be derived from the analysis of the subsequent parity-violating $Lambdato ppi^-$ decay: the differential branching fraction ${rm d}{cal B}/{rm d}q^2$, the longitudinal polarization fraction $F_L$, the lepton-, hadron- and combined lepton-hadron-side forward-backward asymmetries $A_{rm FB}^ell$, $A_{rm FB}^Lambda$ and $A_{rm FB}^{ellLambda}$, as well as the other five asymmetry observables $Y_i$~($i={rm 2,,3s,,3sc,,4s,,4sc}$). Detailed numerical comparisons are made between the SM and NP values for these angular observables. It is found that, under the constraints from the inclusive $Bto X_sgamma$ branching fraction and the latest global fit results of $bto sellell$ data, the contributions of right-handed semileptonic operators $O^{prime}_{9,10}$, besides reconciling the $P_5^{prime}$ anomaly observed in $B^0to K^{ast 0}mu^+mu^-$ decay, could also enhance the values of ${rm d}{cal B}/{rm d}q^2$ and $A_{rm FB}^ell$ in the bin $[15,20]~{rm GeV}^2$, leading to results consistent with the current LHCb measurements." @default.
- W2571711190 created "2017-01-26" @default.
- W2571711190 creator A5011419627 @default.
- W2571711190 creator A5078785146 @default.
- W2571711190 creator A5080675126 @default.
- W2571711190 date "2017-01-15" @default.
- W2571711190 modified "2023-10-15" @default.
- W2571711190 title "The $Lambda_bto Lambda(to ppi^-)mu^+mu^-$ decay in the aligned two-Higgs-doublet model" @default.
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- W2571711190 doi "https://doi.org/10.48550/arxiv.1701.04029" @default.
- W2571711190 hasPublicationYear "2017" @default.
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