Scalar leptoquarks and the rare B meson decays

Abstract

We study some rare decays of $B$ meson involving the quark level transition $b\to q{l}^{+}{l}^{-}(q=d,s)$ in the scalar leptoquark model. We constrain the leptoquark parameter space using the recently measured branching ratios of $B_{s,d}\to {\mu }^{+}{\mu }^{-}$ processes. Using such parameters, we obtain the branching ratios, direct CP violation parameters and isospin asymmetries in $B\to K{\mu }^{+}{\mu }^{-}$ and $B\to \pi {\mu }^{+}{\mu }^{-}$ processes. We also obtain the branching ratios for some lepton flavour violating decays $B\to l_i^{+}{l}_j^{-}$. We find that the various anomalies associated with the isospin asymmetries of $B\to K{\mu }^{+}{\mu }^{-}$ process can be explained in the scalar leptoquark model.

28 pages, 7 figures. typos corrected, to appear in Phys. Rev. D

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Cited by in corpus (14)

• B-decay Anomalies in a Composite Leptoquark Model
• Leptoquark Flavor Patterns & B Decay Anomalies
• Explaining the $R_K$ and $R_{D^{(\ast )}}$ anomalies with vector leptoquarks
• Implications of $b\to s$ measurements
• Neutrino mixing and $R_K$ anomaly in $U(1{)}_X$ models: a bottom-up approach
• Explanation of $B\to K^{(\ast )}{\ell }^{+}{\ell }^{-}$ and muon $g-2$, and implications at the LHC
• Time dependence in $B\to V\ell \ell$ decays
• Rare semileptonic $B\to K(\pi )l_i^{-}{l}_j^{+}$ decay in vector leptoquark model
• Effects of scalar leptoquark on semileptonic ${\Lambda }_b$ decays
• A testable radiative neutrino mass model without additional symmetries and Explanation for the $b\to s{\ell }^{+}{\ell }^{-}$ anomaly
• A Three-loop Neutrino Mass Model with a Colored Triplet Scalar
• Study of the rare decays $B_{s,d}^{\ast }\to {\mu }^{+}{\mu }^{-}$
• Implications of a Electroweak Triplet Scalar Leptoquark on the Ultra-High Energy Neutrino Events at IceCube
• Impact of lepton flavour universality violation on CP violation sensitivity of long baseline neutrino oscillation experiments