Leptoquark option for B-meson anomalies and leptonic signatures

We entertain the option of scalar leptoquarks to explain the anomalies in the semileptonic decays of B mesons and the discrepancies in the lepton (g -2)(l)'s including the recent results at Fermilab E989. The Re(K(*) )and R-D(*) anomalies can be accommodated by the specific couplings for triplet and singlet leptoquarks, respectively, subject to the bounds from B -> K nu(nu) over bar. We discuss the correlation between the leptonic signatures from leptoquarks such as mu -> e gamma and the electric dipole moment of the electron and show that desirable neutrino masses can be generated dominantly by top-quark loops in the extension of the model with several doublet leptoquarks.

Automated summary

This study explores the option of using scalar leptoquarks to explain anomalies in the semileptonic decays of B mesons and discrepancies in lepton (g-2)(l) values. The specific couplings of triplet and singlet leptoquarks are discussed in relation to Re(K) and R-D(*) anomalies, subject to constraints from B -> K nu(nu) over bar decays. Additionally, the correlation between leptoquark-induced leptonic signatures and desirable neutrino masses, primarily generated by top-quark loops in the extension of the model with multiple doublet leptoquarks, is examined.