Speaker
Description
The long-standing deviations observed in the ratios R(D) and R(D), which probe lepton flavor universality in semileptonic B meson decays, have motivated extensive studies of new physics scenarios. In this work, we explore an explanation based on a singlet–triplet vector leptoquark model, featuring both $U_1$ and $U_3$ states. We perform a comprehensive fit to the most recent experimental data on R(D) and R(D), including constraints from other flavor observables. Our analysis identifies regions of parameter space where the model provides a simultaneous description of the anomalies while remaining consistent with current bounds. We further discuss the complementarity of low-energy flavor measurements and direct searches at the LHC in probing this framework.
