The B-anomalies in the context of the Triplet Vector Boson model (Dr. José Herman Muñoz, Univ. del Tolima, Colombia)

Monday 27 Jun 2022, 11:00 → 13:00 America/Mexico_City

The triplet vector boson (TVB) is a simplifed new physics model involving massive vector bosons transforming as a weak triplet vector, which it has been proposed as a combined explanation to the anomalous  b →sμ^+ μ^-   and  b →cτν  data (the so-called B meson anomalies). In this work, we carry out an updated view of the TVB model, including the Belle II perspectives. We perform a global fit to explore the allowed parameter space by the most current b →sμ^+ μ^-  and b →cτν  data, by considering all relevant low-energy flavor observables. Our results are confronted with the most recent LHC constraints. We also incorporate in our study the first measurement on the ratio R(Λ_c) very recently obtained by LHCb. In particular, we show that the TVB model can provide an explanation to the B meson anomalies; however, this framework is in strong tension with LHC bounds. In respect to future flavor measurements at Belle II, our results suggest that a small new physics window would be allow to solely explain the b →cτν  data in agreement with LHC constraints.