Speaker
Description
The triplet vector boson (TVB) is a simplified new physics model involving massive vector bosons transforming as a weak triplet vector, which it has been proposed as a combined explanation for the anomalous b→sμ+μ− and b→cτν¯τ 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¯τ 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 of the ratio R(Λc)=BR(Λb→Λcτν¯τ)/BR(Λb→Λcμν¯μ) very recently obtained by LHCb. In particular, we show that the TVB model can provide an explanation for the B meson anomalies; however, this framework is in strong tension with LHC bounds. With respect to future flavor measurements at Belle II, our results suggest that a small new physics window would be allowed to explain the b→cτν¯τ data in agreement with LHC constraints solely. Furthermore, the implications of our phenomenological analysis of the TVB model to some known flavor parametrizations are also discussed.
