2021/11/30 by Peter Athron, Csaba Balazs, Tomás E. Gonzalo +3 · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1007/jhep01(2022)037
published as J. High Energ. Phys. 2022, 37 (2022) · 49 pages, 18 figures, new references, fixed typos
arxiv created 2022/01/15 · arxiv updated 2022/01/19
We present a likelihood analysis of the general two Higgs doublet model, using the most important currently measured flavour observables, in view of the anomalies in charged current tree-level and neutral current one-loop rare decays of B mesons in b→ c l ν and b→ sμ+μ- transitions, respectively. We corroborate that the model explains the latter and it is able to simultaneously fit the experimental values of the R(D) ratio at 1σ, but it can not accommodate the R(D*) and FL(D*) observables. We find that the fitted values for the angular observables in b→ sμ+μ- transitions exhibit better agreement with the general two Higgs double model in comparison to the SM. We also make predictions for future collider observables BR(t→ ch), BR(h→ bs), BR(h→ τμ), BR(Bs→τ+τ-), BR(B+→ K+τ+τ-) and the flavour violating decays of the τ lepton, BR(τ→3μ) and BR(τ→μγ). The model predicts values of BR(t→ ch), BR(Bs→τ+τ-) and BR(B+→ K+τ+τ-) that are out of reach of future experiments, but its predictions for BR(h→ bs) and BR(h→ τμ) are within the future sensitivity of the HL-LHC or the ILC. We also find that the predictions for the τ→3μ and τ→μγ decays are well within the projected limits of the Belle II experiment. Finally, using the latest measurement of the Fermilab Muon g-2 Collaboration, we performed a simultaneous fit to Δaμ constrained by the charged anomalies, finding solutions at the 1σ level. Once the neutral anomalies are included, however, a simultaneous explanation is unfeasible.