We show that supplementing the Standard Model by only a second Higgs doublet, a combined explanation of h→eτ, h→μτ, b→sℓ+ℓ−, the W mass and R(D(∗)) as well as the excess in t→bH+(130GeV)→bbc is possible. While this requires flavour violating couplings, the stringent bounds from e.g. μ→eγ, τ→μγ, Bs−Bˉs mixing, b→sγ, low mass di-jet and pp→H+H−→τ+τ−ννˉ searches can be avoided. However, the model is very constrained, it inevitably predicts a shift in the SM Higgs coupling strength to tau leptons as well as a non-zero t→hc rate, as indeed preferred by recent measurements. We study three benchmark points providing such a simultaneous explanation and calculate their predictions, including collider signatures which can be tested with upcoming LHC run-3 data.
@article{arxiv.2311.03430,
title = {Accumulating Hints for Flavour Violating Higgses at the Electroweak Scale},
author = {Andreas Crivellin and Syuhei Iguro},
journal= {arXiv preprint arXiv:2311.03430},
year = {2024}
}