Accumulating hints for flavor-violating Higgs bosons at the electroweak scale

Author:

Crivellin Andreas12ORCID,Iguro Syuhei345ORCID

Affiliation:

1. Universität Zürich

2. Paul Scherrer Institut

3. Karlsruhe Institute of Technology (KIT)

4. Institute for Astroparticle Physics (IAP)

5. Nagoya University

Abstract

We show that supplementing the Standard Model by only a second Higgs doublet, a combined explanation of heτ, hμτ, bs+, the W mass and R(D(*)) as well as the excess in tbH+(130GeV)bb¯c is possible. While this requires flavor violating couplings, the stringent bounds from, e.g., μeγ, τμγ, BsB¯s mixing, bsγ, low mass dijet, and ppH+Hτ+τνν¯ 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 nonzero thc 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. Published by the American Physical Society 2024

Funder

Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Deutsche Forschungsgemeinschaft

Publisher

American Physical Society (APS)

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