Higgs portal to dark matter and $B\to K^{(*)}$ decays

23 Mar 2020 Kachanovich Aliaksei Nierste Ulrich Nišandžić Ivan

We consider a Higgs portal model in which the 125-GeV Higgs boson mixes with a light singlet mediator $h_2$ coupling to particles of a Dark Sector and study potential $b\to s h_2$ decays in the Belle II experiment. Multiplying the gauge-dependent off-shell Standard-Model $b$-$s$-Higgs vertex with the sine of the Higgs mixing angle does not give the correct $b$-$s$-$h_2$ vertex... (read more)

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  • HIGH ENERGY PHYSICS - PHENOMENOLOGY