Higgs portal to dark matter and $$B\rightarrow K^{(*)}$$ decays
Higgs portal to dark matter and $$B\rightarrow K^{(*)}$$ decays
Abstract We consider a Higgs portal model in which the 125-GeV Higgs boson mixes with a light singlet mediator $$h_2$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>h</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math> coupling to particles of a Dark Sector and study potential $$b\rightarrow s h_2$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>b</mml:mi><mml:mo>→</mml:mo><mml:mi>s</mml:mi><mml:msub><mml:mi>h</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math> decays in the Belle II experiment. Multiplying the gauge-dependent off-shell Standard-Model b - …