Two Higgs doublet model with vectorlike leptons and contributions to $pp\to WW$ and $H\to WW$

Understand

We study a two Higgs doublet model extended by vectorlike leptons mixing with one family of standard model leptons.

• Generated flavor violating couplings between heavy and light leptons can dramatically alter the decay patterns of heavier Higgs bosons.
• We focus on $pp \to H \to \nu_4 \nu_\mu \to W \mu \nu_\mu$, where $\nu_4$ is a new neutral lepton, and study possible effects of this process on the measurements of $pp \to WW$ and $H \to WW$ since it leads to the same final states.
• We discuss predictions for contributions to $pp \to WW$ and $H \to WW$ and their correlations from the region of the parameter space that satisfies all available constraints including precision electroweak observables and from pair production of vectorlike leptons.