Probing the general 2HDM with flavor violation through A → ZH

Wei-Shu Hou¹, Mohamed Krab^1*

¹Department of Physics, National Taiwan University, Taipei, Taiwan

* Presenter:Mohamed Krab, email:med.krab@gmail.com

We investigate the LHC discovery prospects for a second Higgs doublet through A → ZH weak decay. The latter is identified as the smoking gun signature of two Higgs doublet models (2HDMs) with first-order electroweak phase transition, a necessary condition for electroweak baryogenesis. In the general 2HDM (G2HDM) that has flavor-changing neutral Higgs couplings, H may decay dominantly via tc final state, giving rise to trilepton signals. Through a phenomenological analysis, we show that A → ZH in ℓ⁺ℓ⁻tc⁢ final state could be a promising probe of G2HDM at the LHC with flavor violation.

Keywords: Beyond Standard Model, Large Hadron Collider, Flavor-Changing Neutral Currents, Higgs Physics