Comparing 2HDM + scalar and pseudoscalar simplified models at LHC
Giorgio Arcadi, Giorgio Busoni, Thomas Hugle, Valentin Tenorth
Abstract
A bstract In this work we compare the current experimental LHC limits of the 2HDM + scalar and pseudoscalar for the $$ t\overline{t} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>t</mml:mi> <mml:mover> <mml:mi>t</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> , mono- Z and mono- h signatures and forecast the reach of future LHC upgrades for the mono- Z channel. Furthermore, we comment on the possibility, in case of a signal detection, to discriminate between the two models. The 2HDM+S and 2HDM+PS are two notable examples of the so-called next generation of Dark Matter Simplified Models. They allow for a renormalizable coupling of fermionic, Standard Model singlet, Dark Matter with a two Higgs doublet sector, through the mixing of the latter with a scalar or pseudoscalar singlet.