The MCPM, a two-Higgs-doublet model with maximal CP symmetry, and LHC13

Abstract

We continue our investigation of the phenomenological consequences of the MCPM for the LHC experiments. As in any two-Higgs-doublet model we have in the MCPM three neutral Higgs bosons and one charged Higgs-boson pair $H^{\pm }$. Here we discuss the two-photon production in proton-proton collisions. We find that in the MCPM a resonance-type structure in the $\gamma \gamma$ invariant mass distribution is predicted around twice the $H^{\pm }$ mass $m_{H^{\pm }}$ with a width $2{\Gamma }_H$ where ${\Gamma }_H$ is the $H^{\pm }$ width. If we set $m_{H^{\pm }}=375$ GeV, the above resonance structure appears at 750 GeV with a width of about 45 GeV. We point out various predictions of the MCPM which follow in such a scenario and which can be checked at the LHC.

Comments: 10 pages, 7 figures