2017/11/26 by Duarte Fontes, Margarete Mühlleitner, Jorge C. Romão +3 · 2 citations
Computer Science · Physics and Astronomy · #Benchmark (surveying) #Computational Physics and Python Applications #Fermion #Large Hadron Collider #Neutrino Physics Research #Parameter space #Particle physics theoretical and experimental studies #Physics beyond the Standard Model #Quantum chromodynamics #Scalar (mathematics) #Standard Model (mathematical formulation) #hep-ph
paper · pdf · doi:10.1007/jhep02(2018)073
40 pages, 19 figures
arxiv created 2017/11/26 · openalex created_date 2017/12/04 · openalex publication_date 2018/02/01 · arxiv updated 2018/04/04 · openalex updated_date 2026/08/05
The complex two-Higgs doublet model is one of the simplest ways to extend the scalar sector of the Standard Model to include a new source of CP-violation. The model has been used as a benchmark model to search for CP-violation at the LHC and as a possible explanation for the matter-antimatter asymmetry of the Universe. In this work, we re-analyse in full detail the softly broken ℤ2 symmetric complex two-Higgs doublet model (C2HDM). We provide the code C2HDMHDECAY implementing the C2HDM in the well-known HDECAY program which calculates the decay widths including the state-of-the-art higher order QCD corrections and the relevant off-shell decays. Using C2HDMHDECAY together with the most relevant theoretical and experimental constraints, including electric dipole moments (EDMs), we review the parameter space of the model and discuss its phenomenology. In particular, we find cases where large CP-odd couplings to fermions are still allowed and provide benchmark points for these scenarios. We examine the prospects of discovering CP-violation at the LHC and show how theoretically motivated measures of CP-violation correlate with observables.