CP-Violation in the 3-Higgs Doublet Model: CP-Asymmetries from Charged Higgs Bosons and Electric Dipole Moments

Abstract

We propose a CP-violating source in the charged Higgs sector of a 3-Higgs Doublet Model (3HDM) that will contribute to three CP-asymmetry observables for low energy processes. In the context of such a 3HDM, a measurement of one of the specific asymmetry observables (i.e., $\bar{B}\to X_{s+d}\gamma$) could obtain up to 2.5% or more, which would give a 5$\sigma$ evidence for physics Beyond the SM (BSM) from the full BELLE II data set. In addition to these CP-violating observables, the current measurements of Electron Dipole Moments (EDMs) constrain the available parameter region of the CP-violating 3HDM. In this work, we perform a thorough analysis of the parameter space of it to find the regions that satisfy EDMs, $\bar{B}\to X_s\gamma$, direct collider searches for charged Higgs bosons as well as theoretical bounds.

Comments: 30 pages, 45 figures, references added, "Status of Charged Higgs Searches at the LHC and Physics Prospects for the Charged Higgs at HL-LHC", 30-31 August 2021, proceeding to "Symmetry, Collider Phenomenology and High Energy Physics" of Symmetry MDPI, drawn from arXiv: 2012.08846 and 2009.05779