Probing CP-violating Higgs sectors via the precision measurement of coupling constants

Self Cite

We discuss the effect of CP violation in the aligned scenario of the general two-Higgs-doublet model, in which the Higgs potential and the Yukawa interaction provide additional CP-violating phases. An alignment is imposed to the Yukawa interaction in order to avoid dangerous flavor changing neutral currents. The Higgs potential is also aligned such that the coupling constants of the lightest Higgs boson, which is identified as the discovered Higgs boson with the mass of 125 GeV, are the same as those of the standard model. In general, CP-violating phases originated by the Yukawa interaction and the Higgs potential are strongly constrained by the current data for the electric dipole moment (EDM). It is found that in our scenario contributions from the two sources of CP violation can be destructive and consequently their total contribution can satisfy the EDM results, even when each CP-violating phase is large. Such a large CP-violating phase can be tested at collider experiments by looking at the angular distributions of particles generated by the decays of the additional Higgs bosons.

Section: Introductionmentioning

confidence: 99%

Aligned CP-violating Higgs sector canceling the electric dipole moment

Kanemura

Kubota

Yagyu

2020

Self Cite

“…A Two-Higgs Doublet Model (2HDM) is able to realize electroweak baryogenesis [5], and the relevant CP violation (CPV) may appear in electric dipole moments (EDMs) of fermions [6][7][8][9][10][11][12]. Such CP violation effect could be probed as well in the future collider experiments [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Electron EDM and muon anomalous magnetic moment in two-Higgs-doublet models

Chun

Kim

Mondal

2019

“…Then, the combinations C , C 2 and C 3 have δα 5 , δα 4 and δα 0 as independent, respectively, given by: 33 δα 5…”

Section: Jhep06(2021)016mentioning

confidence: 99%

“…This model, characterized by a softly broken Z 2 symmetry and complex parameters in the scalar potential, was originally discussed in ref. [15], having been later developed and used by many authors [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. It describes a rich phenomenology, featuring five physical scalars: a charged Higgs pair and three neutral scalars which are in general a mixture of a CP-even and a CP-odd component.…”

Section: Jhep06(2021)016 1 Introductionmentioning

confidence: 99%

Renormalization of the C2HDM with FeynMaster 2

Fontes

Romão

2021

We present the one-loop electroweak renormalization of the CP-violating 2-Higgs-Doublet Model with softly broken ℤ2 symmetry (C2HDM). The existence of CP violation in the scalar sector of the model leads to a quite unique process of renormalization, since it requires the introduction of several non-physical parameters. The C2HDM will thus have more independent counterterms than independent renormalized parameters. As a consequence, different combinations of counterterms can be taken as independent for the same set of independent renormalized parameters. We compare the behaviour of selected combinations in specific NLO processes, which are assured to be gauge independent via a simple prescription. FeynMaster 2 is used to derive the Feynman rules, counterterms and one-loop processes in a simultaneously automatic and flexible way. This illustrates its use as an ideal tool to renormalize models such as the C2HDM and investigate them at NLO.