Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Romao, Jorge C."'
As LHC's Run3 unfolds, we peer deeper into the couplings of the 125GeV Higgs ($h_{125}$) and also test for extra scalars. Even before such extra scalars are found, one can probe them by using the fact that theories with multiple Higgs doublets allow
Externí odkaz:
http://arxiv.org/abs/2407.19856
We discuss the constraints and phenomenology of the $Z_2 \times Z_2$ three Higgs doublet model (3HDM) with two inert scalars, originating two dark matter (DM) particles. We elucidate the competing vacua and we submit the model to all theoretical and
Externí odkaz:
http://arxiv.org/abs/2407.15933
Autor:
Biekötter, Thomas, Fontes, Duarte, Mühlleitner, Margarete, Romão, Jorge C., Santos, Rui, Silva, João P.
Publikováno v:
JHEP 05 (2024) 127
The complex two-Higgs doublet model (C2HDM) is one of the simplest extensions of the Standard Model with a source of CP-violation in the scalar sector. It has a $\mathbb{Z}_2$ symmetry, softly broken by a complex coefficient. There are four ways to i
Externí odkaz:
http://arxiv.org/abs/2403.02425
Current measurement of the $h\to Z\gamma$ signal strength invite us to speculate about possible new physics interactions that exclusively affect $\mu_{Z\gamma}$ without altering the other signal strengths. Additional consideration of tree-unitarity e
Externí odkaz:
http://arxiv.org/abs/2312.13050
There has been great interest in a model with three Higgs doublets in which fermions with a particular charge couple to a single and distinct Higgs field. We study the phenomenological differences between the two common incarnations of this so-called
Externí odkaz:
http://arxiv.org/abs/2304.13494
It is known that a three Higgs doublet model (3HDM)symmetric under an exact $A_4$ symmetry is not compatible with nonzero quark masses and/or non-block-diagonal CKM matrix. We show that a 3HDM with softly broken $A_4$ terms in the scalar potential do
Externí odkaz:
http://arxiv.org/abs/2301.04676
Publikováno v:
JHEP 03, 031 (2023)
We present general formulas for the oblique-correction parameters $S$, $T$, $U$, $V$, $W$, and $X$ in an extension of the Standard Model having arbitrary numbers of singlet, doublet, and triplet quarks with electric charges $-4/3$, $-1/3$, $2/3$, and
Externí odkaz:
http://arxiv.org/abs/2212.06509
We study the bounded from below (BFB) conditions on a class of three Higgs doublet models (3HDM) constrained by the symmetry groups U(1)xU(1), U(1)xZ2 and Z2xZ2. These constraints must be implemented on both the neutral (BFB-n) and charged (BFB-c) di
Externí odkaz:
http://arxiv.org/abs/2208.01068
There has been a great interest in three Higgs doublet models (3HDM) symmetric under an exact A4 symmetry. We provide the complete analytic necessary and sufficient conditions for a point to be the global minimum along the neutral directions in such
Externí odkaz:
http://arxiv.org/abs/2207.02928
Models with three Higgs doublets (3HDM) are the source of much recent activity, for they are key components of many solutions to the problems of the Standard Model; from extra sources of CP violation to Dark Matter candidates. We compute explicitly t
Externí odkaz:
http://arxiv.org/abs/2204.13130