https://doi.org/10.1140/epjc/s10052-016-4167-9
Regular Article - Theoretical Physics
Two-Higgs-doublet type-II and -III models and 
at the LHC
1
Département de Mathématiques, Faculté des Sciences et Techniques, Université Abdelmalek Essaadi, B. 416, Tangier, Morocco
2
Physics Division, National Center for Theoretical Sciences, Hsinchu, 300, Taiwan
3
LPHEA, Semlalia, Cadi Ayyad University, Marrakech, Morocco
4
MSISM Team, Faculté Polydisciplinaire de Safi, Sidi Bouzid, B.P 4162, 46000, Safi, Morocco
5
Department of Physics, National Cheng-Kung University, Tainan, 70101, Taiwan
6
DAFM, Universidad de las Américas Puebla, Ex. Hda. Sta. Catarina Mártir, 72810, Cholula, PUE, Mexico
* e-mail: rbenbrik@ictp.it
Received:
11
February
2016
Accepted:
30
May
2016
Published online:
15
June
2016
We study the constraints of the generic two-Higgs-doublet model (2HDM) type-III and the impacts of the new Yukawa couplings. For comparisons, we revisit the analysis in the 2HDM type-II. To understand the influence of all involving free parameters and to realize their correlations, we employ a 
-square fitting approach by including theoretical and experimental constraints, such as the S, T, and U oblique parameters, the production of standard model Higgs and its decay to 
, 
, 
, etc. The errors of the analysis are taken at 68, 95.5, and 
confidence levels. Due to the new Yukawa couplings being associated with 
and 
, we find that the allowed regions for 
and 
in the type-III model can be broader when the dictated parameter 
is positive; however, for negative , the limits are stricter than those in the type-II model. By using the constrained parameters, we find that the deviation from the SM in 
can be of 
. Additionally, we also study the top-quark flavor-changing processes induced at the tree level in the type-III model and find that when all current experimental data are considered, we get 
for 
and 
GeV, and 
slightly exceeds 
for 
GeV.
© The Author(s), 2016
