3 research outputs found
Consistency of New CDF-II W Boson Mass with 123-Model
Following the recent update measurement of the W boson mass performed by the
CDF-II experiment at Fermilab which indicates deviation from the SM
prediction. As a consequence, the open question is whether there are extensions
of the SM that can carry such a remarkable deviation or what phenomenological
repercussions this has. In this paper, we investigate what the theoretical
constraints reveal about the \ott model. Also, we study the consistency of a
CDF W boson mass measurement with the 123-model expectations, taking into
account theoretical and experimental constraints. Both fit results of and
parameters before and after measurement are, moreover,
considered in this study. Under these conditions, we found that the 123-model
prediction is consistent with the measured at a
Confidence Level (CL).Comment: 17 pages, 3 figure
The two Higgs doublet type-II seesaw model: Naturalness and versus heavy Higgs masses
We extend the work \cite{Ouazghour:2018mld} to a more general and detailed
analysis through studying the naturalness problem and physics constraints
within the context of two higgs doublets model augmented with a complex scalar
triplet field (). We first derive the modified Vetman conditions and
show that naturalness problem might be evaded at the electroweak scale. Then,
we evaluate the branching ratio of radiative decay at
the Next to leading order. Besides unitarity, boundedness from below
constraints and the present collider data from Higgs signal rate measurements,
the parameter space of is then revisited to see how the modified
Veltman conditions and experimental bounds induce
significant delimitations. Our analysis shows that the naturalness affects
drastically the masses of heavy Higgs , , and .
More specifically, we considered three benchmak scenarios corresponding to
GeV. For , we find stringent upper limits on
, and at , and GeV
respectively. If, in addition, the measurements of decay
rate are also considered, the lower masses limits of nonstandard Higgs bosons
(, , , , , , ) are pushed up
to higher values located between and GeV. Besides, we also
demonstrate that the experimental limits can only be
accommodated within if two conditions are fullfilled :
parameter positive and the Higgs mass hierarchy
.Comment: 9 pages, 4 figures, LaTe