7 research outputs found
One-loop formulas for for in 't Hooft-Veltman gauge
In this paper, we present analytical results for one-loop contributing to the
decay processes (for ). The
calculations are performed within the Standard Model framework in 't
Hooft-Veltman gauge. One-loop form factors are then written in terms of scalar
one-loop functions in the standard notations of {\tt LoopTools}. As a result,
one-loop decay rates for the decay channels can be evaluated numerically by
using the package. Furthermore, we analyse the signals of via the production processes including the initial beam
polarizations at future lepton collider. The Standard Model background such as
the processes are also examined in
this study. In numerical results, we find that one-loop corrections are about
contributions to the decay rates. They are sizeable contributions and
should be taken into account at future colliders. We show that the signals
are clearly visible at center-of-mass energy
GeV and it is hard to probe at higher-energy regions due to the
dominant of the background.Comment: 25 page
One-loop expressions for in Higgs extensions of the Standard Model
A systematic study of one-loop contributions to the decay channels
with , performed in
Higgs extended versions of the Standard Model, is presented in the 't
Hooft-Veltman gauge. Analytic formulas for one-loop form factors are expressed
in terms of the logarithm and di-logarithmic functions. As a result, these form
factors can be reduced to those relating to the loop-induced decay processes
, confirming not only previous results
using different approaches but also close relations between the three kinds of
the loop-induced Higgs decay rates. For phenomenological study, we focus on the
two observables, namely the enhancement factors defined as ratios of the decay
rates calculated between the Higgs extended versions and the standard model,
and the forward-backward asymmetries of fermions, which can be used to search
for Higgs extensions of the SM. We show that direct effects of mixing between
neutral Higgs bosons and indirect contributions of charged Higg boson exchanges
can be probed at future colliders.Comment: 39 pages, 9 Figures, 11 Tables of dat
General one-loop formulas for and its applications
We present general one-loop contributions to the decay processes
including all possible the exchange of the
additional heavy vector gauge bosons, heavy fermions, and charged (also
neutral) scalar particles in the loop diagrams. As a result, the analytic
results are valid in a wide class of beyond the standard models. Analytic
formulas for the form factors are expressed in terms of Passarino-Veltman
functions in the standard notations of {\tt LoopTools}. Hence, the decay rates
can be computed numerically by using this package. The computations are then
applied to the cases of the standard model, extension of the
standard model as well as two Higgs doublet model. Phenomenological results of
the decay processes for all the above models are studied. We observe that the
effects of new physics are sizable contributions and these can be probed at
future colliders.Comment: 32 page
One-loop off-shell decay at future colliders
We present one-loop formulas for contributing to the vertex in 't
Hooft-Veltman gauge within Standard Model framework. One-loop off-shell Higgs
decay rates to -pair are investigated in both unpolarized and longitudinal
polarization for bosons in final state. The corrections are range of
to when we vary the off-shell Higgs mass from GeV to GeV.
In applications, we study off-shell Higgs decay in the
Higgs productions at future colliders such as the signal processes
and are analyzed.Comment: Submit to Communications in Physic
Establishment of cancer cell line originating from a patient with high-grade serous ovarian carcinoma
Aim: Ovarian cancer is a serious malignancy with high prevalence and mortality. Methods: We isolated and characterized an ovarian high-grade serous cancer cell line (M4) from a tumor of a Vietnamese patient with ovarian carcinoma. Results: The M4 cancer cell line showed good proliferation and stability in culture. Morphologically, the M4Â cells showed similar characteristics to tumor cells such as a polyhedral shape, large irregular nuclei, high nuclear/cytoplasmic ratio, high nuclear density and expressing cancer markers like CA125, p53 and Ki67Â markers. Conclusion: We have successfully isolated and characterized the M4 cell line from a Vietnamese patient with ovarian carcinoma