English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Updates and New Results in Models with Reduced Couplings

MPS-Authors

Zoupanos ,  George
AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

2002.10983.pdf
(Preprint), 3MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Heinemeyer, S., Mondragón, M., Patellis, G., Tracas, N., & Zoupanos, G. (2020). Updates and New Results in Models with Reduced Couplings. Fortschritte der Physik, 68(6): 2000028. doi:10.1002/prop.202000028.


Cite as: https://hdl.handle.net/21.11116/0000-0005-DEF0-2
Abstract
The idea of reduction of couplings consists in searching for renormalization
group invariant relations between parameters of a renormalizable theory that
hold to all orders of perturbation theory. Based on the principle of the
reduction of couplings, one can construct Finite Unified Theories (FUTs) which
are $N=1$ supersymmetric Grand Unified Theories that can be made all-order
finite. The prediction of the top quark mass well in advance of its
experimental discovery and the prediction of the light Higgs boson mass in the
range $\sim 121-126$ GeV much earlier than its experimental discovery are among
the celebrated successes of such models. Here, after a brief review of the
reduction of couplings method and the properties of the resulting finiteness in
supersymmetric theories, we analyse four phenomenologically favoured models: a
minimal version of the $N=1$ $SU(5)$, a finite $N=1$ $SU(5)$, a $N=1$ finite
$SU(3)\otimes SU(3)\otimes SU(3)$ model and a reduced version of the Minimal
Supersymmetric Standard Model (MSSM). A relevant update in the phenomenological
evaluation has been the improved light Higgs-boson mass prediction as provided
by the latest version of $\texttt{FeynHiggs}$. All four models predict
relatively heavy supersymmetric spectra that start just below or above the TeV
scale, consistent with the non-observation LHC results. Depending on the model,
the lighter regions of the spectra could be accessible at CLIC, while the
FCC-hh will be able to test large parts of predicted spectrum of each model.
The lightest supersymmetric particle (LSP), which is a neutralino, is
considered as a cold dark matter candidate and put to test using the latest
$\texttt{MicrOMEGAs}$ code.