scholarly journals Mass scale of vectorlike matter and superpartners from IR fixed point predictions of gauge and top Yukawa couplings

2018 ◽  
Vol 97 (5) ◽  
Author(s):  
Radovan Dermíšek ◽  
Navin McGinnis
Keyword(s):  
Fixed Point ◽  
Mass Scale ◽  
Yukawa Couplings

scholarly journals Large Mass Scale by Strong Gauge Dynamics with Infrared Fixed Point

2005 ◽  
Vol 113 (2) ◽  
pp. 413-427 ◽  
Author(s):  
T. Kobayashi ◽  
H. Nakano ◽  
H. Terao ◽  
Y. Yamada
Keyword(s):  
Fixed Point ◽  
Large Mass ◽  
Mass Scale

scholarly journals Relating a Gluon Mass Scale to an Infrared Fixed Point in Pure Gauge QCD

2003 ◽  
Vol 90 (15) ◽  
Author(s):  
A. C. Aguilar ◽  
A. A. Natale ◽  
P. S. Rodrigues da Silva
Keyword(s):  
Fixed Point ◽  
Mass Scale ◽  
Gluon Mass ◽  
Pure Gauge

scholarly journals CP violations in a predictive A4 symmetry model

2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
T Phong Nguyen ◽  
L T Hue ◽  
D T Si ◽  
T T Thuc
Keyword(s):  
Neutrino Mass ◽  
Branching Ratio ◽  
Mass Scale ◽  
Double Beta Decay ◽  
Inverted Hierarchy ◽  
Yukawa Couplings ◽  
Cp Violations ◽  
Physical Consequences ◽  
The Right ◽  
O 10

Abstract We will investigate numerically a seesaw model with $A_4$ flavor symmetry to find allowed regions satisfying the current experimental neutrino oscillation data, then use them to predict physical consequences. Namely, the lightest active neutrino mass is of the order of $\mathcal{O}(10^{-2})$ eV. The effective neutrino mass $|\langle m\rangle|$ associated with neutrinoless double beta decay is in the range $[0.002 \,\mathrm{eV},0.038\,\mathrm{eV}]$ and $[0.048\,\mathrm{eV},0.058\,\mathrm{eV}]$, corresponding to the normal and the inverted hierarchy schemes, respectively. Other relations among relevant physical quantities are shown, so that they can be determined if some of them are confirmed experimentally. The recent data of the baryon asymmetry of the Universe ($\eta_B$) can be explained via leptogenesis caused by the effect of the renormalization group evolution on the Dirac Yukawa couplings, provided the right-handed neutrino mass scale $M_0$ ranges from $\mathcal{O}(10^8)$ GeV to $\mathcal{O}(10^{12})$ GeV for $\tan\beta =3$. This allowed $M_0$ range is different from the scale of $\mathcal{O}(10^{13})$ GeV for other effects that also generate a consistent $\eta_B$ from leptogenesis. The branching ratio of the decay $ \mu \rightarrow\,e\gamma$ may reach future experimental sensitivity for very light values of $M_0$. Hence, it will be inconsistent with the $M_0$ range predicted from the $\eta_B$ data whenever this decay is detected experimentally.

scholarly journals NEUTRINO MASS MATRICES IN MODELS WITH HORIZONTAL SYMMETRIES

2001 ◽  
Vol 16 (36) ◽  
pp. 2345-2352 ◽  
Author(s):  
ASIM K. RAY ◽  
UTPAL SARKAR
Keyword(s):  
Neutrino Mass ◽  
Majorana Neutrino ◽  
Mass Scale ◽  
Lepton Number ◽  
Yukawa Couplings ◽  
Lepton Number Violation ◽  
Mass Matrices ◽  
The Standard Model ◽  
Low Mass ◽  
Majorana Neutrino Mass

We have studied the most general neutrino mass matrices in models with SU(2) and SU(3) horizontal symmetries. Without going into the details of the models it is possible to write down the effective operators, which predict the structure of the Majorana neutrino mass matrices. Unlike other extensions of the standard model, the structure is now independent of the effective Yukawa couplings and depends entirely on the Higgs which gives mass to the other fermions. In the case of SU(3) symmetries the lowest dimensional operators are forbidden requiring a low mass scale for lepton number violation.

MULTI-HIGGS SYSTEMS IN BOSONIC TECHNICOLOR: A MODEL FOR SSC PHYSICS

1992 ◽  
Vol 07 (06) ◽  
pp. 1123-1186 ◽  
Author(s):  
ALEX KAGAN ◽  
STUART SAMUEL
Keyword(s):  
Salient Feature ◽  
Higgs Sector ◽  
Mass Scale ◽  
Mixing Angles ◽  
Yukawa Couplings ◽  
Flavor Problem ◽  
Order Of Magnitude ◽  
Judicious Choice ◽  
The Right ◽  
Right Order

Multi-Higgs systems are combined with bosonic technicolor to construct a viable model of TeV physics. In such models, there is potentially a flavor problem in either the supersymmetric or the Higgs sector. However, the naturally larger mass scale for supersymmetry breaking and Higgs masses, which is a salient feature of bosonic technicolor, allows one to resolve the GUT-hierarchy problem without large flavor violation. With a judicious choice of the Higgs system, hierarchies of family masses and mixing angles of the right order of magnitude are achieved without resorting to small Yukawa couplings. Some of these masses and mixing angles are generated by radiative corrections. At energies below 100 GeV the standard model is reproduced, whereas at TeV energies a rich phenomenology of supersymmetric states and techni-hadrons is predicted. We present precise formulas to describe many aspects of the model and its phenomenology at tree and one-loop levels.

Mental equilibrium: Identifying fixed-point attractors in the stream of thought

2003 ◽  
Author(s):  
Robin R. Vallacher ◽  
Andrzej Nowak ◽  
Matthew Rockloff
Keyword(s):  
Fixed Point

Bifurcation in a Simple Model of the Cardiovascular System

2000 ◽  
Vol 39 (02) ◽  
pp. 118-121 ◽  
Author(s):  
S. Akselrod ◽  
S. Eyal
Keyword(s):  
Nonlinear Dynamics ◽  
Blood Pressure ◽  
Heart Rate ◽  
Fixed Point ◽  
Cardiovascular System ◽  
Modified Model ◽  
Mayer Waves ◽  
Sustained Oscillations ◽  
Human Cardiovascular System ◽  
Physiological Values

Abstract:A simple nonlinear beat-to-beat model of the human cardiovascular system has been studied. The model, introduced by DeBoer et al. was a simplified linearized version. We present a modified model which allows to investigate the nonlinear dynamics of the cardiovascular system. We found that an increase in the -sympathetic gain, via a Hopf bifurcation, leads to sustained oscillations both in heart rate and blood pressure variables at about 0.1 Hz (Mayer waves). Similar oscillations were observed when increasing the -sympathetic gain or decreasing the vagal gain. Further changes of the gains, even beyond reasonable physiological values, did not reveal another bifurcation. The dynamics observed were thus either fixed point or limit cycle. Introducing respiration into the model showed entrainment between the respiration frequency and the Mayer waves.

RHYNCHOLITES AND THE PROBLEM OF NARROW AND BROAD CONCEPTION OF TAXONS

2018 ◽  
pp. 12-17 ◽  
Author(s):  
I. R. Khuzina ◽  
V. N. Komarov
Keyword(s):  
Sexual Dimorphism ◽  
Morphological Characteristics ◽  
Mass Scale ◽  
Individual Variability ◽  
Point Of View ◽  
The Other ◽  
New Taxon ◽  
Artificial System ◽  
Broad Understanding

The paper considers a point of view, based on the conception of the broad understanding of taxons. According to this point of view, rhyncholites of the subgenus Dentatobeccus and Microbeccus are accepted to be synonymous with the genus Rhynchoteuthis, and subgenus Romanovichella is considered to be synonymous with the genus Palaeoteuthis. The criteria, exercising influence on the different approaches to the classification of rhyncholites, have been analyzed (such as age and individual variability, sexual dimorphism, pathological and teratological features, degree of disintegration of material), underestimation of which can lead to inaccuracy. Divestment of the subgenuses Dentatobeccus, Microbeccus and Romanovichella, possessing very bright morphological characteristics, to have an independent status and denomination to their synonyms, has been noted to be unjustified. An artificial system (any suggested variant) with all its minuses is a single probable system for rhyncholites. The main criteria, minimizing its negative sides and proving the separation of the new taxon, is an available mass-scale material. The narrow understanding of the genus, used in sensible limits, has been underlined to simplify the problem of the passing the view about the genus to the other investigators and recognition of rhyncholites for the practical tasks.

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