scholarly journals High energy behavior ofγγ→ff¯processes in the standard model and minimal supersymmetric standard model

2001 ◽  
Vol 64 (5) ◽  
Author(s):  
J. Layssac ◽  
F. M. Renard
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
High Energy ◽  
High Energy Behavior ◽  
Energy Behavior ◽  
The Standard Model

INTERMEDIATE AND HIGH ENERGY BEHAVIOR OF THE SU(5)C MODEL

1994 ◽  
Vol 09 (31) ◽  
pp. 5625-5634 ◽  
Author(s):  
KRISHNANATH BANDYOPADHYAY ◽  
SASWATI SARKAR ◽  
ASIM K. RAY
Keyword(s):  
Standard Model ◽  
Cross Section ◽  
High Energy ◽  
High Energy Behavior ◽  
Energy Behavior ◽  
The Standard Model ◽  
Asymmetry Parameters

We have shown that the SU(5) C model cannot be distinguished from the Standard Model by measuring the spin-averaged cross-section and forward-backward asymmetry parameters in the processes [Formula: see text] near the Z peak and in the nonresonant sector. However, the e+e−→μ+μ− process can distinguish the SU(5) C model from the Standard Model in the nonresonant sector at the level of 2σ effect when MZ is around 100 GeV.

scholarly journals INFLATION AND THE MINIMAL SUPERSYMMETRIC STANDARD MODEL

2008 ◽  
Vol 23 (33) ◽  
pp. 2799-2809 ◽  
Author(s):  
ROUZBEH ALLAHVERDI
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Parameter Space ◽  
High Energy Physics ◽  
Hadron Collider ◽  
High Energy ◽  
Wilkinson Microwave Anisotropy Probe ◽  
Cosmological Data ◽  
Superluminal Expansion

There is strong evidence from cosmological data that the universe underwent an epoch of superluminal expansion called inflation. A satisfactory embedding of inflation in fundamental physics has been an outstanding problem at the interface of cosmology and high energy physics. We show how inflation can be realized within the Minimal Supersymmetric Standard Model (MSSM). The inflaton candidates are two specific combinations of supersymmetric partners of quarks and leptons. MSSM inflation occurs at a low scale and generates perturbations in the range experimentally allowed by the latest data from Wilkinson Microwave Anisotropy Probe (WMAP). The parameter space for inflation is compatible with supersymmetric dark matter, and the Large Hadron Collider (LHC) is capable of discovering the inflaton candidates in the allowed regions of parameter space.

scholarly journals SUPERSYMMETRIC U(1) GAUGE REALIZATION OF THE DARK SCALAR DOUBLET MODEL OF RADIATIVE NEUTRINO MASS

2008 ◽  
Vol 23 (10) ◽  
pp. 721-725 ◽  
Author(s):  
ERNEST MA
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Neutrino Mass ◽  
Dark Matter Candidate ◽  
Neutrino Masses ◽  
Particle Interactions ◽  
The Standard Model ◽  
Doublet Model

Adding a second scalar doublet (η+, η0) and three neutral singlet fermions N1, 2, 3 to the Standard Model of particle interactions with a new Z2 symmetry, it has been shown that [Formula: see text] or [Formula: see text] is a good dark-matter candidate and seesaw neutrino masses are generated radiatively. A supersymmetric U(1) gauge extension of this new idea is proposed, which enforces the usual R-parity of the Minimal Supersymmetric Standard Model, and allows this new Z2 symmetry to emerge as a discrete remnant.

scholarly journals RENORMALIZATION RUNNING OF MASSES AND MIXINGS IN UED MODELS

2013 ◽  
Vol 28 (11) ◽  
pp. 1330007 ◽  
Author(s):  
A. S. CORNELL ◽  
ALDO DEANDREA ◽  
LU-XIN LIU ◽  
AHMAD TARHINI
Keyword(s):  
Renormalization Group ◽  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Evolution Equations ◽  
Mixing Angles ◽  
The Standard Model ◽  
Group Evolution ◽  
Matter Fields

We review the renormalization group evolution of quark and lepton masses, mixing angles and phases both in the UED extension of the Standard Model (SM) and of the Minimal Supersymmetric Standard Model (MSSM). We consider two typical scenarios: all matter fields propagating in the bulk and matter fields constrained to the brane. The resulting renormalization group evolution equations in these scenarios are compared with the existing results in the literature, together with their implications.

$B_0\bar B_0$-Mixing Involving Supersymmetry

1997 ◽  
Vol 12 (06) ◽  
pp. 419-426 ◽  
Author(s):  
J. Urban ◽  
F. Krauss ◽  
Ch. Hofmann ◽  
G. Soff
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Higgs Mass ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Feynman Diagrams ◽  
Lower Edge ◽  
Expectation Value ◽  
The Standard Model

We calculate all relevant Feynman-diagrams in lowest order for [Formula: see text]-mixing. We add to the Standard Model (SM) two scalar Higgs-doublets and take into account the Minimal Supersymmetric Standard Model (MSSM). Within the Standard Model which has been extended by two Higgs-doublets we find the following relation between the Higgs-mass and its vacuum expectation value (vev): mH=5000/7(au-0.43). Inclusion of the MSSM pushes the value of Vtd to the lower edge of the experimentally allowed range.

Sign in / Sign up

Export Citation Format

Share Document