scholarly journals Rare charm meson decaysD→Pl+l−andc→ul+l−in the standard model and the minimal supersymmetric standard model

2001 ◽  
Vol 64 (11) ◽  
Author(s):  
S. Fajfer ◽  
S. Prelovsek ◽  
P. Singer
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Charm Meson ◽  
The Standard Model ◽  
Rare Charm

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.

INFORMATION ON CP-VIOLATING PHASES AS A BONUS IN THE SEARCHES FOR THE LEPTON FLAVOR VIOLATING PROCESSES

2009 ◽  
Vol 24 (18n19) ◽  
pp. 3403-3413 ◽  
Author(s):  
Y. FARZAN
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Precision Measurement ◽  
Lepton Flavor ◽  
Underlying Theory ◽  
The Standard Model ◽  
Combining Information ◽  
Final Particles

Although in the framework of the Standard Model (SM) of particles, Lepton Flavor Violating (LFV) processes such as µ → eγ, µ → eee and µN → eN are strictly forbidden, in various beyond SM scenarios such as Minimal Supersymmetric Standard Model (MSSM), new sources of LFV appear that can lead to sizeable rates for these processes. There are on-going experiments that search for the LFV processes. If the rates of these processes are close to the present bound, these experiments will collect abundant amount of data which makes precision measurement of LFV parameters a close possibility. We show that by studying the polarization of the final particles, information on the CP-violating phases of the underlying theory can be also derived. We discuss the possibility to reduce the degeneracy of parameters by combining information from various experiments.

scholarly journals TRILINEAR NEUTRAL GAUGE BOSON COUPLINGS

2001 ◽  
Vol 16 (30) ◽  
pp. 4891-4909 ◽  
Author(s):  
DEBAJYOTI CHOUDHURY ◽  
SUKANTA DUTTA ◽  
SUBHENDU RAKSHIT ◽  
SAURABH RINDANI
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Gauge Boson ◽  
Form Factors ◽  
Neutral Gauge Boson ◽  
The Standard Model ◽  
Vector Bosons ◽  
Gauge Boson Couplings

We study the CP even trilinear neutral gauge boson vertices at one-loop in the context of the Standard Model and the Minimal Supersymmetric Standard Model, assuming two of the vector bosons are on-shell. We also study the changes in the form-factors when these two bosons are off-shell.

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