scholarly journals ρ PARAMETER IN THE VECTOR CONDENSATE MODEL OF ELECTROWEAK INTERACTIONS

1994 ◽  
Vol 09 (18) ◽  
pp. 1701-1705 ◽  
Author(s):  
G. CYNOLTER ◽  
E. LENDVAI ◽  
G. POCSIK
Keyword(s):  
Gauge Symmetry ◽  
Standard Model ◽  
Vector Boson ◽  
Higgs Doublet ◽  
Electroweak Interactions ◽  
Gauge Bosons ◽  
Momentum Scale ◽  
The Standard Model ◽  
Vector Bosons

In the standard model of electroweak interactions the Higgs doublet is replaced by a doublet of vector bosons and the gauge symmetry is broken dynamically. This generates masses for the gauge bosons and fermions as well as it fixes the interactions in the model. The model has a low momentum scale. In this note we show that the model survives the test of the ρ parameter, and to each momentum scale ρ chooses a possible range of vector boson masses.

scholarly journals OBLIQUE RADIATIVE CORRECTIONS IN THE VECTOR CONDENSATE MODEL OF ELECTROWEAK INTERACTIONS

1995 ◽  
Vol 10 (29) ◽  
pp. 2193-2196 ◽  
Author(s):  
G. CYNOLTER ◽  
E. LENDVAI ◽  
G. PÓCSIK
Keyword(s):  
Gauge Symmetry ◽  
Standard Model ◽  
Vector Boson ◽  
Higgs Doublet ◽  
Radiative Corrections ◽  
Momentum Scale ◽  
The Standard Model ◽  
Vector Bosons ◽  
Neutral Vector ◽  
The Masses

Oblique radiative corrections are calculated to the parameter S in a version of the standard model where the Higgs doublet is replaced by a doublet of vector bosons and the gauge symmetry is broken dynamically. We show that to each momentum scale there exists a domain of the masses of charged and neutral vector bosons where S is compatible with the experiments. At a scale of 1 TeV this requires vector boson masses of at least m0 ≈ 400–550 GeV , m+ ≈ 200–350 GeV .

VECTOR BOSON DOMINANCE OF ELECTROWEAK INTERACTIONS

1993 ◽  
Vol 08 (33) ◽  
pp. 3129-3138 ◽  
Author(s):  
YU. F. PIROGOV
Keyword(s):  
Field Theory ◽  
Standard Model ◽  
Vector Boson ◽  
Local Symmetry ◽  
Higgs Bosons ◽  
Quantum Field ◽  
Gauge Bosons ◽  
The Standard Model ◽  
Vector Bosons ◽  
Common Substructure

The linearization of the nonlinear standard model G/H= SU(3) L × U(1)/SU(2) L × U(1) via the hidden local symmetry H loc = SU(2) L × U(1) is considered. Mixing of the light elementary gauge bosons of the standard model with the dynamically generated heavy composite vector bosons is studied under the hypothesis of vector boson dominance. The model is theoretically consistent as quantum field theory and phenomenologically acceptable. It can be used as a guide to study systematically the deviations from the standard model due to a common substructure of leptons, quarks and Higgs bosons.

scholarly journals The Standard Model of Electroweak Interactions

2020 ◽  
pp. 35-81
Author(s):  
Guido Altarelli ◽  
Stefano Forte
Keyword(s):  
Gauge Symmetry ◽  
Standard Model ◽  
Matter Content ◽  
Higgs Particle ◽  
Electroweak Interactions ◽  
The Standard Model ◽  
Vector Bosons ◽  
Intermediate Vector

AbstractIn this chapter, we summarize the structure of the standard EW theory and specify the couplings of the intermediate vector bosons W±, Z and of the Higgs particle with the fermions and among themselves, as dictated by the gauge symmetry plus the observed matter content and the requirement of renormalizability

scholarly journals ANOMALOUS HIGGS COUPLINGS

1999 ◽  
Vol 14 (20) ◽  
pp. 3121-3156 ◽  
Author(s):  
M. C. GONZALEZ-GARCIA
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Higgs Doublet ◽  
New Physics ◽  
Boson Production ◽  
Gauge Bosons ◽  
Effective Interactions ◽  
Decay Modes ◽  
Effective Lagrangian ◽  
The Standard Model

We review the effects of new effective interactions on Higgs-boson phenomenology. New physics in the electroweak bosonic sector is expected to induce additional interactions between the Higgs doublet field and the electroweak gauge bosons, leading to anomalous Higgs couplings as well as anomalous gauge-boson self-interactions. Using a linearly realized SU (2)L× U (1)Y invariant effective Lagrangian to describe the bosonic sector of the Standard Model, we review the effects of the new effective interactions on the Higgs-boson production rates and decay modes. We summarize the results from searches for the new Higgs signatures induced by the anomalous interactions in order to constrain the scale of new physics, in particular at CERN LEP and Fermilab Tevatron colliders.

POSSIBLE EFFECTS OF ADDITIONAL VECTOR BOSONS IN $e^+ e^- \to f\bar{f}$ AT THE TRISTAN ENERGIES

1992 ◽  
Vol 07 (22) ◽  
pp. 5537-5548
Author(s):  
A.A. LIKHODED ◽  
A.A. PANKOV ◽  
O.P. YUSHCHENKO
Keyword(s):  
Standard Model ◽  
Composite Structure ◽  
Model Parameters ◽  
Electroweak Interactions ◽  
The Standard Model ◽  
Model Predictions ◽  
Vector Bosons

The phenomenological manifestation of the additional Y(YL) boson arising in models with the composite structure of electroweak interactions is studied for the process [Formula: see text] at the TRISTAN energies [Formula: see text]. It is shown that the experimentally observed deviation of Rμ from the Standard Model predictions can be explained by the presence of the additional isoscalar Y boson in the region of a small mixing paramenter. The increase of statistics for the above processes at TRISTAN will permit one to set an additional limit on the model parameters.

scholarly journals Composite Dark Matter and a horizontal symmetry

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Alexandre Carvunis ◽  
Diego Guadagnoli ◽  
Méril Reboud ◽  
Peter Stangl
Keyword(s):  
Dark Matter ◽  
Gauge Symmetry ◽  
Standard Model ◽  
Mass Scale ◽  
Flavor Symmetry ◽  
Gauge Bosons ◽  
Weakly Coupled ◽  
Horizontal Symmetry ◽  
The Standard Model ◽  
The One

Abstract We present a model of composite Dark Matter (DM), in which a new QCD-like confining “hypercolor” sector generates naturally stable hyperbaryons as DM candidates and at the same time provides mass to new weakly coupled gauge bosons H that serve as DM mediators, coupling the hyperbaryons to the Standard Model (SM) fermions. By an appropriate choice of the H gauge symmetry as a horizontal SU(2)h SM flavor symmetry, we show how the H gauge bosons can be identified with the horizontal gauge bosons recently put forward as an explanation for discrepancies in rare B-meson decays. We find that the mass scale of the H gauge bosons suggested by the DM phenomenology intriguingly agrees with the one needed to explain the rare B-decay discrepancies.

scholarly journals Model-Independent Bounds on Kinetic Mixing

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Anson Hook ◽  
Eder Izaguirre ◽  
Jay G. Wacker
Keyword(s):  
Standard Model ◽  
Energy Range ◽  
Gauge Boson ◽  
Vector Boson ◽  
Mass Range ◽  
The Standard Model ◽  
Vector Bosons ◽  
Model Independent

New Abelian vector bosons can kinetically mix with the hypercharge gauge boson of the Standard Model. This letter computes the model-independent limits on vector bosons with masses from 1 GeV to 1 TeV. The limits arise from the numerouse+e−experiments that have been performed in this energy range and bound the kinetic mixing byϵ≲0.03for most of the mass range studied, regardless of any additional interactions that the new vector boson may have.

scholarly journals Family number, Wilson line phases and hidden supersymmetry

2014 ◽  
Vol 29 (26) ◽  
pp. 1450150 ◽  
Author(s):  
Yuhei Goto ◽  
Yoshiharu Kawamura ◽  
Takashi Miura
Keyword(s):  
Gauge Symmetry ◽  
Standard Model ◽  
Wilson Line ◽  
Quantum Mechanical ◽  
Gauge Bosons ◽  
The Family ◽  
The Standard Model ◽  
The Relationship

We study the relationship between the family number of chiral fermions and the Wilson line phases, based on the orbifold family unification. We find that flavor numbers are independent of the Wilson line phases relating extra-dimensional components of gauge bosons, as far as the standard model gauge symmetry is respected. This feature originates from a hidden quantum-mechanical supersymmetry.

scholarly journals PREDICTED SIGNATURES AT THE LHC FROM U(1) EXTENSIONS OF THE STANDARD MODEL

2010 ◽  
Vol 25 (36) ◽  
pp. 3003-3016 ◽  
Author(s):  
PRAN NATH
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Vector Boson ◽  
Hadron Collider ◽  
Mass Growth ◽  
Hidden Sector ◽  
Quantum Numbers ◽  
The Standard Model ◽  
Vector Bosons

We discuss the U (1)X extensions of the standard model with focus on the Stueckelberg mechanism for mass growth for the extra U (1)X gauge boson. The assumption of an axionic connector field which carries dual U(1) quantum numbers, i.e. quantum numbers for the hypercharge U(1) Y and for the hidden sector gauge group U (1)X, allows a nontrivial mixing between the mass growth for the neutral gauge vector bosons in the SU(2) L × U (1)Y sector and the mass growth for the vector boson by the Stueckelberg mechanism in the U (1)X sector. This results in an extra Z′ which can be very narrow, but still detectable at the Large Hadron Collider (LHC). The U (1)X extension of the minimal supersymmetric standard model is also considered and the role of the Fayet–Illiopoulos term in such an extension discussed. The U (1)X extensions of the SM and of the MSSM lead to new candidates for dark matter.

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