scholarly journals The anatomy of electroweak symmetry breaking Tome II: The Higgs bosons in the Minimal Supersymmetric Model

2008 ◽  
Vol 459 (1-6) ◽  
pp. 1-241 ◽  
Author(s):  
A DJOUADI
Keyword(s):  
Symmetry Breaking ◽  
Electroweak Symmetry Breaking ◽  
Higgs Bosons ◽  
Supersymmetric Model ◽  
Electroweak Symmetry ◽  
Minimal Supersymmetric Model

scholarly journals A GENERAL HIGGS SECTOR: CONSTRAINTS AND PHENOMENOLOGY

1996 ◽  
Vol 11 (29) ◽  
pp. 5221-5243 ◽  
Author(s):  
ANIRBAN KUNDU ◽  
BISWARUP MUKHOPADHYAYA
Keyword(s):  
Symmetry Breaking ◽  
Precision Measurement ◽  
General Structure ◽  
Higgs Sector ◽  
Electroweak Symmetry Breaking ◽  
Higgs Bosons ◽  
Tree Level ◽  
Electroweak Symmetry ◽  
Interaction Terms ◽  
Scalar Sector

We have investigated some phenomenological aspects of an SU (2) × U (1) scenario where scalars belonging to arbitrary representations of SU(2) are involved in electroweak symmetry breaking. The resulting interaction terms are derived. Some constraints are obtained on the arbitrary scalar sector from the requirement of tree-level unitarity in longitudinal gauge boson scattering. We also show that there is a remarkable complimentarity between the constraints on a general structure from the ρ parameter and those from precision measurement of the [Formula: see text] vertex. Finally, some salient features about the production of such Higgs bosons in e+e− collision are discussed.

scholarly journals A SUPERSYMMETRIC MODEL WITH THE GAUGE SYMMETRY SU(3)1 × SU(2)1 × U(1)1 × SU(3)2 × SU(2)2 × U(1)2

2003 ◽  
Vol 18 (14) ◽  
pp. 967-975 ◽  
Author(s):  
J. G. KÖRNER ◽  
CHUN LIU
Keyword(s):  
Gauge Symmetry ◽  
Standard Model ◽  
Symmetry Breaking ◽  
Supersymmetry Breaking ◽  
Simple Form ◽  
Electroweak Symmetry Breaking ◽  
Supersymmetric Model ◽  
Electroweak Symmetry ◽  
Gauge Groups ◽  
The Standard Model

A supersymmetric model with two copies of the Standard Model gauge groups is constructed in the gauge mediated supersymmetry breaking scenario. The supersymmetry breaking messengers are in a simple form. The Standard Model is obtained after first step gauge symmetry breaking. In the case of one copy of the gauge interactions being strong, a scenario of electroweak symmetry breaking is discussed, and the gauginos are generally predicted to be heavier than the sfermions.

scholarly journals Relativistic freeze-in with scalar dark matter in a gauged B − L model and electroweak symmetry breaking

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Priyotosh Bandyopadhyay ◽  
Manimala Mitra ◽  
Abhishek Roy
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Symmetry Breaking ◽  
Electroweak Symmetry Breaking ◽  
Higgs Bosons ◽  
Thermal Mass ◽  
Electroweak Symmetry ◽  
Mass Correction ◽  
Dark Matter Relic Density ◽  
Bose Einstein

Abstract We explore relativistic freeze-in production of scalar dark matter in gauged B − L model, where we focus on the production of dark matter from the decay and annihilation of Standard Model (SM) and B − L Higgs bosons. We consider the Bose-Einstein (BE) and Fermi-Dirac (FD) statistics, along with the thermal mass correction of the SM Higgs boson in our analysis. We show that in addition to the SM Higgs boson, the annihilation and decay of the B − L scalar can also contribute substantially to the dark matter relic density. Potential effects of electroweak symmetry breaking (EWSB) and thermal mass correction in BE framework enhance the dark matter relic substantially as it freezes-in near EWSB temperature via scalar annihilation. However, such effects are not so prominent when the dark matter freezes-in at a later epoch than EWSB, dominantly by decay of scalars. The results of this analysis are rather generic, and applicable to other similar scenarios.

scholarly journals PROSPECTS FOR HIGGS BOSON SEARCHES AT THE LHC

2008 ◽  
Vol 23 (32) ◽  
pp. 5093-5115 ◽  
Author(s):  
KARL JAKOBS ◽  
MARKUS SCHUMACHER
Keyword(s):  
Higgs Boson ◽  
Large Hadron Collider ◽  
Symmetry Breaking ◽  
Hadron Collider ◽  
Mass Range ◽  
Electroweak Symmetry Breaking ◽  
Higgs Bosons ◽  
Standard Model Higgs Boson ◽  
Electroweak Symmetry ◽  
Cern Large Hadron Collider

The investigation of the dynamics responsible for electroweak symmetry breaking is one of the prime tasks of experiments at the CERN Large Hadron Collider (LHC). The experiments ATLAS and CMS have been designed to be able to discover a Standard Model Higgs boson over the full mass range as well as Higgs bosons in extended models. In this paper, the prospects for Higgs boson searches at the LHC are reviewed. In addition, the potential for the measurement of Higgs boson parameters is discussed.

scholarly journals High-temperature electroweak symmetry breaking by SM twins

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Oleksii Matsedonskyi
Keyword(s):  
Symmetry Breaking ◽  
Sigma Model ◽  
Electroweak Symmetry Breaking ◽  
Higgs Bosons ◽  
Fine Tuning ◽  
Electroweak Symmetry ◽  
Missing Energy ◽  
Modified Model ◽  
Yukawa Couplings ◽  
Model Features

Abstract We analyse a possible adjustment of Twin Higgs models allowing to have broken electroweak (EW) symmetry at all temperatures below the sigma-model scale ∼ 1 TeV. The modification consists of increasing the Yukawa couplings of the twins of light SM fermions. The naturalness considerations then imply a presence of relatively light electroweak-charged fermions, which can be produced at the LHC, and decay into SM gauge and Higgs bosons and missing energy. Analysis of experimental bounds shows that such a modified model features an increased amount of fine-tuning compared to the original Twin Higgs models, but still less tuning than the usual pseudo-Nambu-Goldstone Higgs models not improved by Z2 twin symmetry. The obtained modification in the evolution of the EW symmetry breaking strength can, in particular, have interesting implications for models of EW baryogenesis, which we comment on.

scholarly journals Dark matter spectra from the electroweak to the Planck scale

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Christian W. Bauer ◽  
Nicholas L. Rodd ◽  
Bryan R. Webber
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Symmetry Breaking ◽  
Planck Scale ◽  
Electroweak Symmetry Breaking ◽  
Indirect Detection ◽  
Electroweak Symmetry ◽  
Stable States ◽  
Decay Spectrum ◽  
Crucial Ingredient

Abstract We compute the decay spectrum for dark matter (DM) with masses above the scale of electroweak symmetry breaking, all the way to the Planck scale. For an arbitrary hard process involving a decay to the unbroken standard model, we determine the prompt distribution of stable states including photons, neutrinos, positrons, and antiprotons. These spectra are a crucial ingredient in the search for DM via indirect detection at the highest energies as being probed in current and upcoming experiments including IceCube, HAWC, CTA, and LHAASO. Our approach improves considerably on existing methods, for instance, we include all relevant electroweak interactions.

scholarly journals ANOMALOUS U(1)A AND ELECTROWEAK SYMMETRY BREAKING

2001 ◽  
Vol 16 (13) ◽  
pp. 835-844
Author(s):  
ILIA GOGOLADZE ◽  
MIRIAN TSULAIA
Keyword(s):  
Gauge Symmetry ◽  
Standard Model ◽  
Symmetry Breaking ◽  
Supersymmetric Standard Model ◽  
Electroweak Symmetry Breaking ◽  
Electroweak Symmetry ◽  
Superstring Theory

We suggest a new mechanism for electroweak symmetry breaking in the supersymmetric Standard Model. Our suggestion is based on the presence of an anomalous U (1)A gauge symmetry, which naturally arises in the four-dimensional superstring theory, and heavily relies on the value of the corresponding Fayet–Illiopoulos ξ-term.

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