Some Recent Results on Models of Dynamical Electroweak Symmetry Breaking

Shrock, R.

doi:10.1142/9789812790750_0023

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…Specific implementations of these ideas face phenomenological challenges pertaining to flavor-changing neutral currents, the large top-quark mass, and precision electroweak measurements, but the idea of dynamical symmetry breaking remains an important alternative to the standard elementary scalar. For reviews and a summary of recent developments, see [78,79,80,181].…”

Section: Dynamical Symmetry Breakingmentioning

confidence: 99%

Unanswered Questions in the Electroweak Theory

Quigg

2009

Annu. Rev. Nucl. Part. Sci.

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This article is devoted to the status of the electroweak theory on the eve of experimentation at CERN's Large Hadron Collider. A compact summary of the logic and structure of the electroweak theory precedes an examination of what experimental tests have established so far. The outstanding unconfirmed prediction of the electroweak theory is the existence of the Higgs boson, a weakly interacting spin-zero particle that is the agent of electroweak symmetry breaking, the giver of mass to the weak gauge bosons, the quarks, and the leptons. General arguments imply that the Higgs boson or other new physics is required on the TeV energy scale. Indirect constraints from global analyses of electroweak measurements suggest that the mass of the standard-model Higgs boson is less than 200 GeV. Once its mass is assumed, the properties of the Higgs boson follow from the electroweak theory, and these inform the search for the Higgs boson. Alternative mechanisms for electroweak symmetry breaking are reviewed, and the importance of electroweak symmetry breaking is illuminated by considering a world without a specific mechanism to hide the electroweak symmetry.For all its triumphs, the electroweak theory has many shortcomings. It does not make specific predictions for the masses of the quarks and leptons or for the mixing among different flavors. It leaves unexplained how the Higgs-boson mass could remain below 1 TeV in the face of quantum corrections that tend to lift it toward the Planck scale or a unification scale. The Higgs field that must pervade all of space to hide the electroweak symmetry contributes a vacuum energy density far in excess of what is observed. And the electroweak theory responds inadequately to challenges raised by astronomical observations, including the dark-matter problem and the baryon asymmetry of the Universe. These shortcomings argue for physics beyond the standard model; some possibilities are recalled.The Large Hadron Collider moves experiments squarely into the TeV scale, where answers to important outstanding questions will be found. The questions are developed in the course of this review, and a short summary is attempted of how knowledge might accumulate.

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Section: Dynamical Symmetry Breakingmentioning

confidence: 99%

Unanswered Questions in the Electroweak Theory

Quigg

2009

Annu. Rev. Nucl. Part. Sci.

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“…Extreme fine tuning is required to keep the Higgs mass to be within the electroweak scale. Third, the mechanism also fails to provide a satisfactory explanation for the broad ratios of scales in the masses of Standard Model fermions [8]. An attractive alternative is a dynamical approach to the electroweak symmetry breaking.…”

Section: A Note On Technicolormentioning

confidence: 99%

Confinement Models at Finite Temperature and Density

Lo¹,

Swanson²,

Credé³

et al. 2010

AIP Conference Proceedings

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This work presents a non-perturbative study of dynamical chiral symmetry breaking in various confinement models at finite temperature and density. The tool of choice is the Schwinger-Dyson equations. We shall discuss (i) the inadequacy of static confinement models in explaining thermal properties of QCD (ii) dynamical chiral and parity symmetry breaking of three dimensional QED with two-component fermions (iii) endemic infrared divergences in QED3 at finite temperature and the attempt to solve the system self-consistently.

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Standard Model of Elementary Particles

Gouttenoire

2022

Beyond the Standard Model Cocktail

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Some Recent Results on Models of Dynamical Electroweak Symmetry Breaking

Abstract: We review some recent results on models of dynamical electroweak symmetry breaking involving extended technicolor.

Cited by 3 publications

References 25 publications

Unanswered Questions in the Electroweak Theory

Unanswered Questions in the Electroweak Theory

Confinement Models at Finite Temperature and Density

Standard Model of Elementary Particles

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