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The LHC and other experiments show so far no sign of new physics and long-held beliefs about naturalness should be critically reexamined. We discuss therefore in this paper a model with a combined breaking of conformal and electroweak…

High Energy Physics - Phenomenology · Physics 2014-01-16 Martin Holthausen , Jisuke Kubo , Kher Sham Lim , Manfred Lindner

A consistent strategy for the subtraction of the divergences in the nonlinearly realized Electroweak Model in the loop expansion is presented. No Higgs field enters into the perturbative spectrum. The local functional equation (LFE),…

High Energy Physics - Phenomenology · Physics 2010-02-21 Daniele Bettinelli , Ruggero Ferrari , Andrea Quadri

Current particle phenomenology is characterized by the spectacular agreement of the predictions of the Standard Model of particle physics (SM) with all results from collider experiments and by the absence of significant signals of…

High Energy Physics - Phenomenology · Physics 2020-06-24 Ansgar Denner , Stefan Dittmaier

Extensions of the Standard Model often come with additional, possibly electroweakly charged Higgs states, the prototypal example being the Two-Higgs-Doublet Model. While collider phenomenology does not exclude the possibility for some of…

High Energy Physics - Phenomenology · Physics 2019-11-18 Florian Domingo , Sebastian Paßehr

We classify weak-scale extensions of the Standard Model which automatically preserve its accidental and approximate symmetry structure at the renormalizable level and which are hence invisible to low-energy indirect probes. By requiring the…

High Energy Physics - Phenomenology · Physics 2015-07-22 Luca Di Luzio , Ramona Grober , Jernej F. Kamenik , Marco Nardecchia

We investigate a model where superconducting electrons are coupled to a frequency dependent charge-density wave (CDW) order parameter Delta(w). Our approach can reconcile the simultaneous existence of low energy Bogoljubov quasiparticles…

Superconductivity · Physics 2012-05-22 G. Seibold , M. Grilli , J. Lorenzana

We extend our previous determination of the thermodynamic pressure of the Standard Model so that the result can be applied down to temperatures corresponding to the electroweak crossover. This requires a further resummation which can be…

High Energy Physics - Phenomenology · Physics 2009-11-11 A. Gynther , M. Vepsalainen

In principle, the baryon asymmetry of the Universe can be generated at the electroweak phase transition but the experimental lower limit on the Higgs mass seems to rule out a Standard Model scenario. However, it has been shown recently that…

High Energy Physics - Phenomenology · Physics 2009-02-16 D. Delepine

As is known, the Standard Model mainly ideologically and qualitatively focuss the experimenters in their search of new mass states (of EP- elementary particles). The exact quantitative prognosis of their properties, especially of masses,…

General Physics · Physics 2007-05-23 A. M. Chechelnitsky

The Higgs boson offers a unique window to hidden sector fields S_i, singlets under the Standard Model gauge group, via the renormalizable interactions |H|^2 S_i^2. We prove that such interactions can provide new patterns for electroweak…

High Energy Physics - Phenomenology · Physics 2008-11-26 Jose Ramon Espinosa , Mariano Quiros

Adding an extra singlet scalar $S$ to the Higgs sector can provide a barrier at tree level between a false vacuum with restored electroweak symmetry and the true one. This has been demonstrated to readily give a strong phase transition as…

High Energy Physics - Phenomenology · Physics 2017-06-14 James M. Cline , Kimmo Kainulainen , David Tucker-Smith

An electroweak (EW) model has been investigated (Moffat) in which the energy $E < \mu=\sqrt{\lambda}M_W$, where $\lambda$ is a gauge parameter and $M_W$ is the $W$ boson mass. For large enough $\lambda$ the scalar boson mass…

High Energy Physics - Phenomenology · Physics 2012-01-04 J. W. Moffat

We consider the possibility of electroweak baryogenesis in a simple extension of the standard model with an extra singlet complex scalar and a vector-like down quark. We show that in the present model the first-order electroweak phase…

High Energy Physics - Phenomenology · Physics 2014-11-17 G. C. Branco , D. Delepine , D. Emmanuel-Costa , R. Gonzalez Felipe

In the electroweak phase transition there arises the problem of baryon number washout by sphaleron transitions, which can be avoided if the phase transition is strongly enough first order. The phase transition in the Standard Model or in…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. T. Davies , C. D. Froggatt , G. Jenkins , R. G. Moorhouse

Electroweak theory joins electromagnetism with the weak force in a single quantum field theory, ascribing the two fundamental interactions--so different in their manifestations--to a common symmetry principle. How the electroweak gauge…

High Energy Physics - Phenomenology · Physics 2008-11-26 Chris Quigg

1. Introduction, 2. Gauge Theories, 3. The Standard Model of Electroweak Interactions, 4. The Higgs Mechanism, 5. The CKM Matrix, 6. Renormalisation and Higher Order Corrections, 7. Why we do Believe in the Standard Model: Precision Tests,…

High Energy Physics - Phenomenology · Physics 2007-05-23 G. Altarelli

Discovering the dynamics responsible for electroweak symmetry breaking is the outstanding question facing particle physics today, and the answer will be found in the next decade. In these lectures I discuss the range of models which have…

High Energy Physics - Phenomenology · Physics 2007-05-23 R. Sekhar Chivukula

In these lectures we give a discussion of the structure of the electroweak standard model and its quantum corrections for tests of the electroweak theory. The predictions for the vector boson masses, neutrino scattering cross sections and…

High Energy Physics - Phenomenology · Physics 2007-05-23 W. Hollik

Electromagnetic topological insulators have been explored extensively due to the robust edge states they support. In this work, we propose a topological electromagnetic system based on a line defect in topologically nontrivial photonic…

Optics · Physics 2019-08-27 Menglin L. N. Chen , Li Jun Jiang , Zhihao Lan , Wei E. I. Sha

We study several aspects of electroweak vacuum metastability when an extra gauge singlet scalar, a viable candidate for a dark matter particle, is added to the standard model of particle physics, which is assumed to be valid up to the…

High Energy Physics - Phenomenology · Physics 2014-12-24 Najimuddin Khan , Subhendu Rakshit
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