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We study extensions of the Standard Model with general new vector bosons. The full Standard Model gauge symmetry is used to classify the extra vectors and constrain their couplings. We derive the corresponding effective Lagrangian, valid at…

高能物理 - 唯象学 · 物理学 2025-02-05 F. del Aguila , J. de Blas , M. Perez-Victoria

The complex singlet extension CxSM of the Standard Model (SM) is a simple extension of the SM with two visible Higgs bosons in the spectrum and a Dark Matter (DM) candidate. In this paper we complete the computation of the next-to-leading…

高能物理 - 唯象学 · 物理学 2023-06-08 Felix Egle , Margarete Mühlleitner , Rui Santos , João Viana

We study axion-like particle contributions to the Higgs boson decays. The particle is assumed to couple with the standard model electroweak gauge bosons. Although direct productions of axion-like particles have often been discussed, we…

高能物理 - 唯象学 · 物理学 2023-08-31 Masashi Aiko , Motoi Endo

The period 1989-2000 provided a huge yield of precise electroweak data from the LEP and SLC experiments. Many analyses of these data are now complete, but others, particularly of the full LEP-2 data samples, continue. The main electroweak…

高能物理 - 实验 · 物理学 2014-11-17 D. G. Charlton

We compute the complete supersymmetric next-to-leading order corrections to the production of a light Higgs boson in weak boson fusion. The size of the electroweak corrections is of similar order as the next-to-leading order corrections in…

高能物理 - 唯象学 · 物理学 2009-04-08 W. Hollik , T. Plehn , M. Rauch , H. Rzehak

We consider an extension of the standard electroweak theory with gauge group $SU(2)_L \times SU(2)_R \times U(1)_{\tilde{Y}}$, where the gauge bosons of the extra $SU(2)_R$ factor do not couple to ordinary fermions. We show that precision…

高能物理 - 唯象学 · 物理学 2009-10-30 A. Donini , F. Feruglio , J. Matias , F. Zwirner

The status of precision electroweak measurements as of summer 2002 is reviewed. The recent results on the anomalous magnetic moment of the muon and on neutrino-nucleon scattering are discussed. Precision results on the electroweak…

高能物理 - 实验 · 物理学 2015-06-25 Martin W. Grunewald

We propose a model to describe the low energy physics of partially composite Standard Model, in which the electroweak sector in the Standard Model is weakly coupled to some strong dynamics. The vector resonances in the strong sector are…

高能物理 - 唯象学 · 物理学 2013-08-09 Tomohiro Abe , Ryuichiro Kitano

We review the realization of the Brout-Englert-Higgs mechanism in the electroweak theory and describe the experimental and theoretical constraints on the mass of the single Higgs boson expected in the minimal Standard Model. We also discuss…

高能物理 - 唯象学 · 物理学 2009-09-11 John Ellis , Giovanni Ridolfi , Fabio Zwirner

In these proceedings, I review recent precision calculations relevant for the LHC, all related to the electroweak, Higgs or top sector of the Standard Model. These applications range from triboson production to the production of a…

高能物理 - 唯象学 · 物理学 2024-07-31 Mathieu Pellen

Radiative corrections are studied within an extension of the standard model, containing extra singlet scalars. The calculations determine the effect of a large width of the Higgs boson on radiative corrections. They throw some light on the…

高能物理 - 唯象学 · 物理学 2009-11-07 J. J. van der Bij

We look at a number of simple, but representative, models of extended electroweak gauge structures, and present the general contributions to a_muon from the heavy Z' and W' electroweak gauge bosons. Of the models we have examined, none can…

高能物理 - 唯象学 · 物理学 2009-11-07 Kevin R. Lynch

The main attractions of studying the bosonic sector of the electroweak standard model and its extensions at a future high energy photon collider are reviewed. A presentation of the laser scheme for obtaining such a collider is given where…

高能物理 - 唯象学 · 物理学 2008-02-03 M. Baillargeon , G. Belanger , F. Boudjema

The role of the top quark in the Standard Model predictions for electroweak precision observables is reviewed and the implications of the experimental data for the indirect determination of the top mass range is discussed.

高能物理 - 唯象学 · 物理学 2009-09-25 Wolfgang Hollik

We review the empirical evidence for the validity of the Standard Electroweak Theory in Nature. The experimental data are interpreted in terms of an effective Lagrangian for Z physics, allowing for potential sources of SU(2) violation and…

高能物理 - 唯象学 · 物理学 2007-05-23 D. Schildknecht

We summarize current constraints on the couplings of the Higgs boson in the framework of an effective theory beyond the Standard Model.

高能物理 - 唯象学 · 物理学 2013-11-06 Hermes Belusca-Maito , Adam Falkowski

We compute corrections to precision electroweak observables in supersymmetry in the limit that scalar superpartners are very massive and decoupled. This leaves charginos and neutralinos and a Standard Model-like Higgs boson as the only…

高能物理 - 唯象学 · 物理学 2009-11-10 Stephen P. Martin , Kazuhiro Tobe , James D. Wells

We examine the nature of electroweak Baryogenesis when the Higgs boson's properties are modified by the effects of new physics. We utilize the effective potential to one loop (ring improving the finite temperature perturbative expansion)…

高能物理 - 唯象学 · 物理学 2009-02-25 Benjamin Grinstein , Michael Trott

An introduction to the physics of electroweak symmetry breaking is given. We discuss Higgs boson production in $e^+e^-$ and hadronic collisions and survey search techniques at present and future accelerators. Indirect limits on the Higgs…

高能物理 - 唯象学 · 物理学 2007-05-23 S. Dawson

This lecture discusses the Higgs boson sectors of the SM and the MSSM, in particular in view of the recently discovered particle at \sim 125.5 GeV. It also covers their connection to electroweak precision physics and the implications for…

高能物理 - 唯象学 · 物理学 2013-01-31 S. Heinemeyer