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An electroweak model of SU(3) $\times$ U(1) gauge group is studied. {}From the group theoretical constraint, the symmetry breaking of this model to the standard model occurs at 1.7~TeV or lower. Hence the mass of the new neutral gauge boson…

High Energy Physics - Phenomenology · Physics 2011-07-19 Daniel Ng

We calculate the gauge couplings in the dual standard model. These values are consistent with an associated GeV mass scale, and predict the weak mixing angle to be ${\sin^2 \theta_w} (M_Z) \sim 0.22$.

High Energy Physics - Phenomenology · Physics 2009-10-31 Nathan F. Lepora

The NuTeV Collaboration has measured the electroweak parameters sin^2 theta_W and rho in neutrino-nucleon deep-inelastic scattering using a sign-selected beam. The nearly pure neutrino or antineutrino beams that result provide many of the…

High Energy Physics - Experiment · Physics 2009-11-07 R. H. Bernstein

The numerical input for the quantitative consequences of the electroweak standard model, the hypercharge and isospin coupling constants and the Higgs field ground state mass value, are interpreted as normalizations of the symmetries…

High Energy Physics - Theory · Physics 2007-05-23 Heinrich Saller

In this note we display an observation about the geometrical properties of the gauge group manifold of the standard electroweak theory, and the values of the gauge coupling constants. Heuristically obtained stucture relates the value…

High Energy Physics - Theory · Physics 2007-05-23 Amir Mulic

We assume that strong and electroweak interactions become strong at very high energies. With this assumption, we compute the low-energy gauge coupling constants $\alpha_i (m_Z)$ as a function of the cutoff scale, taking the supersymmetric…

High Energy Physics - Phenomenology · Physics 2009-09-29 T. Moroi , Hitoshi Murayama , T. Yanagida

The noncommutative generalisation of the standard electroweak model due to Balakrishna, Gursey and Wali is formulated in terms of the derivations Der_2(M_3) of a three dimensional representation of the su(2) Lie algebra of weak isospin. A…

High Energy Physics - Theory · Physics 2009-11-07 A. Catal-Ozer , T. Dereli

In the standard model with two Higgs doublets it is shown that the existence of the electroweak Z-string in general requires the same characteristic length for the two Higgs fields as well as a specific ratio of the two Higgs vacuum…

High Energy Physics - Phenomenology · Physics 2007-05-23 HoSeong La

By representing the electroweak gauge symmetry group $SU(2) \times U(1)$ by a hypertorus $S_2 \times S_1$, the electroweak mixing angle and the fine structure constant are predicted. By representing neutrinos as oscillating spheroid…

General Physics · Physics 2022-01-02 Steven C. Strausz

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

This set of lectures provides an elementary introduction to the standard electroweak theory, followed by a detailed discussion of its experimental tests. We then consider the conceptual limitations of the Standard Model and briefly review…

High Energy Physics - Phenomenology · Physics 2007-05-23 Guido Altarelli

We consider an extension of the Standard Model that was proposed recently by one of the current authors (PQH), which admits magnetic monopoles with a mass of order of a few TeV. We impose, in addition to topological quantization in the…

High Energy Physics - Phenomenology · Physics 2021-07-14 John Ellis , P. Q. Hung , Nick Mavromatos

The electroweak sphaleron rate in the high temperature phase of the Standard Model is inversely proportional to the weak-isospin conductivity. So far, only electroweak interactions were included in its computation. Here we take into account…

High Energy Physics - Phenomenology · Physics 2026-03-20 Dietrich Bödeker , Philipp Klose

The Electroweak model will be geometrized in a 5-D Riemann-Cartan framework: U(1) weak hyper-charge group will be worked out in a Klauza-Klein scheme, while SU(2) weak isospin group will be identified to suitable bein projections of the…

General Relativity and Quantum Cosmology · Physics 2016-11-15 Orchidea Maria Lecian , Giovanni Montani

The structure of the electroweak theory is suggested by classical geometrical ideas. A nonlinear map is constructed, from a 12-dimensional linear space of three Weyl spinors onto the 12-dimensional tangent bundle of the Stiefel manifold of…

High Energy Physics - Theory · Physics 2007-05-23 Peter Morgan

We present a model based on a SU(2) confining theory which is dual to the standard model. This duality allows to calculate the electroweak mixing angle and the Higgs boson mass. Possible tests of this duality are discussed.

High Energy Physics - Phenomenology · Physics 2007-05-23 X. Calmet

Results on W-pair productions at LEP2 are reviewed and their consistency with standard electroweak expectations is summarised. Special interest is given to measurements of W polarisation, and to new studies of spin and decay-plane…

High Energy Physics - Experiment · Physics 2007-05-23 P. Azzurri

We study polarized $e^-e^-$ scattering into $\WW$, $\WZ$ and $\ZZ$ final states within the framework of the standard model of electroweak interactions. These mechanisms for producing pairs of weak gauge bosons are potential backgrounds to…

High Energy Physics - Phenomenology · Physics 2009-10-28 Frank Cuypers , Karol Kolodziej , Reinhold Rueckl

Quantum weakdynamics (QWD) as an SU(3)_I gauge theory with the Theta vacuum term is considered to be the unification of the electroweak interaction as an SU(2)_L x U(1)_Y gauge theory. The grand unification of SU(3)_I x SU(3)_C beyond the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Heui-Seol Roh

From a distance, the proton's weak charge is seen through the distorting effects of clouds of virtual particles. The effective weak charge can be calculated by starting with the measured weak coupling at the Z-pole and "running" the…

High Energy Physics - Phenomenology · Physics 2019-08-14 W. D. Ramsay