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A linear realization of a model of dynamical electroweak symmetry breaking describing additional heavy vector bosons is proposed. The model is a SU(2)_L x U(1) x SU(2)_L' x SU(2)_R' gauge theory, breaking at some high scale u to SU(2)_weak…

High Energy Physics - Phenomenology · Physics 2009-10-30 R. Casalbuoni , S. De Curtis , D. Dominici , M. Grazzini

The presently observed cosmological baryon asymmetry has been finally determined at the time of the electroweak phase transition, when baryon and lepton number violating interactions fell out of thermal equilibrium. We discuss the…

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

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…

High Energy Physics - Phenomenology · Physics 2007-05-23 Dieter Schildknecht

The Very Special Relativity Electroweak Standard Model (VSR EW SM) is a theory with $SU(2)_L \times U(1)_R$ symmetry, with the same number of leptons and gauge fields as in the usual Weinberg-Salam (WS) model. No new particles are…

High Energy Physics - Phenomenology · Physics 2015-06-11 Jorge Alfaro , Pablo González , Ricardo Ávila

A generalized theory of electroweak interaction is developed based on the underlying geometrical structure of the tangent bundle with symmetries arising from transformations of tangent vectors along the fiber axis at a fixed space-time…

High Energy Physics - Phenomenology · Physics 2019-11-27 Joachim Herrmann

We consider extension of the standard model $SU(2)_l \times SU(2)_h \times U(1)$ where the first two families of quarks and leptons transform according to the $SU(2)_l$ group and the third family according to the $SU(2)_h$ group. In this…

High Energy Physics - Phenomenology · Physics 2010-04-06 Cheng-Wei Chiang , N. G. Deshpande , Xiao-Gang He , J. Jiang

We consider the generation of fermion masses in an emergent model of electroweak symmetry breaking with composite $W,Z$ gauge bosons. A universal bulk fermion profile in a warped extra dimension is used for all fermion flavors. Electroweak…

High Energy Physics - Phenomenology · Physics 2011-01-04 Yanou Cui , Tony Gherghetta , James Stokes

We study the impact of LEP2 constraints on the dimensionless coefficients of the electroweak chiral Lagrangian on the precision observables using the improved renormalization group equations. We find that the current uncertainty in the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Sukanta Dutta , Kaoru Hagiwara , Qi-Shu Yan

We suggest the so-called bosonic seesaw mechanism in the context of a classically conformal $U(1)_{B-L}$ extension of the Standard Model with two Higgs doublet fields. The $U(1)_{B-L}$ symmetry is radiatively broken via the Coleman-Weinberg…

High Energy Physics - Phenomenology · Physics 2015-09-08 Naoyuki Haba , Hiroyuki Ishida , Nobuchika Okada , Yuya Yamaguchi

We discuss the possibility of breaking the electroweak symmetry in theories with extra dimensions via boundary conditions, without a physical Higgs scalar in the spectrum. In these models the unitarity violation scale can be delayed via the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Csaba Csaki

The Lee-Wick (LW) formulation of higher-derivative theories can be extended from one in which the extra degrees of freedom are represented as a single heavy, negative-norm partner for each known particle (N=2), to one in which a second,…

High Energy Physics - Phenomenology · Physics 2013-05-30 Richard F. Lebed , Russell H. TerBeek

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 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…

High Energy Physics - Phenomenology · Physics 2007-05-23 D. Schildknecht

Building on earlier work, we propose an elementary Lagrangian for the unification of the standard model with pre-gravitation, assumed to have an unbroken $E_8 \times E_8$ symmetry. The Lagrangian is patterned after the kinetic energy of a…

High Energy Physics - Phenomenology · Physics 2022-08-24 Sherry Raj , Tejinder P. Singh

We discuss the electroweak gauge symmetry breaking triggered by a new strong attractive interaction to condensate fermion-antifermion, and topcolor is a prototype. To deal with the fermion pairing, a general method based on the…

High Energy Physics - Phenomenology · Physics 2011-01-13 V. H. Nguyen , X. Y. Pham

The $U_L(2)\bigotimes U_R(2) $ gauge model for the unified theory of the electromagnetic and weak interactions which is free from a prior self-interaction scalar field, is developed. Due to breaking the initial symmetry the…

High Energy Physics - Phenomenology · Physics 2015-06-04 A. V. Koshelkin

A model for electroweak unification of quarks and leptons, in a gauge group $SU_{C}(3)\times SU(4)\times U_{X}(1)$ is constructed. The model requires, three generations of quarks and leptons which are replicas (mirror) of the standard…

High Energy Physics - Phenomenology · Physics 2015-06-03 Fayyazuddin

Here we propose models with $SU(2)_L\otimes SU(2)_R\otimes U(1)_{B-L}$ electroweak gauge symmetry in which parity (or charge conjugation) is broken explicitly and the interactions of left- and right-handed fermions are completely different…

High Energy Physics - Phenomenology · Physics 2021-08-11 Henry Diaz , E. Castillo-Ruiz , O. P. Ravinez , V. Pleitez

We describe an alternate gauge electroweak model that permits neutrinos with mass, and at the same time explains why right-handed neutrinos do not appear in weak interactions. This is a local gauge theory involving a space [V ] of three…

General Physics · Physics 2010-12-07 Bill Dalton

The electroweak model is formulated on the nonlinearly realized gauge group SU(2) X U(1). This implies that in perturbation theory no Higgs field is present. The paper provides the effective action at the tree level, the Slavnov Taylor…

High Energy Physics - Phenomenology · Physics 2010-11-22 Daniele Bettinelli , Ruggero Ferrari , Andrea Quadri