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The minimal Standard Model exhibits a nontrivial chiral U(2) symmetry if the vev and the hypercharge splitting (Delta) of right-handed leptons (quarks) in a family vanish and Q=T_0 + Y independently in each helicity sector. As a…

高能物理 - 理论 · 物理学 2009-10-28 R. Bonisch

Under the assumption of classical conformal invariance, we study the Coleman-Weinberg symmetry breaking mechanism in the minimal left-right symmetric model. This model is attractive as it provides a natural framework for small neutrino…

高能物理 - 唯象学 · 物理学 2010-09-15 Martin Holthausen , Manfred Lindner , Michael A. Schmidt

We examine the Standard Model under the electroweak symmetry group $U_{EW}(2)$ subject to the Lie algebra condition $\mathfrak{u}_{EW}(2)\not\cong \mathfrak{su}_{I}(2)\oplus \mathfrak{u}_{Y}(1)$. Physically, the condition ensures that all…

综合物理 · 物理学 2025-03-05 J. LaChapelle

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…

高能物理 - 唯象学 · 物理学 2009-10-30 R. Casalbuoni , S. De Curtis , D. Dominici , M. Grazzini

We describe a lattice simulation of the masses and decay constants of the lowest-lying vector and axial resonances, and the electroweak S parameter, in an SU(3) gauge theory with $N_f = 2$ and 6 fermions in the fundamental representation.…

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…

高能物理 - 唯象学 · 物理学 2015-09-08 Naoyuki Haba , Hiroyuki Ishida , Nobuchika Okada , Yuya Yamaguchi

K -> Pi Pi decays are investigated in the framework of the SU(2)left x U(1) gauge theory of J=0 mesons proposed in ref.[1], to which is added an interaction between mesons respecting the two symmetries generally attributed to strong…

高能物理 - 唯象学 · 物理学 2009-10-31 B. Machet

We propose here - for the first time in the literature, to our best knowledge - an electroweak unification based on the $SU(5)_{L}\times U(1)_{Y}$ gauge group. The spontaneous symmetry breaking takes place in the manner $SU(5)_{L}\times…

高能物理 - 唯象学 · 物理学 2021-11-01 Adrian Palcu

In the Standard Model, the electroweak symmetry is broken by a complex, $SU(2)$-doublet Higgs field and the vacuum manifold $SU(2)\times U(1)/U(1)$ has the topology of a 3-sphere. We remark that there exist theoretical alternatives that are…

高能物理 - 理论 · 物理学 2017-01-31 Ben Gripaios , Oscar Randal-Williams

We introduce a physical scalar sector in a SU(2)xU(1) electroweak theory in which the gauge group is realized non linearly. By invoking theoretical as well as experimental constraints, we build a phenomenologically viable model in which a…

高能物理 - 唯象学 · 物理学 2015-06-11 D. Binosi , A. Quadri

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),…

高能物理 - 唯象学 · 物理学 2010-02-21 Daniele Bettinelli , Ruggero Ferrari , Andrea Quadri

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…

高能物理 - 唯象学 · 物理学 2014-01-16 Martin Holthausen , Jisuke Kubo , Kher Sham Lim , Manfred Lindner

When the fundamental invariant of $SLq(2)$ is expressed as $\epsilon_q = (\matrix{0 & \alpha_2 \cr -\alpha_1 & 0})$, then the deformation parameter, $q$, defining the knot algebra is $q = \frac{\alpha_1}{\alpha_2}$. We consider models in…

高能物理 - 理论 · 物理学 2011-08-03 Robert J. Finkelstein

We investigate a radiative electroweak gauge symmetry breaking scenario via the Coleman-Weinberg mechanism starting from a completely flat Higgs potential at the Planck scale ("flatland scenario"). In our previous paper, we showed that the…

高能物理 - 唯象学 · 物理学 2014-03-26 Michio Hashimoto , Satoshi Iso , Yuta Orikasa

Electroweak symmetry can be naturally broken by observed quark and gauge fields in various extra-dimensional configurations. No new {\it fundamental} fields are required below the quantum gravitational scale ($\sim$ 10 - 100 TeV). We…

高能物理 - 唯象学 · 物理学 2009-10-31 Hsin-Chia Cheng , Bogdan A. Dobrescu , Christopher T. Hill

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…

高能物理 - 唯象学 · 物理学 2011-01-13 V. H. Nguyen , X. Y. Pham

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…

高能物理 - 唯象学 · 物理学 2021-08-11 Henry Diaz , E. Castillo-Ruiz , O. P. Ravinez , V. Pleitez

After some general remarks about SU_L(4) electroweak unification, the model is extended to SU_L(4)xU_X(1) to accomodate fractionally charged quarks. The unification scale is expected to be in TeV region. A right-handed Majorana neutrino…

高能物理 - 唯象学 · 物理学 2008-11-26 Fayyazuddin , Riazuddin

I study the scalar representations of the electroweak group of the Standard Model, with a special emphasis on their chiral properties and on their behaviour by the discrete symmetries P and CP. A gauge theory for J=0 mesons naturally…

高能物理 - 唯象学 · 物理学 2007-05-23 B. Machet

We consider the minimal version of an extension of the standard electroweak model based on the $SU(3)_c \times SU(3)_L \times U(1)_X$ gauge symmetry (the 3-3-1 model). We analyze the most general potential constructed from three scalars in…

高能物理 - 唯象学 · 物理学 2016-06-29 J. Sá Borges , Rudnei O. Ramos
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