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We study the electroweak interactions within the standard electroweak theory in the case where the Higgs particle is heavy, namely, $M_H \leq 1\;TeV$. By integrating out the Higgs boson to one loop we find the complete effective lagrangian,…

High Energy Physics - Phenomenology · Physics 2008-02-03 M. J. Herrero , E. Ruiz Morales

We present the quantum mechanics of "partial-trace" non-linear sigma models, on the grounds of a fully symmetry-based procedure. After the general scheme is sketched, the particular example of a particle on the two-sphere is explicitly…

High Energy Physics - Theory · Physics 2010-10-28 V. Aldaya , M. Calixto , J. Guerrero , F. F. López-Ruiz

The unified compositeness of leptons, quarks and Higgs bosons is proposed as a possible scenario for New Physics beyond the Standard Model. The following topics of the scenario are briefly discussed: - Chiral gauge exceptional symmetry E_6…

High Energy Physics - Phenomenology · Physics 2011-04-15 Vasily V. Kabachenko , Yury F. Pirogov

We consider classical gauge theory on a principal bundle P->X in a case of spontaneous symmetry breaking characterized by the reduction of a structure group G of P->X to its closed subgroup H. This reduction is ensured by the existence of…

Mathematical Physics · Physics 2016-02-15 G. Sardanashvily

We construct a class of Abelian and non-Abelian local gauge theories that consist only of matter fields of fermions. The Lagrangian is compact and local without containing an auxiliary vector field nor a subsidiary condition on the matter…

High Energy Physics - Theory · Physics 2016-07-13 Mahiko Suzuki

We replace the scalar Higgs doublet with a vector Higgs boson doublet to the unified electroweak W-S model and find most of important features of W-S model are kept unchanged only the Higgs boson now become vector bosons. Lorentz invariance…

High Energy Physics - Phenomenology · Physics 2007-05-23 Xiao Yu Qian

We consider a non-Abelian dark SU(2)$_{\rm D}$ model where the dark sector couples to the Standard Model (SM) through a Higgs portal. We investigate two different scenarios of the dark sector scalars with $Z_2$ symmetry, with Higgs portal…

High Energy Physics - Phenomenology · Physics 2021-07-28 Tathagata Ghosh , Huai-Ke Guo , Tao Han , Hongkai Liu

Manifest gauge-invariance requires that observable states in the standard-model are described by composite operators, which involve additional Higgs contributions beyond perturbation theory. This field-theoretical effect has been confirmed…

High Energy Physics - Phenomenology · Physics 2020-06-17 Axel Maas , Simon Fernbach , Lukas Lechner , Simon Plätzer , Robert Schöfbeck , Pascal Törek

The suggested model permits to construct gauge-invariant expressions bringing to the masses of all the fermions, included the neutrinos. The model realizes Higgs mechanism. It is based on the presence of non-trivial ground states of a…

General Physics · Physics 2010-05-24 A. V. Serghienko

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

A Yukawa-Higgs model with Ginsparg-Wilson (GW) fermions, proposed recently by Bhattacharya, Martin and Poppitz as a possible lattice formulation of chiral gauge theories, is studied. A simple argument shows that the gauge boson always…

High Energy Physics - Lattice · Physics 2007-06-28 Hiroshi Suzuki

The Standard Model of electroweak interactions has been recast as a gauge free theory where the fields present in the Lagrangian are made inert under $SU(2)_L \times U(1)_Y$ gauge transformations. Furthermore, the residual $U(1)_{em}$ gauge…

High Energy Physics - Phenomenology · Physics 2014-09-11 Srijit Bhattacharjee

We investigate the Englert-Brout-Higgs-Guralnik-Hagen-Kibble mechanism for non-Hermitian field theories with local non-Abelian gauge symmetry in different regions of their parameter spaces. We demonstrate that the two aspects of the…

High Energy Physics - Theory · Physics 2022-08-16 Andreas Fring , Takanobu Taira

We show, in the case of a U(1)L spontaneously broken gauge theory, how introducing a composite Wess-Zumino field, with a derivative coupling to the fermionic current, and a composite scalar sector leads to infinitely massive quarks and…

High Energy Physics - Phenomenology · Physics 2008-02-03 B. Machet

We build a supersymmetric version of a recently proposed SU(3)xSU(3)xU(1)X model with heavy charged lepton and no bilepton gauge bosons.The model is an anomaly free, three generation extension of the Standard model with SU(3)L x U(1)gauge…

High Energy Physics - Phenomenology · Physics 2007-05-23 Sutapa Sen , Aparna Dixit

A dynamical symmetry breaking model of electroweak interactions is investigated based on strongly interacting fermions. Vector-like fermions of different representations of the weak SU(2) form a symmetry breaking condensate and generate the…

High Energy Physics - Phenomenology · Physics 2015-03-18 G. Cynolter , E. Lendvai

We consider classical gauge theory with spontaneous symmetry breaking on a principal bundle $P\to X$ whose structure group $G$ is reducible to a closed subgroup $H$, and sections of the quotient bundle $P/H\to X$ are treated as classical…

Mathematical Physics · Physics 2015-03-16 G. Sardanashvily , A. Kurov

We show that key results of supersymmetry can be achieved via conformal symmetry. We propose that the Higgs boson be a dynamical bound state rather than an elementary scalar, so that there is no quadratic divergence self-energy problem for…

High Energy Physics - Phenomenology · Physics 2017-06-07 Philip D. Mannheim

In this publication we present an extension of the Standard Model within the framework of Connes' noncommutative geometry [1]. The model presented here is based on a minimal spectral triple [7] which contains the Standard Model particles,…

High Energy Physics - Theory · Physics 2013-04-02 Christoph A. Stephan

Composite Higgs Models are often constructed including fermionic top partners with a mass around the TeV scale, with the top partners playing the role of stabilizing the Higgs potential and enforcing partial compositeness for the top quark.…

High Energy Physics - Phenomenology · Physics 2017-12-05 Alexander Belyaev , Giacomo Cacciapaglia , Haiying Cai , Gabriele Ferretti , Thomas Flacke , Alberto Parolini , Hugo Serodio