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We investigate the constraints on four-Fermi contact interactions from low-energy lepton-quark and lepton-lepton scattering experiments --- polarization asymmetries in electron (muon)-nucleon scattering experiments, cesium and thallium atom…

High Energy Physics - Phenomenology · Physics 2008-11-26 Gi-Chol Cho , Kaoru Hagiwara , Seiji Matsumoto

In the standard model of electroweak interactions the Higgs doublet is replaced by a doublet of vector bosons and the gauge symmetry is broken dynamically. This generates masses for the gauge bosons and fermions, as well as it fixes the…

High Energy Physics - Phenomenology · Physics 2015-06-25 G. Cynolter , E. Lendvai , G. Pócsik

In a Kaluza-Klein space-time $V^{4}\otimes S^{3}$, we demonstrate that the dimensional reduction of spinors provides a 4-field, whose associated SU(2) gauge connections are geometrized. However, additional and gauge-violating terms arise,…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Francesco Cianfrani , Giovanni Montani

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…

High Energy Physics - Phenomenology · Physics 2009-10-30 A. Donini , F. Feruglio , J. Matias , F. Zwirner

A model of electroweak-scale right-handed neutrino (\ewnur) model was constructed five years ago in which the right-handed neutrinos are members of mirror fermion weak doublets and where the Majorana masses of the right-handed neutrinos are…

High Energy Physics - Phenomenology · Physics 2013-10-22 Vinh Hoang , Pham Q. Hung , Ajinkya Kamat

After discovery of the Higgs boson at CERN the Standard Model acquired a status of the theory of the elementary particles in the electroweak range (up to about 300 GeV). What general conclusions can be inferred from the Standard Model? It…

High Energy Physics - Phenomenology · Physics 2015-01-05 S. M. Bilenky

The standard electroweak model with Dirac neutrinos is extended by way of the principles of electroweak quark-lepton symmetry and weak topological-charge confinement to account for quark-lepton charge relations which, if not accidental, are…

High Energy Physics - Phenomenology · Physics 2008-11-26 Ernesto A. Matute

We explore a dark matter model extending the standard model particle content by one fermionic $SU(2)_L$ triplet and two fermionic $SU(2)_L$ quadruplets, leading to a minimal realistic UV-complete model of electroweakly interacting dark…

High Energy Physics - Phenomenology · Physics 2016-04-05 Tim M. P. Tait , Zhao-Huan Yu

This paper includes two main parts. In the first part, we present generalized gauge models based on SU(3)_C x SU(4)_L x U(1)_X (3-4-1) gauge group with arbitrary electric charge of leptons. The mixing matrix of neutral gauge bosons is…

High Energy Physics - Phenomenology · Physics 2016-07-13 H. N. Long , L. T. Hue , D. V. Loi

A comparative analysis of a number of phenomenological relationships between constants of the extended Standard Model of electromagnetic, strong and weak interactions of fundamental particles (hereinafter referred to as the extended…

High Energy Physics - Phenomenology · Physics 2025-08-12 V. V. Khruschov , S. V. Fomichev

In this paper, we propose a specific, nontrivial extension of the Standard Model of weak interactions based on the ${SU(2)}_L\times{U(1)}_Y\times{U(1)}_C$ group. Our motivation follows from the identification of the globally conserved…

High Energy Physics - Phenomenology · Physics 2025-02-25 Jakub Rembieliński

Some of basic problems in neutrino physics such as new energy scales, the enormous gap between neutrino masses and the lightest charged fermion mass, possible existance of sterile neutrinos in eV mass range are studied in the local gauge…

High Energy Physics - Phenomenology · Physics 2008-11-26 Riazuddin , Fayyazuddin

The q-electroweak theory suggests a description of elementary particles as solitons labelled by the irreducible representations of SU_q(2). Since knots may also be labelled by the irreducible representations of SU_q(2), we study a model of…

High Energy Physics - Theory · Physics 2011-08-22 Robert J. Finkelstein , A. C. Cadavid

The electric dipole moment of the electron is studied in detail in an extended mirror fermion model with the following unique features of (a) right-handed neutrinos are non-sterile and have masses at the electroweak scale, and (b) a…

High Energy Physics - Phenomenology · Physics 2018-03-14 Chia-Feng Chang , P. Q. Hung , Chrisna Setyo Nugroho , Van Que Tran , Tzu-Chiang Yuan

We constrain general Dirac neutrino interactions based on the Standard Model Effective Field Theory framework extended with right-handed neutrinos $N$ (SMNEFT) using deep inelastic and coherent elastic neutrino scattering, nuclear beta…

High Energy Physics - Phenomenology · Physics 2021-06-08 Tao Han , Jiajun Liao , Hongkai Liu , Danny Marfatia

The low energy effective field theory of interacting neutrinos derived from the Standard Model may be framed as a pointlike interaction and thereby modeled on a lattice of neutrino momenta. We identify a path to take a continuum limit of…

High Energy Physics - Phenomenology · Physics 2026-02-09 Michael J. Cervia

The addition of gauge singlet fermions to the Standard Model Lagrangian renders the neutrinos massive and allows one to explain all that is experimentally known about neutrino masses and lepton mixing by varying the values of the Majorana…

High Energy Physics - Phenomenology · Physics 2009-10-29 Andre de Gouvea , Wei-Chih Huang , James Jenkins

Electroweak precision tests of the Standard Model of the fundamental interactions are reviewed ranging from the lowest to the highest energy experiments. Results from global fits are presented with particular emphasis on the extraction of…

High Energy Physics - Phenomenology · Physics 2012-09-25 Jens Erler

An extension of the gauge group $SU(2)_L\otimes U(1)_Y$ of the standard model to the symmetry group $SU(4)_L\otimes U(1)_X$ (3-4-1 for short) is presented. The model does not contain exotic electric charges and anomaly cancellation is…

High Energy Physics - Phenomenology · Physics 2008-11-26 Luis A. Sanchez , Luis A. Wills-Toro , Jorge I. Zuluaga

All pieces of concrete evidence for phenomena outside the standard model (SM) - neutrino masses and dark matter - are consistent with the existence of new degrees of freedom that interact very weakly, if at all, with those in the SM. We…

High Energy Physics - Phenomenology · Physics 2017-10-18 Jeffrey M. Berryman , André de Gouvêa , Kevin J. Kelly , Yue Zhang