Don’t stop thinking about leptoquarks: Constructing new models | Zendy

JoAnne L. Hewett | Zendy; Thomas G. Rizzo | Zendy

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Don’t stop thinking about leptoquarks: Constructing new models

Author(s) -

JoAnne L. Hewett,

Thomas G. Rizzo

Publication year - 1998

Publication title -

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Language(s) - English

Resource type - Journals

eISSN - 1089-4918

pISSN - 0556-2821

DOI - 10.1103/physrevd.58.055005

Subject(s) - physics , leptoquark , particle physics , supersymmetry , fermion , symmetry breaking , hera , standard model (mathematical formulation) , physics beyond the standard model , scalar (mathematics) , collider , theoretical physics , lepton , nuclear physics , quantum chromodynamics , mathematics , geometry , archaeology , gauge (firearms) , history , electron

We discuss the general framework for the construction of new modelscontaining a single, fermion number zero scalar leptoquark of mass $\simeq200-220$ GeV which can both satisfy the D0/CDF search constraints as well aslow energy data, and can lead to both neutral and charged current-like finalstates at HERA. The class of models of this kind necessarily contain newvector-like fermions with masses at the TeV scale which mix with those of theStandard Model after symmetry breaking. In this paper we classify all models ofthis type and examine their phenomenological implications as well as theirpotential embedding into SUSY and non-SUSY GUT scenarios. The general couplingparameter space allowed by low energy as well as collider data for these modelsis described and requires no fine-tuning of the parameters.Comment: Modified text, added table, and updated reference

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