A Vector-Like Extension of the Standard Model

1994/12/01 by K. Fujikawa · 2 citations
Physics and Astronomy · Social Sciences · #International Science and Diplomacy #Neutrino Physics Research #Particle physics theoretical and experimental studies

paper · doi:10.1143/ptp/92.6.1149

crossref issued 1994/12/01 · crossref published 1994/12/01 · crossref published-print 1994/12/01 · openalex publication_date 1994/12/01 · crossref created 2013/08/19 · openalex created_date 2016/06/24 · crossref deposited 2017/08/24 · crossref indexed 2026/07/31 · openalex updated_date 2026/07/31

Abstract

A vector-like extension of the standard model for heavier quarks and leptons with SU(2) ×U(1) gauge symmetry and only one Higgs doublet is examined. This scheme incorporates infinitely many fermions and avoids the appearance of a strongly interacting sector. The model is perturbatively well controllable, and constraints such as b →sγ and GIM suppression in general are naturally satisfied if the on-set of heavier fermion mass scale is chosen at a few TeV. In this scheme, the physical Higgs particle generally mediates leptonic as well as quark flavor-changing processes at a rate below the present experimental limit. Vector-like models, if suitably defined, provide a viable and interesting scheme for physics beyond 1 TeV.

Cited by

• Search for Beyond the Standard Model physics with anomaly detection in multilepton final states in pp collisions at √(s)=13 TeV with the ATLAS detector
• The Muon Magnetic Moment and Physics Beyond the Standard Model

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