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A Higgs-Like Scalar With Mixed-Parity and Standard-Model-Like Couplings Could be Further Evidence for Underlying Massless SU(5) Unification

2013/01/23 by Alan R. White, White, Alan R. · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.1301.5628

arxiv created 2013/01/23 · openalex publication_date 2013/01/23 · arxiv updated 2013/01/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The bound-state S-Matrix of QUD (SU(5) gauge theory with massless left-handed 5 + 15 + 40 + 45* fermions) might underly the success of the Standard Model. The dynamical role of the QUD top quark leads to two Higgs-like scalar resonances, the eta6 - which reproduces Standard Model top events, and the eta3 - which could have a mass ~ 125 GeV. The participation of the weak interaction in the dynamics implies the resonances are not parity eigenstates and so should have pseudoscalar and scalar electroweak couplings. Also, a tree-unitarity condition could hold - in part because of the closeness of the electroweak physical amplitudes to perturbation theory, and - in part because of the intimate relation with regge behavior. This would imply that the combined physical couplings of the two resonances are comparable to those of the Standard Model Higgs boson. Unlike the isolated Standard Model, the underlying unification of QUD implies there will be no LHC "nightmare scenario" and that, instead, a broad, extensive, experimental program should, eventually, be implemented.

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