Year: 1996
Type: article
Abstract: The Standard Model of electroweak interactions is shown to include a gauge theory for the observed scalar and pseudoscalar mesons. This is done by exploiting the consequences of embedding the SU(2)L×U(1) group into the chiral group of strong interactions and by explicitly considering as composite the Higgs boson and its three companions inside the standard scalar four-plet. No extra scale of interaction is needed. Quantizing by the Feynman path integral reveals how, in the “Nambu-Jona-Lasinio approximation,” the quarks and the Higgs boson become unobservable, and the theory anomaly-free. Nevertheless, the “anomalous” couplings of the pseudoscalar mesons to gauge fields spring again from the constraints associated with their compositeness itself. This work is the complement of Ref. 1, where the leptonic sector was shown to be compatible with a purely vectorial theory and, consequently, to be also anomaly-free. The bond between quarks and leptons loosens.
Author: B. MACHET
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1969940643