Testing the mechanism of lepton compositness

4 Nov 2020  ·  Vincenzo Afferrante, Axel Maas, René Sondenheimer, Pascal Törek ·

Strict gauge invariance requires that physical left-handed leptons are actually bound states of the elementary left-handed lepton doublet and the Higgs field within the standard model. That they nonetheless behave almost like pure elementary particles is explained by the Fr\"ohlich-Morchio-Strocchi mechanism... Using lattice gauge theory, we test and confirm this mechanism for fermions. Though, due to the current inaccessibility of non-Abelian gauged Weyl fermions on the lattice, a model which contains vectorial leptons but which obeys all other relevant symmetries has been simulated. read more

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High Energy Physics - Lattice High Energy Physics - Phenomenology