Quark and lepton masses from top loops

Details Quark and lepton masses from top loops Quark and lepton masses from top loops

2008-05-07

arxiv.org/abs/0805.0822v2

JHEP 0808:100,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

29 pages; Introduction expanded, references added

Scientific paper

10.1088/1126-6708/2008/08/100

Assuming that the leptons and quarks other than top are massless at tree level, we show that their masses may be induced by loops involving the top quark. As a result, the generic features of the fermion mass spectrum arise from combinations of loop factors. Explicitly, we construct a renormalizable model involving a few new particles, which leads to 1-loop bottom and tau masses, a 2-loop charm mass, 3-loop muon and strange masses, and 4-loop masses for first generation fermions. This realistic pattern of masses does not require any symmetry to differentiate the three generations of fermions. The new particles may produce observable effects in future experiments searching for mu to e conversion in nuclei, rare meson decays, and other processes.

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