Minimal SU(5) Resuscitated by Higgs Coupling Fixed Points

Details Minimal SU(5) Resuscitated by Higgs Coupling Fixed Points Minimal SU(5) Resuscitated by Higgs Coupling Fixed Points

1997-10-09

arxiv.org/abs/hep-ph/9710297v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, RevTex, 1 ps Figure (missing figure now included)

Scientific paper

The issue of gauge unification in the (non-supersymmetric) Standard Model is reinvestigated. It is found that with just an additional fourth generation of quarks and leptons, $SU(3) \otimes SU(2) \otimes U(1)$ gauge couplings converge to a common point $\sim 2.65 \times 10^{15}$ GeV ($\tau_p \sim 10^{34 \pm 1}$ years) provided the Higgs boson has a mass of at least 210 GeV. The presence of ultraviolet fixed points for the Yukawa and Higgs quartic couplings is found to be the origin of such unification.

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