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Higgs and top mass predictions in GUT models with fixed-point solutions

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Il Nuovo Cimento A (1971-1996)

Summary

We study fixed-point solutions inSU(5) andSO(10) super-symmetric grand unified models. For theSU(5) model with a single largeh t coupling constant we find 155GeV≤m t≤200 GeV. For 155GeV≤m t≤175GeV we find that the Higgs boson is lighter thanM Z. TheSU(5) andSU(10) fixed-point solutions with largeh t andh b coupling constants give a top-quark massm h=180–190 GeV and a Higgs boson massm h=118–120 GeV (forM SUSY=1 TeV). From the requirement of the absence of a Landau pole singularity up to the Planck scale we find an upper bound on the top massm t≤209 GeV in theSU(5) model andm t≤193 GeV for theSO(10) model.

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Author notes

  1. N. Krasnikov

    Present address: Institute for Nuclear Research, Russian Academy of Sciences, 117312, Moscow, Russia

Authors and Affiliations

  1. III. Physikalisches Institut Abteilung für Theoretische Elementarteilchenphysik, RWTH Aachen, Physikzentrum, 52056, Aachen, Germany

    N. Krasnikov, G. Kreyerhoff & R. Rodenberg

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  1. N. Krasnikov
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  2. G. Kreyerhoff
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  3. R. Rodenberg
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Krasnikov, N., Kreyerhoff, G. & Rodenberg, R. Higgs and top mass predictions in GUT models with fixed-point solutions. Nuov Cim A 108, 565–576 (1995). https://doi.org/10.1007/BF02816852

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  • DOI: https://doi.org/10.1007/BF02816852

PACS 12.90

PACS 12.15.Cc

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