A phenomenological comparison of conventional and supersymmetric guts

John Ellis, D. V. Nanopoulos, Serge Rudaz

Research output: Contribution to journalArticlepeer-review

280 Scopus citations


We compare the phenomenological predictions of grand unified theories (GUTs) and supersymmetric (susy) GUTs for nucleon decays, sin2θW and mb/mτ. Conventional GUTs are consistent with experiment for all three of these observables. In contrast with previous analyses, we find that susy GUTs have problems with sin2θW, but not with mb/mτ or the experimental lower limit on the nucleon lifetime. Susy GUTs may cause nucleon decays with an observable lifetime: in the simplest SU(5) susy GUT we find Γ(N→ντK) ≫ Γ(N→νμK) ≫ Γ(N→νπ, μ+K) ≫ Γ(N→μ+π) ≫ Γ(N→e+K) ≫ Γ(N→e+π).

Original languageEnglish (US)
Pages (from-to)43-62
Number of pages20
JournalNuclear Physics, Section B
Issue number1
StatePublished - Jul 12 1982


Dive into the research topics of 'A phenomenological comparison of conventional and supersymmetric guts'. Together they form a unique fingerprint.

Cite this