Abstract
We study low energy consequences of the heavy particle mass spectrum in two specific supersymmetric SU(5) models, the minimal model and the missing doublet model with natural doublet-triplet splitting. The grand unification threshold effects are found to be significant and strongly model dependent: The minimal model favors a high supersymmetry threshold (ΛSUSY>1 TeV) for αs(mZ)MS̄=0.113±0.004 (MS̄ denotes the modified minimal subtraction scheme), whereas the missing doublet model favors a low threshold (ΛSUSY<9 TeV). The X-boson-mediated proton decay lifetime can be shortened by more than one order of magnitude in both models.
| Original language | English |
|---|---|
| Pages (from-to) | 709-712 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 70 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1993 Jan 1 |
| Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)