Probing the grand-unification-scale mass spectrum through precision measurements on the weak-scale parameters

We study the renormalization-group evolution of gauge coupling constants including mass threshold effects of both light and heavy particles, in the minimal supersymmetric SU(5) grand unified model assuming supersymmetry breaking at {approx lt}1 TeV. We show that a certain combination of superheavy m...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 1992-08, Vol.69 (7), p.1014-1017
Main Authors: HISANO, J, MURAYAMA, H, YANAGIDA, T
Format: Article
Language:English
Subjects:
662210 - Specific Theories & Interaction Models
Classical and quantum physics: mechanics and fields
COUPLING CONSTANTS
ELEMENTARY PARTICLES
ENERGY RANGE
Exact sciences and technology
FIELD THEORIES
GRAND UNIFIED THEORY
HIGGS BOSONS
LIE GROUPS
LIMITING VALUES
MASS
MASS SPECTRA
MATHEMATICAL MODELS
Pa
PARTICLE MODELS
Particle Systematics- Unified Theories & Models- (1992-)
Physics
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
POSTULATED PARTICLES
SPECTRA
STANDARD MODEL
SU GROUPS
SU-5 GROUPS
SYMMETRY GROUPS
TEV RANGE
TEV RANGE 01-10
Theory of quantized fields
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We study the renormalization-group evolution of gauge coupling constants including mass threshold effects of both light and heavy particles, in the minimal supersymmetric SU(5) grand unified model assuming supersymmetry breaking at {approx lt}1 TeV. We show that a certain combination of superheavy masses {ital M}{sub {ital V}}{sup 2}{ital M}{sub {Sigma}} is tightly constrained, while the mass of the color-triplet Higgs boson, {ital M}{sub {ital H}}, can vary from 2{times}10{sup 13} to 2{times}10{sup 17} GeV. With a relatively heavy color-triplet mass ({ital M}{sub {ital H}}{similar to}10{sup 17} GeV), the present nucleon-decay experiments still allow superparticles below 1 TeV. The importance of a precise measurement on {alpha}{sub 3} is stressed.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.69.1014