TY - JOUR
T1 - Uncertainties in coupling constant unification
AU - Langacker, Paul
AU - Polonsky, Nir
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1993
Y1 - 1993
N2 - The status of coupling constant unification in the standard model and its supersymmetric extension are discussed. Uncertainties associated with the input coupling constants, mt, threshold corrections at the low and high scales, and possible nonrenormalizable operators are parametrized and estimated. A simple parametrization of a general supersymmetric new particle spectrum is given. It is shown that an effective scale MSUSY can be defined, but for a realistic spectrum it may differ considerably from the typical new particle masses. The implications of the lower (higher) values of αs(MZ) suggested by low-energy (Z-pole) experiments are discussed.
AB - The status of coupling constant unification in the standard model and its supersymmetric extension are discussed. Uncertainties associated with the input coupling constants, mt, threshold corrections at the low and high scales, and possible nonrenormalizable operators are parametrized and estimated. A simple parametrization of a general supersymmetric new particle spectrum is given. It is shown that an effective scale MSUSY can be defined, but for a realistic spectrum it may differ considerably from the typical new particle masses. The implications of the lower (higher) values of αs(MZ) suggested by low-energy (Z-pole) experiments are discussed.
UR - http://www.scopus.com/inward/record.url?scp=0039064162&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0039064162&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.47.4028
DO - 10.1103/PhysRevD.47.4028
M3 - Article
AN - SCOPUS:0039064162
VL - 47
SP - 4028
EP - 4045
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 9
ER -