Two-loop analysis of sin/sup 2/theta/sub W/ and M/sub X/

Journal Article · Mon Mar 01 04:00:00 EST 1982 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.25.1425· OSTI ID:5423104

Chang, N; Wu, X

The solutions of the renormalization-group equations (RGE's) for the coupling constants g/sub i/ are given at the two-loop level. Using the massive renormalization scheme, we determine the boundary condition just from the one-loop constants. To apply the solutions to grand unification theory we also give a general formula for the two-loop contribution of the light Higgs fields to G/sub 1/ x G/sub 2/ x G/sub 3/ gauge theory. Putting all together we predict the values of sin/sup 2/ theta/sub W/ and M/sub X/ for the minimal for SU(5) model. Through a two-step massive renormalization we get another version of the solution of the RGE's which is used to predict the value of sin/sup 2/ theta/sub W/ and M/sub X/ for the SU(5) model with various particle contents, including heavy generations of fermions and other Higgs bosons.

• Research Organization: Department of Physics, The City College of the City University of New York, New York, New York 10031
• OSTI ID: 5423104
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 25:5; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645201* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- General & Scattering Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BOUNDARY CONDITIONS
COUPLING CONSTANTS
ELEMENTARY PARTICLES
FERMIONS
GAUGE INVARIANCE
HIGGS BOSONS
INTERMEDIATE BOSONS
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE MODELS
POSTULATED PARTICLES
RENORMALIZATION
SU GROUPS
SU-5 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
UNIFIED GAUGE MODELS