Infrared structure of non-Abelian gauge theories

Journal Article · Mon Aug 15 00:00:00 EDT 1977 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.16.1065· OSTI ID:7290350

Sugamoto, A

The infrared structure of non-Abelian gauge theories is studied explicitly in the lowest nontrivial order in the coupling constant for fermion-fermion and fermion--gauge-boson scattering cross sections. The cancellation of the infrared-divergent terms is realized in physically sensible cross sections when they are expanded in a power series in the bare coupling constant, a situation similar to quantum electrodynamics. However, the renormalization of the coupling constant introduces another infrared singularity, so that the physically sensible cross sections of order (g/sub ren/)/sup 6/ are infrared divergent. This situation is completely foreign to the case of quantum electrodynamics.

• Research Organization: Department of Physics, University of Tokyo, Tokyo, Japan
• OSTI ID: 7290350
• Journal Information: Phys. Rev., D; (United States), Vol. 16:4
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
GAUGE INVARIANCE
INFRARED DIVERGENCES
QUANTUM ELECTRODYNAMICS
BOSONS
COUPLING CONSTANTS
CROSS SECTIONS
FERMIONS
FEYNMAN DIAGRAM
LAGRANGIAN FUNCTION
RENORMALIZATION
SCATTERING
SHELL MODELS
SU GROUPS
DIAGRAMS
ELECTRODYNAMICS
FIELD THEORIES
FUNCTIONS
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
NUCLEAR MODELS
QUANTUM FIELD THEORY
SYMMETRY GROUPS
645400* - High Energy Physics- Field Theory