Multi-instanton-induced baryon- and lepton-number violation in the electroweak theory

Journal Article · Fri Mar 15 04:00:00 EST 1991 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.43.1999· OSTI ID:5714028

Aoyama, H; Kikuchi, H ^[1]

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1. Department of Physics, College of Liberal Arts and Sciences, Kyoto University, Yoshida, Kyoto 606, Japan (JP)

The {Delta}{ital B}={Delta}{ital L}{ne}0 process in the standard electroweak theory is investigated by using the instanton formalism. Fermion zero modes yield a two-body interaction between an instanton and anti-instanton. The expansion in terms of numbers of instantons is proven to be equivalent (at all orders) to the perturbation of a field theory whose vertices are induced by an instanton or an anti-instanton. The resulting cross section satisfies the unitarity bound.

• OSTI ID: 5714028
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 43:6; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
645300 -- High Energy Physics-- Particle Invariance Principles & Symmetries
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON NUMBER
CROSS SECTIONS
FIELD THEORIES
FUNCTIONS
GREEN FUNCTION
INSTANTONS
INVARIANCE PRINCIPLES
ISOSPIN
LEPTON NUMBER
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE MODELS
PARTICLE PROPERTIES
PERTURBATION THEORY
QUASI PARTICLES
SU GROUPS
SU-2 GROUPS
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
UNITARITY
WEINBERG-SALAM GAUGE MODEL