Renormalization of the flavor-changing neutral currents

Journal Article · Sat Apr 01 04:00:00 EST 1989 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.39.1973· OSTI ID:6448506

Soares, J M; Barroso, A

The flavor-changing amplitudes ..gamma..q/sub i/q/sub j/ and Zq/sub i/q/sub j/ are computed for off-shell particles and without approximations. The calculations are done in the 't Hooft--Feynman gauge, and the on-shell renormalization scheme is used. The Ward-Slavnov-Taylor identities are derived and used to check the results. Putting the external quarks on shell, we found that the corresponding flavor-changing S-matrix elements are not renormalized, i.e., the sum of all counterterms vanishes. Using the renormalization scheme proposed by Sirlin the meaning of this cancellation is clarified.

• Research Organization: Centro de Fisica Nuclear, Universidade de Lisboa, Av. Gama Pinto 2, 1699 Lisboa, Portugal
• OSTI ID: 6448506
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 39:7; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
COMPOSITE MODELS
COUPLING CONSTANTS
CP INVARIANCE
CURRENTS
ELEMENTARY PARTICLES
FIELD THEORIES
FLAVOR MODEL
FUNCTIONS
GREEN FUNCTION
INVARIANCE PRINCIPLES
KOBAYASHI-MASKAWA MATRIX
LIE GROUPS
MATHEMATICAL MODELS
MATRICES
MATRIX ELEMENTS
NEUTRAL CURRENTS
NUCLEAR MODELS
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
RENORMALIZATION
S MATRIX
SHELL MODELS
SU GROUPS
SU-3 GROUPS
SYMMETRY GROUPS
ULTRAVIOLET DIVERGENCES
UNIFIED-FIELD THEORIES