Diagonal neutral currents

Journal Article · Thu Mar 31 23:00:00 EST 1977 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.15.1966· OSTI ID:7317023

Paschos, E A

General conditions are derived for neutral currents to be diagonal in all quark fields. The solution is a generalization of the Glashow-Iliopoulos-Maiani scheme to many quark fields with two distinct charges. It is shown that the diagonality and universality of the neutral operator is preserved by leading terms of the single-loop diagrams. In contrast to the basic assumption of this article, neutral-current charm-changing transitions lead to apparent vertical-bar..delta..Svertical-bar = 1 neutral currents, apparent lepton-number violation, and large D/sup 0/-D-bar/sup 0/ mixing. The article also describes a sum rule, which is independent of the number of quarks, and surveys the experimental status of charm-changing neutral currents.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 7317023
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 15:7; 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
CHARM PARTICLES
COMPOSITE MODELS
CURRENTS
ELEMENTARY PARTICLES
EQUATIONS
GAUGE INVARIANCE
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
NEUTRAL CURRENTS
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUARK MODEL
STRANGENESS
SU GROUPS
SU-2 GROUPS
SUM RULES
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS