Constraints on gauge theories with diagonal neutral currents

Journal Article · Wed Jun 01 04:00:00 EDT 1977 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.15.3416· OSTI ID:7220697

Paige, F E; Paschos, E A; Trueman, T L

We derive constraints for the representation content of SU(2)xU(1) gauge theories, whose neutral weak interactions conserve all flavors. Among the results are the following: (a) For theories where all right-handed quarks are singlets under weak isospin, the existence of quarks with different values of T/sub L//sup 2/ and Y/sub L/ implies one or more conservation laws in addition to charge. (b) In models with quarks of charges 2/3 and -1/3 and no new conservation laws we find that there are only three possibilities: (i) a generalization of the standard model with left-handed doublets and right-handed singlets, (ii) its mirror image, and (iii) a pure vector model with all quarks in doublets on the right and on the left, with degenerate masses for quarks of the same charge.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 7220697
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 15:11; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
BOSONS
COMPOSITE MODELS
CONSERVATION LAWS
COUPLING
CURRENTS
GAUGE INVARIANCE
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
NEUTRAL CURRENTS
PARTICLE MODELS
PARTICLE PROPERTIES
QUANTUM NUMBERS
QUARK MODEL
STRANGENESS
SU GROUPS
SU-2 GROUPS
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
UNIFIED GAUGE MODELS
WEAK NEUTRAL CURRENTS