Multigeneration SU(N) x SU(N) flavor unifying schemes

Journal Article · Thu Jan 15 04:00:00 EST 1981 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.23.477· OSTI ID:6980586

Davidson, A; Wali, K C

We discuss flavor-chiral grand unifying theories based on semisimple gauge groups. Typical no-go theorems which characterize the SU(N) unification are avoided within the corresponding SU(N) x SU(N) schemes, which furthermore offer a natural generation structure with a fixed number N/sub g/ of generations. We classify all such theories which satisfy basic unification requirements, and find 3< or =N/sub g/< or =7. The most interesting schemes are SU(5) x SU(5): the minimal multigeneration scheme, SU(7) x SU(7) with a single fermionic representation, and SU(9) x SU(9) for N/sub g/=3. The incorporation of heavy-color interactions in these schemes turns out to be inconsistent with the generation structure in the presence of a residual horizontal symmetry. Pati-Salam-type models, which are flavor-color but not left-right symmetric, are also discussed.

• Research Organization: Physics Department, Syracuse University, Syracuse, New York 13210
• OSTI ID: 6980586
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 23:2; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645201* -- High Energy Physics-- Particle Interactions &amp; Properties-Theoretical-- General &amp; Scattering Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRAL SYMMETRY
COLOR MODEL
COMPOSITE MODELS
COUPLING CONSTANTS
FERMIONS
FLAVOR MODEL
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE MODELS
QUARK MODEL
RENORMALIZATION
SU GROUPS
SU-5 GROUPS
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS
UNIFIED GAUGE MODELS