Lepton-flavor-changing processes and [ital CP] violation in the SU(3)[sub [ital c]][times]SU(3)[sub [ital L]][times]U(1)[sub [ital X]] model

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.50.548· OSTI ID:7112588

Liu, J T ^[1]; Ng, D ^[2]

---

1. Center for Theoretical Physics, Department of Physics, Texas A M University, College Station, Texas 77843-4242 (United States)
2. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada)

By extending the electroweak gauge group to SU(3)[sub [ital L]][times]U(1)[sub [ital Y]], the SU(3)[sub [ital c]][times]SU(3)[sub [ital L]][times]U(1)[sub [ital X]] (3-3-1) dilepton gauge bosons [ital Y] which do not respect individual lepton family number. We point out that, in addition to family diagonal couplings such as [ital Y]-[ital e]-[ital e] that change the lepton family number by two uinits, dileptons may also have family nondiagonal couplings such as [ital Y]-[mu]-[ital e]. The latter coupling violates lepton family number by a single unit and manifests itself via lepton-flavor-changing decays such as [mu][r arrow]3[ital e] and [mu][r arrow][ital e][gamma]. The family nondiagonal interaction can be [ital CP] violating and typically generates an extremely large leptonic electric dipole moment. We demonstrate a natural mechanism for eliminating both single unit lepton-flavor violation and large leptonic [ital CP] violation. Although we focus on the 3-3-1 model, our results are applicable to other dilepton models as well, including SU(15) grand unification.

• DOE Contract Number: FG05-85ER40219
• OSTI ID: 7112588
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 50:1; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662210* -- Specific Theories & Interaction Models
662370 -- Decays of Leptons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
COMPOSITE MODELS
CP INVARIANCE
DIPOLE MOMENTS
ELECTRIC DIPOLE MOMENTS
ELECTRIC MOMENTS
ELEMENTARY PARTICLES
FIELD THEORIES
FLAVOR MODEL
GRAND UNIFIED THEORY
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
INVARIANCE PRINCIPLES
LEPTON NUMBER
LIE GROUPS
MATHEMATICAL MODELS
NEUTRAL-CURRENT INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUARK MODEL
SU GROUPS
SU-3 GROUPS
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
VIOLATIONS