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Lepton flavor changing processes and CP violation in the 331 model

Abstract

By extending the electroweak gauge group to SU(3){sub L}x U(1){sub y}, the 331 model incorporates dilepton gauge bosons Y which do not respect individual lepton family number. We point out that, in addition to family diagonal couplings such as Y-e-e that change lepton family number by two units, dileptons may also have family nondiagonal couplings such as Y-{mu}-e. The latter coupling violates lepton family number by a single unit and manifests itself via lepton flavor changing decays such as {mu} {yields} e{gamma} and p --+ c-1. The family non-diagonal interaction can be CP violating and typically generates extremely large leptonic electric dipole moments. We demonstrate a natural mechanism for eliminating both single unit lepton flavor violation and large leptonic CP violation. Although we focus on the 331 model, our results are applicable to other dilepton models as well, including SU(15) grand unification. (author). 41 refs., 2 figs.
Authors:
Liu, J T; [1]  Ng, D
  1. Texas A and M Univ., College Station, TX (United States). Center for Theoretical Physics
Publication Date:
Jan 01, 1994
Product Type:
Technical Report
Report Number:
TRI-PP-94-2; CTP-TAMU-77/93; HEP-PH-9401228.
Reference Number:
SCA: 662120; PA: AIX-28:078283; EDB-97:147044; SN: 97001881519
Resource Relation:
Other Information: PBD: Jan 1994
Subject:
66 PHYSICS; INVARIANCE PRINCIPLES; SU GROUPS; QUANTUM FLAVORDYNAMICS; STANDARD MODEL; CP INVARIANCE; HIGGS MODEL; LEPTONS; NEUTRAL CURRENTS; WEINBERG-SALAM GAUGE MODEL
OSTI ID:
548334
Research Organizations:
TRIUMF, Vancouver, BC (Canada)
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: ON: DE98606682; TRN: CA9700592078283
Availability:
INIS; OSTI as DE98606682
Submitting Site:
INIS
Size:
22 p.
Announcement Date:

Citation Formats

Liu, J T, and Ng, D. Lepton flavor changing processes and CP violation in the 331 model. Canada: N. p., 1994. Web.
Liu, J T, & Ng, D. Lepton flavor changing processes and CP violation in the 331 model. Canada.
Liu, J T, and Ng, D. 1994. "Lepton flavor changing processes and CP violation in the 331 model." Canada.
@misc{etde_548334,
title = {Lepton flavor changing processes and CP violation in the 331 model}
author = {Liu, J T, and Ng, D}
abstractNote = {By extending the electroweak gauge group to SU(3){sub L}x U(1){sub y}, the 331 model incorporates dilepton gauge bosons Y which do not respect individual lepton family number. We point out that, in addition to family diagonal couplings such as Y-e-e that change lepton family number by two units, dileptons may also have family nondiagonal couplings such as Y-{mu}-e. The latter coupling violates lepton family number by a single unit and manifests itself via lepton flavor changing decays such as {mu} {yields} e{gamma} and p --+ c-1. The family non-diagonal interaction can be CP violating and typically generates extremely large leptonic electric dipole moments. We demonstrate a natural mechanism for eliminating both single unit lepton flavor violation and large leptonic CP violation. Although we focus on the 331 model, our results are applicable to other dilepton models as well, including SU(15) grand unification. (author). 41 refs., 2 figs.}
place = {Canada}
year = {1994}
month = {Jan}
}