μ→eγ and μ→3e processes with polarized muons and supersymmetric grand unified theories

Yasuhiro Okada, Ken Ichi Okumura, Yasuhiro Shimizu

Research output: Contribution to journalArticle

100 Citations (Scopus)

Abstract

μ+→e+γ and μ+→e+e+e- processes are analyzed in detail with polarized muons in supersymmetric grand unified theories. We first present a Dalitz plot distribution for μ+→e+e+e- decay based on an effective Lagrangian with general lepton-flavor-violating couplings and define various P- and T-odd asymmetries. We calculate branching ratios and asymmetries in supersymmetric SU(5) and SO(10) models taking into account complex soft supersymmetry breaking terms. Imposing constraints from experimental bounds on the electron, neutron, and atomic electric dipole moments, we find that the T-odd asymmetry for μ+→e+e+e- can be 15% in the SU(5) case. P-odd asymmetry with respect to muon polarization for μ+→e+γ varies from -100 to 100% for the SO(10) model while it is +100% in the SU(5) case. We also show that the P-odd asymmetries in μ+→e+e+e- and the ratio of μ+→e+e+e- and μ+→e+γ branching fractions are useful to distinguish different models.

Original languageEnglish
Article number094001
Pages (from-to)1-22
Number of pages22
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume61
Issue number9
Publication statusPublished - May 1 2000

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grand unified theory
Asymmetry
muons
asymmetry
Odd
Branching
electric moments
Neutron
Supersymmetry
electric dipoles
Dipole
supersymmetry
leptons
dipole moments
Polarization
plots
Vary
Model
Decay
Electron

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

μ→eγ and μ→3e processes with polarized muons and supersymmetric grand unified theories. / Okada, Yasuhiro; Okumura, Ken Ichi; Shimizu, Yasuhiro.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 61, No. 9, 094001, 01.05.2000, p. 1-22.

Research output: Contribution to journalArticle

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