Enhancement of lepton flavor violation in a model with bimaximal mixing at the grand unification scale

Journal Article · Tue Nov 01 04:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.093004· OSTI ID:20713810

Kanemura, Shinya; Matsuda, Koichi; Ota, Toshihiko; Takasugi, Eiichi; Tsumura, Koji ^[1]; Shindou, Tetsuo ^[2]

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1. Department of Physics, Osaka University, Toyonaka, Osaka 560-0043 (Japan)
2. Scuola Internazionale Superiore di Studi Avanzati, I-34014, Trieste (Italy)

We study phenomenological predictions in the scenario with the quasidegenerate relation among neutrino Dirac masses, m{sub D1}{approx_equal}m{sub D2}<m{sub D3}, assuming the bimaximal mixing at the grand unification scale in supersymmetric standard models with right-handed neutrinos. A sufficient lepton number asymmetry can be produced for successful leptogenesis. The lepton flavor violating process {mu}{yields}e{gamma} can be enhanced due to the Majorana phase, so that it can be detectable at forthcoming experiments. The processes {tau}{yields}e{gamma} and {tau}{yields}{mu}{gamma} are suppressed because of the structure of neutrino Dirac masses, and their branching ratios are smaller than that of {mu}{yields}e{gamma}.

• OSTI ID: 20713810
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BRANCHING RATIO
CONSERVATION LAWS
ELECTRONS
FLAVOR MODEL
LEPTON NUMBER
MUONS
NEUTRINO OSCILLATION
NEUTRINOS
PARTICLE DECAY
PARTICLE PRODUCTION
PHOTONS
REST MASS
STANDARD MODEL
SUPERSYMMETRY
TAU PARTICLES