2003/04/30 by Mitsuru Kakizaki, Yoshiteru Ogura, Fumitaka Shima · 5 citations
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Degenerate energy levels #Flavor #Higgs boson #Lepton #Neutrino #Neutrino Physics Research #Particle physics theoretical and experimental studies #Standard Model (mathematical formulation) #Unobservable #hep-ph
paper · pdf · doi:10.1016/s0370-2693(03)00833-5
published as Phys.Lett. B566 (2003) 210-216 · 11 pages, 3 figures, typos corrected
openalex publication_date 2003/06/30 · arxiv created 2003/09/14 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The triplet Higgs model, which is an extension of the standard model with a weak-scale triplet Higgs boson, is capable of generating small neutrino masses naturally. We investigate lepton flavor violation mediated by the triplet Higgs boson. We stress that various neutrino mass patterns could be distinguished by measuring the lepton flavor violating processes. μ→eee decay is significantly enhanced in the case of the degenerate masses or the inverted-hierarchical masses compared with that in the case of the hierarchical masses. On the other hand, the μ→eγ rate and the μ–e conversion ratio in nuclei is almost insensitive to the mass spectra. We also emphasize that these decay rates tend to increase as the magnitude of Ue3 increases. Lepton flavor nonconserving τ decay modes are expected to be unobservable at planned experiments in the light of the current upper bounds of flavor violating muonic decay.