Neutrino masses and lepton-flavor violation in supersymmetric models with lopsided Froggatt-Nielsen charges
Neutrino masses and lepton-flavor violation in supersymmetric models with lopsided Froggatt-Nielsen charges
复制标题
具有不平衡 Froggatt-Nielsen 电荷的超对称模型中的中微子质量和轻子味违规
DOI：
10.1103/physrevd.63.116010
复制
发表时间：
2000
影响因子：
5
通讯作者：
K. Tobe
中科院分区：
文献类型：
--
作者：
J. Sato;K. Tobe
We analyze in detail lepton-flavor violation (LFV) in the charged-lepton sector such as $\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\mu}}e\ensuremath{\gamma}, \stackrel{\ensuremath{\rightarrow}}{\ensuremath{\tau}}\ensuremath{\mu}\ensuremath{\gamma}, \stackrel{\ensuremath{\rightarrow}}{\ensuremath{\mu}}eee,$ and $\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\mu}}e$ conversion in nuclei, within the framework of supersymmetric models with lopsided Froggatt-Nielsen charges, in which the large mixing in the neutrino sector as well as small mixing in the quark sector can be naturally accommodated. We show that the present experimental limits on the LFV processes already exclude some of the models. The future proposed search for LFV, especially in muon processes, can provide a significant probe to this framework. We also stress the importance of the measurement of ${U}_{e3}^{\mathrm{MNS}}$ in neutrino experiments, and the fact that the KamLAND experiment could play a significant role to test a certain class of models.
We analyze in detail lepton-flavor violation (LFV) in the charged-lepton sector such as $\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\mu}}e\ensuremath{\gamma}, \stackrel{\ensuremath{\rightarrow}}{\ensuremath{\tau}}\ensuremath{\mu}\ensuremath{\gamma}, \stackrel{\ensuremath{\rightarrow}}{\ensuremath{\mu}}eee,$ and $\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\mu}}e$ conversion in nuclei, within the framework of supersymmetric models with lopsided Froggatt-Nielsen charges, in which the large mixing in the neutrino sector as well as small mixing in the quark sector can be naturally accommodated. We show that the present experimental limits on the LFV processes already exclude some of the models. The future proposed search for LFV, especially in muon processes, can provide a significant probe to this framework. We also stress the importance of the measurement of ${U}_{e3}^{\mathrm{MNS}}$ in neutrino experiments, and the fact that the KamLAND experiment could play a significant role to test a certain class of models.