arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0911.3605hep-ph
收藏

$A_4$对称See-Saw模型中带电轻子味破坏辐射衰变$\ell_i \to \ell_j + γ$

Charged Lepton Flavour Violating Radiative Decays $\ell_i \to \ell_j + γ$ in See-Saw Models with $A_4$ Symmetry

C. Hagedorn, E. Molinaro, S. T. Petcov

摘要:

在一类含有三个重右手Majorana中微子的超对称$A_4$模型中研究了带电轻子味违反(LFV)辐射衰变$μ\to e+γ$、$τ\to μ+γ$和$τ\to e +γ$,其中轻子(中微子)混合被预言为首级(LO)三双峰.轻中微子质量是通过I型跷跷板机制产生的。分析是在最小超引力(mSUGRA)的框架内进行的,该框架提供了大统一$M_X \approx 2 \times 10^{16}$ GeV尺度上的味普适边界条件。详细的预测的三个LFV衰变率得到两个明确的实现的$A_4$模型由于Altarelli和Feruglio和Altarelli和Meloni,分别。

英文摘要:

The charged lepton flavour violating (LFV) radiative decays, $μ\to e+γ$, $τ\to μ+γ$ and $τ\to e +γ$ are investigated in a class of supersymmetric $A_4$ models with three heavy right-handed (RH) Majorana neutrinos, in which the lepton (neutrino) mixing is predicted to leading order (LO) to be tri-bimaximal. The light neutrino masses are generated via the type I see-saw mechanism. The analysis is done within the framework of the minimal supergravity (mSUGRA) scenario, which provides flavour universal boundary conditions at the scale of grand unification $M_X \approx 2 \times 10^{16}$ GeV. Detailed predictions for the rates of the three LFV decays are obtained in two explicit realisations of the $A_4$ models due to Altarelli and Feruglio and Altarelli and Meloni, respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑