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arXiv 1206.5741hep-ph
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在最小3-3-1模型中结合I型和II型跷跷板机制

Combining type I and type II seesaw mechanisms in the minimal 3-3-1 model

W. Caetano, D. Cogollo, C. A. de S. Pires, P. S. Rodrigues da Silva

摘要:

最小的3-3-1模型在4- 5 TeV的能量之前都是微扰的,这对产生eV量级的中微子质量提出了挑战,主要是如果人们想利用跷跷板机制的话。作为一种手段,以规避这个问题,我们提出了一个修改的模型,使其完全容纳I型和II型跷跷板机制。我们表明,这两种机制的结合产生的中微子质量表达式抑制了高功率的截止尺度,$M^5$,在其分母。当$M$在几TeV左右时,有了这样一个抑制项,我们自然可以得到eV尺度上的中微子质量。我们还通过过程$μ\rightarrow eγ$研究了轻子味破坏的大小。

英文摘要:

The minimal 3-3-1 model is perturbative until energies around 4-5TeV, posing a challenge to generate neutrino masses at eV scale, mainly if one aims to take advantage of the seesaw mechanism. As a means to circumvent this problem we propose a modification of the model such that it accommodates the type I and type II seesaw mechanisms altogether. We show that the conjunction of both mechanisms yield a neutrino mass expression suppressed by a high power of the cutoff scale, $M^5$, in its denominator. With such a suppression term we naturally obtain neutrino masses at eV scale when $M$ is around few TeV. We also investigate the size of lepton flavor violation through the process $μ\rightarrow eγ$.

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。

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