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arXiv 1105.0713hep-ph
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最小$B-L$模型的统一和质谱

Unification and mass spectrum in the minimal $B-L$ model

R. J. Hernández-Pinto, A. Pérez-Lorenzana

摘要:

规范$B-L$对称性提供了一个简单的实现,在一个自然的异常自由扩展到MSSM规范群,$SU(3)_c\times SU(2)_L\times U(1)_Y \times U(1)_{B-L}$的跷跷板机制。然而,正如我们在这里讨论的那样,事实证明,MSSM的最简单的$B-L$扩展可能会改变关于规范统一路径的一些概念,并影响低能超对称粒子的预测谱。例如,耦合$g_{B-L}$最终是所有耦合中最小的,最轻的高吉诺是与$B-L$相关的高吉诺。RGE还有助于理解$U(1)_{B-L}$的自发破缺和在低能量下发生在这类模型中的中微子真空期望值。

英文摘要:

Gauging $B-L$ symmetry provides a simple realization of the seesaw mechanism in a naturally anomaly free extension to the MSSM gauge group, $SU(3)_c\times SU(2)_L\times U(1)_Y \times U(1)_{B-L}$. However, as we discuss in here, it turns out that the simplest $B-L$ extension of the MSSM may change some of the conceptions about the path for gauge unification as well as to affect the predicted spectrum of the supersymmetric particles at low energy. For instance, the coupling $g_{B-L}$ ended up to be smallest of all of them and the lightest gaugino is the one related to $B-L$. RGE also help to understand the spontaneous breaking of the $U(1)_{B-L}$ and the vacuum expectation value of the sneutrino at low energies, which occurs in this type of models.

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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