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arXiv 1003.5095hep-ph
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仅含Higgs双重态的超对称模型中的自发左右对称破缺

Spontaneous Left-Right Symmetry Breaking in Supersymmetric Models with only Higgs Doublets

Sudhanwa Patra, Anjishnu Sarkar, Utpal Sarkar

摘要:

研究了超对称左右模型中的宇称破缺问题,其中左右对称性被Higgs二重态(携带$B-L=\pm 1$)破缺。与带有三重态希格斯标量(携带$B-L=\pm 2$)的左右对称模型不同,在这个模型中,通过添加奇偶校验奇单态可以自发地打破奇偶校验。然后,我们讨论了如何在这个模型中通过添加额外的费米子单态来调用III型跷跷板的中微子质量。我们考虑了与统一方案一致的质量矩阵的简单形式,并演示了它们如何再现所需的中微子混合矩阵。在这个模型中,宇宙的重子不对称性是通过轻子生成产生的。模型中所需的质量尺度,然后发现是一致的规范耦合统一。

英文摘要:

We studied the question of parity breaking in a supersymmetric left-right model, in which the left-right symmetry is broken with Higgs doublets (carrying $B-L=\pm 1$). Unlike the left-right symmetric models with triplet Higgs scalars (carrying $B-L=\pm 2$), in this model it is possible to break parity spontaneously by adding a parity odd singlet. We then discussed how neutrino mass of type III seesaw can be invoked in this model by adding extra fermion singlets. We considered simple forms of the mass matrices that are consistent with the unification scheme and demonstrate how they can reproduce the required neutrino mixing matrix. In this model, the baryon asymmetry of the universe is generated via leptogenesis. The required mass scales in the model is then found to be consistent with the gauge coupling unification.

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