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arXiv 0801.0248hep-ph
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SUSY SU中非反常U(1)_F的费米子质量族和质子稳定性(5)

Fermion Mass Hierarchy and Proton Stability from Non-anomalous U(1)_F in SUSY SU(5)

Mu-Chun Chen, D. R. Timothy Jones, Arvind Rajaraman, Hai-Bo Yu

摘要:

我们提出了一个结合非反常U(1)_F对称性的超对称SU(5)模型。我们发现了一组U(1)_F荷,它们自动地导致了夸克、轻子和中微子真实的质量等级和混合模式。在我们的模型中,所有的规范反常,包括[U(1)_F]^3反常,都被取消了,而不需要格林-施瓦兹机制或奇异场。在我们的模型中,由5维算子介导的质子衰变被自动抑制,因为由最大右手中微子质量设定的尺度远小于GUT尺度。

英文摘要:

We present a realistic supersymmetric SU(5) model combined with a non-anomalous U(1)_F symmetry. We find a set of U(1)_F charges which automatically lead to the realistic mass hierarchy and mixing patterns for quarks, leptons and neutrinos. All gauge anomalies, including the [U(1)_F]^3 anomaly, are cancelled in our model without invoking the Green-Schwarz mechanism or having exotic fields. Proton decay mediated by dimension 5 operators is automatically suppressed in our model, because the scale set by the largest right-handed neutrino mass is much less than the GUT scale.

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