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arXiv 1104.3040hep-ph
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从Flavour到SUSY Flavour型号

From Flavour to SUSY Flavour Models

Stefan Antusch, Lorenzo Calibbi, Vinzenz Maurer, Martin Spinrath

摘要:

如果超对称(SUSY)被发现,成功的味模型不仅要解释标准模型费米子的味结构,还要解释它们的标量超伴子的味结构。我们讨论的方面,这样的“超对称风味”模型,对预测的风味结构,在超重力(SUGRA)的背景下。我们指出的重要性,仔细考虑超对称性特定的影响,如1圈超对称性阈值校正和正则归一化,拟合模型时的费米子质量和混合的数据。这纠缠的味道模型与超对称性参数,并导致有趣的预测sparticle光谱。我们证明了这些影响,通过分析一个例子类的味道模型的框架下的SU(5)大统一理论与家庭对称性与真正的三重表示。对于通过超对称软断裂项的味道违反,模型类实现了我们称为“三线性优势”的方案,其中味道违反效应主要由三线性项引起。

英文摘要:

If supersymmetry (SUSY) will be discovered, successful models of flavour not only have to provide an explanation of the flavour structure of the Standard Model fermions, but also of the flavour structure of their scalar superpartners. We discuss aspects of such "SUSY flavour" models, towards predicting both flavour structures, in the context of supergravity (SUGRA). We point out the importance of carefully taking into account SUSY-specific effects, such as 1-loop SUSY threshold corrections and canonical normalization, when fitting the model to the data for fermion masses and mixings. This entangles the flavour model with the SUSY parameters and leads to interesting predictions for the sparticle spectrum. We demonstrate these effects by analyzing an example class of flavour models in the framework of an SU(5) Grand Unified Theory with a family symmetry with real triplet representations. For flavour violation through the SUSY soft breaking terms, the class of models realizes a scheme we refer to as "Trilinear Dominance", where flavour violation effects are dominantly induced by the trilinear terms.

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