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arXiv 0907.3523hep-phhep-th
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软壁AdS中的费米子味

Fermion Flavor in Soft-Wall AdS

Tony Gherghetta, Daniel Sword

摘要:

本文给出了具有软壁的弯曲额外维中多代费米子的模型。大量的希格斯凝聚体负责为零模费米子产生质量,但由于不同口味之间的大量混合而导致额外的复杂性。我们扩展现有的单代分析,考虑新的特殊情况下,可以推导出解析解,并讨论风味约束。一般三代的情况下,然后使用一个简单的数值例程处理。假设无政府的5D参数,我们发现一个费米子质谱类似的标准模型夸克和轻子高度简并耦合到卡鲁扎-克莱因规范玻色子。这证实了软壁模型具有与硬壁模型相似的吸引人的特征,为推广现有的唯象分析提供了一个框架。

英文摘要:

The formalism for modeling multiple fermion generations in a warped extra dimension with a soft-wall is presented. A bulk Higgs condensate is responsible for generating mass for the zero-mode fermions but leads to additional complexity from large mixing between different flavors. We extend existing single-generation analyses by considering new special cases in which analytical solutions can be derived and discuss flavor constraints. The general three-generation case is then treated using a simple numerical routine. Assuming anarchic 5D parameters we find a fermion mass spectrum resembling the standard model quarks and leptons with highly degenerate couplings to Kaluza-Klein gauge bosons. This confirms that the soft-wall model has similar attractive features as that found in hard-wall models, providing a framework to generalize existing phenomenological analyses.

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