Fermion Masses, Mixings and Proton Decay in a Randall-Sundrum Model
Fermion Masses, Mixings and Proton Decay in a Randall-Sundrum Model
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DOI：
10.1016/s0370-2693(00)01399-x
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发表时间：
2000-10
影响因子：
4.4
通讯作者：
S. Huber;Q. Shafi
中科院分区：
文献类型：
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作者：
S. Huber;Q. Shafi
我们考虑 Randall-Sundrum 模型，其中标准模型费米子和规范玻色子对应于体场。我们展示了如何在不引入分层汤川耦合的情况下解释观察到的带电费米子质量和 CKM 混合。然后，我们研究与负责质子衰变、中微子质量和风味改变中性流的不可重整算子相关的质量尺度的影响。虽然高达 1011–1012GeV 的质量尺度原则上是可能的，但仍然需要 10−8 阶的无量纲耦合来充分抑制质子衰变。大型中微子混合似乎需要标准模型之外的新物理学。
We consider a Randall–Sundrum model in which the Standard Model fermions and gauge bosons correspond to bulk fields. We show how the observed charged fermion masses and CKM mixings can be explained, without introducing hierarchical Yukawa couplings. We then study the impact on the mass scales associated with non-renormalizable operators responsible for proton decay, neutrino masses, and flavor changing neutral currents. Although mass scales as high as 1011–1012GeV are in principle possible, dimensionless couplings of order 10−8are still needed to adequately suppress proton decay. Large neutrino mixings seem to require new physics beyond the Standard Model.