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arXiv 1104.5253hep-ph
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与EWPT一致的扭曲5D标准模型

Warped 5D Standard Model Consistent with EWPT

Joan A. Cabrer, Gero von Gersdorff, Mariano Quiros

备注：
7 pages, 3 figures. Based on talk given by M. Quiros at the Workshop on the Standard Model and Beyond - Cosmology, Corfu Summer Institute, Greece, August 29 - September 5, 2010
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摘要：

对于在AdS背景中传播的具有IR局域Higgs的5D标准模型，体KK规范模与EWPT的兼容性产生了现象学上不吸引人的KK谱（m > 12.5 TeV），并导致了“小层次问题”。对于大块的希格斯粒子，层次问题的解只将先前的边界减少了sqrt（3）。作为一种解决办法，提出了增强体规范对称性的SU（2）_R x U（1）_（B-L）模型。在本说明中，我们描述一个简单得多的（5D标准）模型，其中不再需要引入扩大的规范对称性。它是基于一个扭曲的引力背景，从AdS在IR膜和批量传播希格斯。该模型是一致的EWPT的范围内的大型强子对撞机达到KK质量。

英文摘要：

For a 5D Standard Model propagating in an AdS background with an IR localized Higgs, compatibility of bulk KK gauge modes with EWPT yields a phenomenologically unappealing KK spectrum (m > 12.5 TeV) and leads to a "little hierarchy problem". For a bulk Higgs the solution to the hierarchy problem reduces the previous bound only by sqrt(3). As a way out, models with an enhanced bulk gauge symmetry SU(2)_R x U(1)_(B-L) were proposed. In this note we describe a much simpler (5D Standard) Model, where introduction of an enlarged gauge symmetry is no longer required. It is based on a warped gravitational background which departs from AdS at the IR brane and a bulk propagating Higgs. The model is consistent with EWPT for a range of KK masses within the LHC reach.

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