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arXiv 1301.7692hep-ph
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弯曲空间中的希格斯玻色子玻色子：从体到膜

Higgs Bosons in Warped Space, from the Bulk to the Brane

Mariana Frank, Nima Pourtolami, Manuel Toharia

备注：
29 pages, 5 figures
发表信息：
Phys. Rev. D 87, 096003 (2013)
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摘要：

在弯曲的额外的维模型的背景下，所有的领域在散装传播，我们解决了散装标量希格斯玻色子的现象，并计算其生产截面在大型强子对撞机，以及其介导的味道改变中性电流的树级效应。我们基于两种不同的方法进行计算。首先，我们通过考虑降维产生的所有自由度（卡鲁扎克莱因模式（KK）的无限塔）来分析计算我们的预测。在第二种方法中，我们进行我们的计算数值只考虑前几个KK模式，目前在4维有效理论所造成的影响。在希格斯粒子远离膜泄漏的情况下，这两种方法都给出了相同的预测，因为较重的KK模的影响是解耦的。然而，当希格斯玻色子被推向TeV膜时，这两种方法似乎只有当一种方法包括越来越重的自由度（似乎没有解耦）时才是等价的。为了调和这些结果，有必要引入一种高阶导数算子，它本质上编码了重KK模的积分效应，并将膜希格斯粒子打扮得看起来就像一个大块希格斯粒子。

英文摘要：

In the context of warped extra-dimensional models with all fields propagating in the bulk, we address the phenomenology of a bulk scalar Higgs boson, and calculate its production cross section at the LHC as well as its tree-level effects on mediating flavor changing neutral currents. We perform the calculations based on two different approaches. First, we compute our predictions analytically by considering all the degrees of freedom emerging from the dimensional reduction (the infinite tower of Kaluza Klein modes (KK)). In the second approach, we perform our calculations numerically by considering only the effects caused by the first few KK modes, present in the 4-dimensional effective theory. In the case of a Higgs leaking far from the brane, both approaches give the same predictions as the effects of the heavier KK modes decouple. However, as the Higgs boson is pushed towards the TeV brane, the two approaches seem to be equivalent only when one includes heavier and heavier degrees of freedom (which do not seem to decouple). To reconcile these results it is necessary to introduce a type of higher derivative operator which essentially encodes the effects of integrating out the heavy KK modes and dresses the brane Higgs so that it looks just like a bulk Higgs.

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