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arXiv 0704.2205hep-ph
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从AdS/TC到LHC的矢量介子

Vector mesons from AdS/TC to the LHC

Maurizio Piai

摘要:

利用AdS/CFT字典,构造了具有行走行为的动力学电弱对称破缺的五维有效描述.该极小模型只包含两个新的参数,约束尺度和新强扇区的有效耦合。这个参数空间受到精确电弱约束和五维耦合是微扰的要求(对应于四维语言中的大N状态)的限制。可观测到的最轻的新态是一组四个接近简并的自旋1态,它们的量子数与标准模型的电弱规范玻色子相同,质量在几TeV范围内。它们的衰变率主要由两个费米子的末态决定。研究了pp -> mu mu和pp -> mu nu事件的数目随LHC积分亮度和两个自由参数的变化。发现在大型强子对撞机是可能的一个重要部分,允许的参数空间高达4 TeV的质量已经与10/fm的积分亮度。

英文摘要:

With the use of the AdS/CFT dictionary, a five-dimensional effective description of dynamical electro-weak symmetry breaking with walking behavior is constructed. The minimal model contains only two new parameters, the confinement scale and the effective coupling of the new strong sector. This parameter space is restricted by the precision electro-weak constraints and by the requirement that the five-dimensional coupling be perturbative (corresponding to the large-N regime in four-dimensional language). The lightest observable new states are a set of four nearly degenerate spin-1 states with the same quantum numbers as the standard-model electro-weak gauge bosons, and masses in the few TeV range. Their decay rate is dominated by two-fermion final states. The number of pp -> mu mu and pp -> mu nu events is studied as a function of the LHC integrated luminosity and of the two free parameters. Discovery at the LHC is possible over a significant part of the allowed parameter space up to masses of 4 TeV already with 10/fm of integrated luminosity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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