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arXiv 0808.1372hep-ph
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大型强子对撞机上超临界弦宇宙学的超对称信号

Supersymmetry Signals of Supercritical String Cosmology at the Large Hadron Collider

Bhaskar Dutta, Alfredo Gurrola, Teruki Kamon, Abram Krislock, A. B. Lahanas, N. E. Mavromatos, D. V. Nanopoulos

摘要:

我们调查的最小超引力(mSUGRA)信号在LHC的超临界弦宇宙学(SSC)的背景下。在这个理论中,一个时间相关的光子的存在为我们提供了一个平稳演化的暗能量,并修改了标准宇宙学的mSUGRA模型的暗物质允许区域。这样的介子将超对称暗物质密度(中性伴子)稀释了O(10)倍,因此在SSC中允许标准场景中有太多暗物质的区域。与标准方案不同的是,在这种方案中,LHC预期的最终态由Z玻色子、希格斯玻色子玻色子和/或高能态组成。我们将展示如何描述这些最终状态,并确定模型参数。利用这些参数,我们确定了暗物质的含量和中性子质子截面。所有这些技术也可以应用于确定模型参数的SSC模型与不同的超对称性破坏的情况下。

英文摘要:

We investigate the minimal supergravity (mSUGRA) signals at the LHC in the context of supercritical string cosmology (SSC). In this theory, the presence of a time dependent dilaton provides us with a smoothly evolving dark energy and modifies the dark matter allowed region of the mSUGRA model with standard cosmology. Such a dilaton dilutes the supersymmetric dark matter density (of neutralinos) by a factor O(10) and consequently the regions with too much dark matter in the standard scenario are allowed in the SSC. The final states expected at the LHC in this scenario, unlike the standard scenario, consist of Z bosons, Higgs bosons, and/or high energy taus. We show how to characterize these final states and determine the model parameters. Using these parameters, we determine the dark matter content and the neutralino-proton cross section. All these techniques can also be applied to determine model parameters in SSC models with different SUSY breaking scenarios.

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