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arXiv 1206.6316hep-ph
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LHC中惰性双重态模型的现状和多重轻子的作用

Status of the Inert Doublet Model and the Role of multileptons at the LHC

Michael Gustafsson, Sara Rydbeck, Laura Lopez-Honorez, Erik Lundstrom

摘要:

惰性双重态模型(IDM)的一个可能特征是提供一个暗物质候选者,同时改变直接和间接对撞机约束,允许一个重希格斯玻色子玻色子。我们研究IDM在最近的结果,希格斯粒子搜索在大型强子对撞机(LHC)结合暗物质直接探测极限的氙实验。我们要问的是,在什么条件下IDM仍然可以容纳重希格斯玻色子。我们发现,IDM的情况下,希格斯玻色子在160-600 GeV的质量范围被排除,只有当所有的实验约束相结合。对于只解释一小部分暗物质的模型,限制被削弱了,并且允许带有重希格斯粒子的IDM。我们讨论了未来在LHC的四轻子加上丢失的能量通道检测这样的IDM方案的前景。这个信号可以出现在运行在\sqrt{s} = 14 TeV的第一年,我们提出了一些基准模型的检测器级研究。

英文摘要:

A possible feature of the inert doublet model (IDM) is to provide a dark matter candidate together with an alteration of both direct and indirect collider constraints that allow for a heavy Higgs boson. We study the IDM in light of recent results from Higgs searches at the Large Hadron Collider (LHC) in combination with dark matter direct detection limits from the XENON experiment. We ask under what conditions the IDM can still accommodate a heavy Higgs boson. We find that IDM scenarios with a Higgs boson in the mass range 160-600 GeV are ruled out only when all experimental constraints are combined. For models explaining only a fraction of the dark matter the limits are weakened, and IDMs with a heavy Higgs are allowed. We discuss the prospects for future detection of such IDM scenarios in the four-lepton plus missing energy channel at the LHC. This signal can show up in the first year of running at \sqrt{s} = 14 TeV, and we present detector-level studies for a few benchmark models.

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