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arXiv 1404.0682hep-phhep-ex
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14和100 TeV的中微子暗物质

Neutralino Dark Matter at 14 and 100 TeV

Matthew Low, Lian-Tao Wang

摘要:

近年来,对暗物质的研究已经加强,来自对撞机搜索,直接探测和间接探测的竞争边界。大型强子对撞机(LHC)的对撞机搜索缺乏探测TeV级暗物质所需的质心能量。然而,TeV尺度的暗物质仍然适用于许多超对称模型。在本文中,我们研究了100 TeV的质子质子对撞机的中性伴暗物质的影响范围,并与14 TeV的大型强子对撞机的预测进行了比较。我们采用超对称简化模型的方法,目前达到估计单喷流搜索,软轻子搜索,消失的轨道搜索。搜索适用于纯neutralino光谱,压缩neutralino光谱,和coannihilating光谱。我们发现,从14 TeV到100 TeV的质量达到4-5的改善因素。更具体地说,我们发现,给定1%的系统的不确定性,一个100 TeV的对撞机可以排除winos高达1.4 TeV和希格西诺高达850 GeV的单喷通道。当中性伴子的质量为6.2 TeV,停止点为2.8 TeV,方子为4.0 TeV时,可以排除与胶子的共湮灭情形。使用软轻子搜索,压缩谱与电荷中性伴子分裂的$Δm = 20 - 30$ GeV可以排除中性伴子在$\sim$ 1 TeV。给定一个足够长的电荷子寿命,消失的轨道搜索是非常有效的,我们推断目前的实验界限,估计一个$\sim$ 2 TeV的wino可以被发现和一个$\sim$ 3 TeV的wino可以被排除在外。

英文摘要:

In recent years the search for dark matter has intensified with competitive bounds coming from collider searches, direct detection, and indirect detection. Collider searches at the Large Hadron Collider (LHC) lack the necessary center-of-mass energy to probe TeV-scale dark matter. It is TeV-scale dark matter, however, that remains viable for many models of supersymmetry. In this paper, we study the reach of a 100 TeV proton-proton collider for neutralino dark matter and compare to 14 TeV LHC projections. We employ a supersymmetric simplified model approach and present reach estimates from monojet searches, soft lepton searches, and disappearing track searches. The searches are applied to pure neutralino spectra, compressed neutralino spectra, and coannihilating spectra. We find a factor of 4-5 improvement in mass reach in going from 14 TeV to 100 TeV. More specifically, we find that given a 1% systematic uncertainty, a 100 TeV collider could exclude winos up to 1.4 TeV and higgsinos up to 850 GeV in the monojet channel. Coannihilation scenarios with gluinos can be excluded with neutralino masses of 6.2 TeV, with stops at 2.8 TeV, and with squarks at 4.0 TeV. Using a soft lepton search, compressed spectra with a chargino-neutralino splitting of $Δm = 20 - 30$ GeV can exclude neutralinos at $\sim$ 1 TeV. Given a sufficiently long chargino lifetime, the disappearing track search is very effective and we extrapolate current experimental bounds to estimate that a $\sim$ 2 TeV wino could be discovered and a $\sim$ 3 TeV wino could be excluded.

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