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arXiv 1105.3248hep-ph
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对撞机对暗物质的限制

Collider limits on dark matter

Joachim Kopp

摘要:

在高能对撞机上产生的暗物质对,可能会在反冲暗物质的物体的能量和动量谱中留下可观察到的特征。我们讨论了暗物质在Tevatron和LEP的喷流+丢失能量和光子+丢失能量通道中的签名。在一个与模型无关的有效理论框架下,我们可以将对撞机边界转化为对暗物质-核子散射截面和对暗物质湮灭截面的约束。我们的边界是高度竞争的直接和间接的暗物质搜索,特别是对于轻WIMP和与自旋相关或轻子相互作用的WIMP。例如,我们表明,LEP排除光(<~ 10 GeV)热遗迹暗物质,如果湮灭成电子是占主导地位的湮灭渠道。

英文摘要:

Dark matter pair production at high energy colliders may leave observable signatures in the energy and momentum spectra of the objects recoiling against the dark matter. We discuss signatures of Dark Matter in the jets + missing energy and photon + missing energy channels at the Tevatron and at LEP. Working in a largely model-independent effective theory framework, we can convert the collider bounds into constraints on the dark matter-nucleon scattering cross section and on the dark matter annihilation cross section. Our bounds are highly competitive with those from direct and indirect dark matter searches, especially for light WIMPs and for WIMPs with spin-dependent or leptophilic interactions. For example, we show that LEP rules out light (<~ 10 GeV) thermal relic dark matter if annihilation into electrons is among the dominant annihilation channels.

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