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黑洞遗迹在LHC产生暗物质

Dark Matter Production at LHC from Black Hole Remnants

Gouranga C Nayak

备注：
New paragraph added, 12 pages, 4 Figs, This version is accepted for publication in "Particles and Nuclei, Letters"
发表信息：
Phys.Part.Nucl.Lett.8:337-341,2011
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摘要：

我们研究了欧洲核子研究中心大型强子对撞机（CERN LHC）从黑洞遗迹（BHR）中产生暗物质的过程。我们发现，这些BHR在LHC的典型质量是~ 5-10 TeV，这是比其他暗物质的候选者，如：轴子，axino，neutralino等，我们建议通过单一的喷流生产过程中的PP ->喷气+BHR（暗物质）在欧洲核子研究中心LHC检测到这种暗物质。我们发现，零碰撞参量部分子碰撞，单喷流截面是不可忽略的标准模型背景相比，是远远高于其他暗物质的情况下，迄今为止研究。我们还发现，在CERN LHC中，喷流产生的dσ/dp_T随p_T的增加而增加，而在所有其他暗物质方案中dσ/dp_T都是减小的。这可能为大型强子对撞机的暗物质探测提供有用的信号。然而，我们发现，当包含非弹性的碰撞参量依赖效应时，来自上述过程的单喷流横截面变得比标准模型背景小得多，并且可能在LHC中检测不到。

英文摘要：

We study dark matter production at CERN LHC from black hole remnants (BHR). We find that the typical mass of these BHR at LHC is ~ 5-10 TeV which is heavier than other dark matter candidates such as: axion, axino, neutralino etc. We propose the detection of this dark matter via single jet production in the process pp -> jet +BHR(dark matter) at CERN LHC. We find that for zero impact parameter partonic collisions, the monojet cross section is not negligible in comparison to the standard model background and is much higher than the other dark matter scenarios studied so far. We also find that dσ/dp_T of jet production in this process increases as p_T increases, whereas in all other dark matter scenarios the dσ/dp_T decreases at CERN LHC. This may provide an useful signature for dark matter detection at LHC. However, we find that when the impact parameter dependent effect of inelasticity is included, the monojet cross section from the above process becomes much smaller than the standard model background and may not be detectable at LHC.

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