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arXiv 1202.5653hep-ex
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在$\sqrt{s} = 1.96$ TeV的$p\bar{p}$碰撞中寻找与单个顶夸克有关的暗物质候选者

Search for a dark matter candidate produced in association with a single top quark in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV

CDF Collaboration

摘要:

我们报告了一个新的搜索暗物质的数据样本的综合光度为7.7 FB $^{-1}$的Tevatron $p\bar{p}$碰撞在$\sqrt{s} = 1.96$ TeV,收集的CDF II探测器。我们寻找一个暗物质的候选者,$D$,与一个顶夸克。我们认为强子衰变模式的顶夸克排他,产生一个最终状态的三个喷流与失踪的横向能量。数据与标准模型一致,因此,我们设置了95%的置信水平上限的横截面的过程$p\bar{p}\rightarrow t+D$作为暗物质候选者的质量的函数。对于质量在0-150 GeV/ $c^{2}$范围内的暗物质粒子,其极限约为0.5 pb。

英文摘要:

We report a new search for dark matter in a data sample of an integrated luminosity of 7.7 fb$^{-1}$ of Tevatron $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV, collected by the CDF II detector. We search for production of a dark matter candidate, $D$, in association with a single top quark. We consider the hadronic decay mode of the top quark exclusively, yielding a final state of three jets with missing transverse energy. The data are consistent with the standard model; we thus set 95% confidence level upper limits on the cross section of the process $p\bar{p}\rightarrow t+D$ as a function of the mass of the dark-matter candidate. The limits are approximately 0.5 pb for a dark-matter particle with mass in the range of 0-150 GeV/$c^{2}$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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