New Constraints on Dark Matter from CMS and ATLAS Data
New Constraints on Dark Matter from CMS and ATLAS Data
复制标题
CMS 和 ATLAS 数据对暗物质的新限制
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Gregory Peim
中科院分区：
文献类型：
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作者：
Sujeet Akula;D. Feldman;Zuowei Liu;P. Nath;Gregory Peim
研究了首次 CMS 和 ATLAS SUSY 搜索对暗物质的限制。结果表明，在最小超重力模型中，大型强子对撞机对超对称性的早期搜索已经耗尽了暗物质直接探测实验中的大部分特征空间。特别是，在低中子质量区域，XENON 和 CDMS 实验中检测暗物质信号的前景受到显着影响。这里，暗物质的残余密度通常来自早期宇宙中的轻子共湮灭。相比之下，我们发现 CMS 和 ATLAS 分析未触及希格斯极点和双曲分支/焦点区域，目前最新的 XENON 结果正在探测这些区域。还对具有非通用软断裂的超重力模型进行了分析，其中发现在最小 SUGRA 情况下被 CMS 和 ATLAS 切割耗尽的暗物质特征空间的一部分被重新填充。因此，在大型强子对撞机最小超重力耗尽区域中观察暗物质可能表明软断裂的非普遍性。
Constraints on dark matter from the first CMS and ATLAS SUSY searches are investigated. It is shown that within the minimal supergravity model, the early search for supersymmetry at the LHC has depleted a large portion of the signature space in dark matter direct detection experiments. In particular, the prospects for detecting signals of dark matter in the XENON and CDMS experiments are significantly affected in the low neutralino mass region. Here the relic density of dark matter typically arises from slepton coannihilations in the early universe. In contrast, it is found that the CMS and ATLAS analyses leave untouched the Higgs pole and the Hyperbolic Branch/Focus Point regions, which are now being probed by the most recent XENON results. Analysis is also done for supergravity models with non-universal soft breaking where one finds that a part of the dark matter signature space depleted by the CMS and ATLAS cuts in the minimal SUGRA case is repopulated. Thus, observation of dark matter in the LHC depleted region of minimal supergravity may indicate non-universalities in soft breaking.
影响因子：
8.6
作者：
The Atlas Collaboration
通讯作者：
The Atlas Collaboration
影响因子：
8.7
作者：
Komatsu, E.;Smith, K. M.;Wright, E. L.
通讯作者：
Wright, E. L.