Search for diphoton events with large missing transverse energy with 36 pb-1 of 7 TeV proton-proton collision data with the ATLAS detector
Search for diphoton events with large missing transverse energy with 36 pb-1 of 7 TeV proton-proton collision data with the ATLAS detector
复制标题
使用 ATLAS 探测器使用 7 TeV 质子-质子碰撞数据中的 36 pb-1 搜索具有大量缺失横向能量的双光子事件
DOI：
10.1140/epjc/s10052-011-1744-9
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Aad G
中科院分区：
文献类型：
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作者：
Aad G
利用TeV的36 pb− 1质子-质子碰撞数据，ATLAS协作组已经完成了一项寻找具有大的缺失横向能量的双光子事件的工作。在没有观测到超过标准模型预测的事件的情况下，在规范介导的超对称性破缺（GGM）的广义模型中，新物理的横截面上设定了95%的置信水平（CL）上限，σ<0.38−0.65 pb，其中最轻的中性伴子是双星，在一个具有一个普适额外维度（UED）的特定模型中，σ<0.18−0.23 pb。GGM胶子质量的95%CL下限为560 GeV，而UED紧化半径R的下限为1/R>961 GeV。这些限制提供了迄今为止这些模型的最严格测试。
Making use of 36 pb−1of proton–proton collision data atTeV, the ATLAS Collaboration has performed a search for diphoton events with large missing transverse energy. Observing no excess of events above the Standard Model prediction, a 95% Confidence Level (CL) upper limit is set on the cross section for new physics ofσ<0.38−0.65 pb in the context of a generalised model of gauge-mediated supersymmetry breaking (GGM) with a bino-like lightest neutralino, and ofσ<0.18−0.23 pb in the context of a specific model with one universal extra dimension (UED). A 95% CL lower limit of 560 GeV, for bino masses above 50 GeV, is set on the GGM gluino mass, while a lower limit of 1/R>961 GeV is set on the UED compactification radiusR. These limits provide the most stringent tests of these models to date.