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arXiv 1106.0933hep-ex
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利用多轻子签名在sqrt(s)=7 TeV pp碰撞中寻找标准模型之外的物理

Search for Physics Beyond the Standard Model Using Multilepton Signatures in pp Collisions at sqrt(s)=7 TeV

CMS Collaboration

摘要:

本文提出了在至少有三个轻子和任意数量喷流的事件中寻找超越标准模型的物理学。该数据样本对应于LHC CMS实验在sqrt(s)= 7 TeV的pp碰撞中收集的积分亮度的35个倒数皮巴。一些独家多轻子通道的调查和标准模型的背景被抑制,需要足够的失踪横向能量,不变的质量不一致的Z玻色子,或高喷流活动。数据中的控制样本用于确定背景评估技术的稳健性,并最大限度地减少对模拟的依赖。观察结果与背景预期一致。这些结果限制了以前未探索的超对称参数空间的区域。

英文摘要:

A search for physics beyond the standard model in events with at least three leptons and any number of jets is presented. The data sample corresponds to 35 inverse picobarns of integrated luminosity in pp collisions at sqrt(s) = 7 TeV collected by the CMS experiment at the LHC. A number of exclusive multileptonic channels are investigated and standard model backgrounds are suppressed by requiring sufficient missing transverse energy, invariant mass inconsistent with that of the Z boson, or high jet activity. Control samples in data are used to ascertain the robustness of background evaluation techniques and to minimise the reliance on simulation. The observations are consistent with background expectations. These results constrain previously unexplored regions of supersymmetric parameter space.

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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