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首页> 外文期刊>The European physical journal, C. Particles and fields >Search for supersymmetry in events with large missing transverse momentum, jets, and at least one tau lepton in 7 TeV proton-proton collision data with the ATLAS detector
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Search for supersymmetry in events with large missing transverse momentum, jets, and at least one tau lepton in 7 TeV proton-proton collision data with the ATLAS detector

机译:使用ATLAS探测器在7个TeV质子-质子碰撞数据中缺少大的横向动量,射流以及至少一个tau轻子的事件中搜索超对称性

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摘要

A search for supersymmetry (SUSY) in events with large missing transverse momentum, jets, and at least one hadronically decaying τ lepton, with zero or one additional light lepton (e/μ), has been performed using 4.7 fb~(?1) of proton-proton collision data at√s = 7 TeV recorded with the ATLAS detector at the Large Hadron Collider. No excess above the Standard Model background expectation is observed and a 95 % confidence level visible cross-section upper limit for new phenomena is set. In the framework of gauge-mediated SUSY-breaking models, lower limits on the mass scale Λ are set at 54 TeV in the regions where the τ_1 is the next-to-lightest SUSY particle (tanβ > 20). These limits provide the most stringent tests to date of GMSB models in a large part of the parameter space considered.
机译:已经使用4.7 fb〜(?1)搜索了具有大的横向动量缺失,射流以及至少一个强子衰变的τ轻子,零或一个其他轻子(e /μ)的事件中的超对称(SUSY)。大型强子对撞机的ATLAS探测器记录的在√s= 7 TeV的质子-质子碰撞数据。没有观察到超出标准模型背景预期的过量情况,并且为新现象设置了95%的置信水平可见截面上限。在规范介导的SUSY破坏模型的框架中,在τ_1是次轻的SUSY粒子(tanβ> 20)的区域中,质量标度Λ的下限设置为54 TeV。这些限制在所考虑的大部分参数空间中提供了迄今为止最严格的GMSB模型测试。

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