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MSSM SEARCHES AT LEP 2

机译:MSSM在LEP 2搜索

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摘要

During the LEP2 operation, the 4 LEP experiments have collected data at centre-of-mass energies up to 209 GeV. Those data have been analyzed in the search of charginos, neutralinos and sfermions in the framework of the Minimal Supersym-metric Standard Model (MSSM) with R-parity conservation and violation assuming the lightest neutralino to be the Lightest Supersymmetric Particle (SUGRA-modela) and in the context of the gauge-mediated supersymmetry breaking theory with R-parity conservation where the LSP is the gravitino (GMSB-model). No evidence for a signal was found in any of the channels. The results of each search were used to derive upper limits on production cross-sections and masses. In addition, for the neutralino LSP with R-parity conservation scenario, the combined result of all searches excludes regions in the parameter space of the constrained MSSM, leading to limits on the mass of the LSP. All limits are given at 95% confidence level, all results are preliminary.
机译:在LEP2操作期间,4 LEP实验在质量中心收集了高达209 GEV的数据。已经在CharginoS,NeutralinoS和Syfermions的搜索中分析了这些数据,在最小的超值 - 度量标准模型(MSSM)的框架中,具有R-奇偶校验和违规,假设最轻的中性为最轻的超对称粒子(Sugra-Modela)并且在仪表介导的超对称断裂理论与R-奇偶校验保守的下文中,其中LSP是Gravitino(GMSB模型)。在任何通道中没有发现信号的证据。每个搜索的结果用于导出生产横截面和质量的上限。此外,对于具有R级识别节约场景的中性LSP,所有搜索的组合结果排除了受约束式MSSM的参数空间中的区域,导致LSP的质量限制。所有限制均处于95%的置信水平,所有结果均为初步。

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