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arXiv 0811.2512hep-ex
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sqrt{s} = 1.96 TeV时ppbar碰撞中夸克和胶子产生的包含搜索

Inclusive Search for Squark and Gluino Production in ppbar Collisions at sqrt{s} = 1.96 TeV

T. Aaltonen

摘要:

我们报告的搜索包容性生产的squarks和胶子在ppbar碰撞在sqrt{s}=1.96 TeV,在事件与大失踪的横向能量和多个喷流的强子在最终状态。该研究使用对应于2 fb-1的积分亮度的CDF运行II数据样本。这些数据与标准模型的预测吻合得很好,没有给出任何夸克或胶子成分的证据。在A_0 = 0,mu < 0,tanbeta = 5的R宇称守恒最小超引力方案中,95%C. L.根据所考虑的夸克和胶子质量,得到了在0.1 Pb和1 Pb之间的范围内的产生截面的上限。对于质量低于280 GeV/c2的胶子,在95% C. L.处排除了任意大的夸克质量,而对于质量简并的胶子和方子,在95%C. L.

英文摘要:

We report on a search for inclusive production of squarks and gluinos in ppbar collisions at sqrt{s}=1.96 TeV, in events with large missing transverse energy and multiple jets of hadrons in the final state. The study uses a CDF Run II data sample corresponding to 2 fb-1 of integrated luminosity. The data are in good agreement with the standard model predictions, giving no evidence for any squark or gluino component. In an R-parity conserving minimal supergravity scenario with A_0 = 0, mu < 0 and tanbeta = 5, 95% C.L. upper limits on the production cross sections in the range between 0.1 pb and 1 pb are obtained, depending on the squark and gluino masses considered. For gluino masses below 280 GeV/c2, arbitrarily large squark masses are excluded at the 95%C.L., while for mass degenerate gluinos and squarks, masses below 392 GeV/c2 are excluded at the 95% C.L.

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