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arXiv 0903.2618hep-ex
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在sqrt(s)=1.96 TeV的p-pbar碰撞中寻找Gluino介导的Sbottom产生

Search for Gluino-Mediated Sbottom Production in p-pbar Collisions at sqrt(s)=1.96 TeV

CDF Collaboration, T. Aaltonen

摘要:

本文报道了在费米实验室的对撞机探测器收集到的2.5 fb-1的积分亮度的sqrt(s)=1.96 TeV的数据中寻找由胶子衰变产生的底夸克的超对称伙伴。候选事件被选择为需要两个或更多个喷流和大的缺失横向能量。至少有两个喷流需要被标记为来自b夸克,以提高灵敏度。结果与标准模型的预测符合得很好,没有给出胶子衰变为sbottom夸克的证据。这一结果限制了在95%可信度水平下,对于350 GeV的胶子质量,胶子对产生的截面小于40 fb。

英文摘要:

We report on a search for the supersymmetric partner of the bottom quark produced from gluino decays in data from 2.5 fb-1 of integrated luminosity collected by the Collider Detector at Fermilab at sqrt(s)=1.96 TeV. Candidate events are selected requiring two or more jets and large missing transverse energy. At least two of the jets are required to be tagged as originating from a b quark to enhance the sensitivity. The results are in good agreement with the prediction of the standard model processes, giving no evidence for gluino decay to sbottom quarks. This result constrains the gluino-pair-production cross section to be less than 40fb at 95% credibility level for a gluino mass of 350 GeV.

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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