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arXiv 0810.3612hep-ex
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CDF上夸克和胶子的产生及胶子衰变中Sbottom的研究

Inclusive Search for Squarks and Gluinos Production and Search for Sbottom from Gluino Decay at CDF

G. De Lorenzo, M. D'Onofrio, O. Gonzalez-Lopez, M. Martinez-Perez, M. Vidal

摘要:

我们提出了初步的结果,在质子-反质子碰撞的质量中心的能量为1.96 TeV的基础上,约2.0 fb-1的CDF探测器收集的数据在Tevatron运行II的搜索方和胶子。在最小超引力(mSUGRA)的框架下,假设R-宇称守恒,研究了末态具有多个强子喷注和大的横能量缺失的事件。结果进行了比较,标准模型的预测和限制胶子和夸克质量提取。一个特定的搜索由胶子衰变产生的底夸克的超对称伙伴进行使用的事件与失踪的横向能量和两个或更多的喷流,其中至少有一个b标记的样本。数据和标准模型的预测之间有很好的一致性,并提取了对胶子和sbottom质量的限制。

英文摘要:

We present preliminary results on a search for squarks and gluinos in proton-antiproton collisions with a center-of-mass energy of 1.96 TeV and based on about 2.0 fb-1 of data collected by the CDF detector in the Tevatron Run II. Events with multiple jets of hadrons and large missing transverse energy in the final state are studied within the framework of minimal supergravity (mSUGRA) and assuming R-parity conservation. The results are compared to Standard Model predictions and limits on gluino and squark masses are extracted. A specific search for the supersymmetric partner of the bottom quark produced from gluino decays is carried out using a sample of events with missing transverse energy and two or more jets, at least one of them b-tagged. Good agreement is found between data and Standard Model predictions, and limits on gluino and sbottom masses are extracted.

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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