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arXiv 0902.3276hep-ex
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TeV = 1.96时1.9 fb-1 ppbar碰撞中窄tb共振的产生

Search for the Production of Narrow tb Resonances in 1.9 fb-1 of ppbar Collisions at sqrt(s) = 1.96 TeV

CDF Collaboration, T. Aaltonen

摘要:

我们利用费米实验室Tevatron的CDF II探测器记录的1.9 fb^-1的数据,给出了1.96 TeV质子-反质子碰撞中共振tb产生的新极限。我们重建一个候选质量的事件与轻子,中微子的候选者,和两个或三个喷流,并寻找异常的tb生产所模拟的W '->tb。我们对具有类似标准模型耦合的右手W'设定了一个新的限制,排除了95%C. L时低于800 GeV的任何质量。发现在750和950 GeV之间的任何窄的共振tb产生的截面在95%C. L下小于0.28 pb。我们还提出了一个排除的W'耦合强度与W'的质量在300至950 GeV的范围内。

英文摘要:

We present new limits on resonant tb production in proton-antiproton collisions at 1.96 TeV, using 1.9 fb^-1 of data recorded with the CDF II detector at the Fermilab Tevatron. We reconstruct a candidate mass in events with a lepton, neutrino candidate, and two or three jets, and search for anomalous tb production as modeled by W'->tb. We set a new limit on a right-handed W' with standard model-like coupling, excluding any mass below 800 GeV at 95% C.L. The cross-section for any narrow, resonant tb production between 750 and 950 GeV is found to be less than 0.28 pb at 95% C.L. We also present an exclusion of the W' coupling strength versus W' mass over the range 300 to 950 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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