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arXiv 1208.3477hep-ex
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sqrt(s)= 7 TeV pp到W +喷注事件中的双射流质谱研究

Study of the dijet mass spectrum in pp to W + jets events at sqrt(s) = 7 TeV

CMS Collaboration

摘要:

我们报告的调查的两个最高的横向动量的射流在pp到W+2-喷流和W+3-喷流事件的不变质谱,以寻找共振增强。数据样本对应于在sqrt(s)= 7 TeV下用CMS检测器收集的5.0逆毫微微电子能的积分亮度。我们没有发现任何证据的CDF协作报告的异常结构,并建立一个上限为5.0 pb的生产截面上的质量接近150 GeV的通用高斯信号在95%的置信水平。此外,我们排除了两个理论模型,预测近150 GeV的CDF类双喷射共振。

英文摘要:

We report an investigation of the invariant mass spectrum of the two jets with highest transverse momentum in pp to W+2-jet and W+3-jet events to look for resonant enhancements. The data sample corresponds to an integrated luminosity of 5.0 inverse femtobarns collected with the CMS detector at sqrt(s) = 7 TeV. We find no evidence for the anomalous structure reported by the CDF Collaboration, and establish an upper limit of 5.0 pb at 95% confidence level on the production cross section for a generic Gaussian signal with mass near 150 GeV. Additionally, we exclude two theoretical models that predict a CDF-like dijet resonance near 150 GeV.

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