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arXiv 0910.3549hep-ex
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在CDF半轻子衰变中观察到双玻色子的产生

Observation of Diboson Production in a Semileptonic Decay at CDF

Martina Hurwitz

摘要:

我们提出的第一个观察WW+WZ生产的通道与一个确定的轻子和两个射流在2.7 fb $^{-1}$的积分亮度收集与CDF II探测器在$p\bar{p}$碰撞在$\sqrt{s} = 1.96$ TeV。使用矩阵元素计算将信号与大背景分离,并观察到显著性为5.4 $σ$。WW+WZ生产横截面的测量结果为$17.7 \pm 3.1$(stat)$\pm 2.4$(sys)pb,与标准模型预测值吻合良好。一个免费的测量使用一个适合的dijet质量。

英文摘要:

We present the first observation of WW+WZ production in the channel with an identified lepton and two jets in 2.7 fb$^{-1}$ of integrated luminosity collected with the CDF II detector in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV. The signal is separated from the large background using matrix element calculations and is observed with a significance of 5.4$σ$. The WW+WZ production cross section is measured to be $17.7 \pm 3.1$(stat)$\pm 2.4$(sys) pb, in good agreement with standard model predictions. A complimentary measurement using a fit to the dijet mass is also presented.

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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