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arXiv 0912.0715hep-ex
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在$p\bar{p}$碰撞中寻找衰变为WZ玻色子对的共振

Search for a resonance decaying into WZ boson pairs in $p\bar{p}$ collisions

The D0 Collaboration, V. M. Abazov

摘要:

我们提出的第一个搜索的带电共振$W^\prime$衰减到一个WZ玻色子对使用4.1 FB $^{-1}$的积分亮度收集与D0探测器在费米实验室Tevatron $p\bar{p}$对撞机。WZ对通过衰变重建为三个带电轻子($\ell=e,μ$)。共观察到9个数据事件,与背景预测吻合良好。我们设定了95%的C. L。W 'WZ偶联和W'产生截面的极限乘以分支分数。我们还排除了W'的质量在188和520 GeV之间的一个简单的扩展的标准模型,并设置了最严格的限制,以低尺度的Technicolor模型。

英文摘要:

We present the first search for an electrically charged resonance $W^\prime$ decaying to a WZ boson pair using 4.1 fb$^{-1}$ of integrated luminosity collected with the D0 detector at the Fermilab Tevatron $p\bar{p}$ collider. The WZ pairs are reconstructed through their decays into three charged leptons ($\ell=e,μ$). A total of 9 data events is observed in good agreement with the background prediction. We set 95% C.L. limits on the W'WZ coupling and on the W' production cross section multiplied by the branching fractions. We also exclude W' masses between 188 and 520 GeV within a simple extension of the standard model and set the most restrictive limits to date on low-scale technicolor models.

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