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arXiv 1206.0433hep-ex
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在sqrt(s)= 7 TeV的pp碰撞中搜索衰减到WZ的W'或techni-rho

Search for a W' or techni-rho decaying into WZ in pp collisions at sqrt(s) = 7 TeV

CMS Collaboration

摘要:

在pp碰撞中,在sqrt(s)= 7 TeV的奇异粒子通过WZ衰变到最终状态的电子和μ子进行搜索。数据样本对应于大约5个逆毫微微巴恩斯的积分亮度。在预期标准模型背景以上的数据中未观察到显著过量。在序列标准模型描述的W'玻色子的产生截面和W' WZ耦合上设定了95%置信水平的上界。质量低于1143 GeV的W'玻色子被排除在外。在低比例彩色模型的背景下,根据一系列关于模型参数的假设,也设定了限制。

英文摘要:

A search is performed in pp collisions at sqrt(s) = 7 TeV for exotic particles decaying via WZ to final states with electrons and muons. The data sample corresponds to an integrated luminosity of approximately 5 inverse femtobarns. No significant excess is observed in the data above the expected standard model background. Upper bounds at 95% confidence level are set on the production cross section of the W' boson described by the sequential standard model and on the W'WZ coupling. W' bosons with masses below 1143 GeV are excluded. Limits are also set in the context of low-scale technicolor models, under a range of assumptions concerning the model parameters.

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