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arXiv 0905.4714hep-ex
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强子末态矢量玻色子对在Tevatron对撞机上的首次观测

First Observation of Vector Boson Pairs in a Hadronic Final State at the Tevatron Collider

CDF Collaboration, T. Aaltonen

摘要:

本文首次在强子碰撞中观测到了矢量玻色子对(VV,V = W,Z)的电弱产生,其中一个玻色子衰变到双射末态。这些数据对应于费米实验室Tevatron的CDDII探测器在sqrt(s)= 1.96 TeV时收集的ppbar碰撞的积分亮度的3.5个反飞秒。我们观察到1516 +/-239(stat)+/-144(syst)diboson候选事件,并测量了18.0 +/-2.8(stat)+/-2.4(syst)+/-1.1(lumi)pb的截面σ(ppbar-> VV + X),与标准模型的预期一致。

英文摘要:

We present the first observation in hadronic collisions of the electroweak production of vector boson pairs (VV, V=W,Z) where one boson decays to a dijet final state . The data correspond to 3.5 inverse femtobarns of integrated luminosity of ppbar collisions at sqrt(s)=1.96 TeV collected by the CDFII detector at the Fermilab Tevatron. We observe 1516+/-239(stat)+/-144(syst) diboson candidate events and measure a cross section sigma(ppbar->VV+X) of 18.0+/-2.8(stat)+/-2.4(syst)+/-1.1(lumi) pb, in agreement with the expectations of the standard model.

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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