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arXiv 0901.2169hep-ex
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在$\sqrt{s} = 1.96$ TeV上直接测量PDMATHAAA AB碰撞中$W$产生电荷的不对称性

Direct Measurement of the $W$ Production Charge Asymmetry in $\ppbar$ Collisions at $\sqrt{s} = 1.96$ TeV

The CDF Collaboration, T. Aaltonen

摘要:

我们提出的第一个直接测量的$W$生产的电荷不对称性作为$W$玻色子快度$\yW$的函数在$\ppbar$碰撞在$\sqrt{s} = 1.96$ $\TeV$。我们使用一个样本的$\wenu$事件的数据从1 $\ifb$的综合光度收集使用CDF II探测器。在区域$|\yW| <$ 3.0中,这种测量能够比以前的测量更直接地约束质子中的上夸克和下夸克动量分布的比率,所述测量是带电轻子赝快度的函数。

英文摘要:

We present the first direct measurement of the $W$ production charge asymmetry as a function of the $W$ boson rapidity $\yW$ in $\ppbar$ collisions at $\sqrt{s} = 1.96$ $\TeV$. We use a sample of $\wenu$ events in data from 1 $\ifb$ of integrated luminosity collected using the CDF II detector. In the region $|\yW| <$ 3.0, this measurement is capable of constraining the ratio of up and down quark momentum distributions in the proton more directly than in previous measurements of the asymmetry that are a function of the charged-lepton pseudorapidity.

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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