First measurement of the ratio of central-electron to forward-electron W partial cross sections in pp[over] collisions at (square root)s =1.96 TeV.

First measurement of the ratio of central-electron to forward-electron W partial cross sections in pp[over] collisions at (square root)s =1.96 TeV.
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首次测量(平方根)s = 1.96 TeV pp[over] 碰撞中中心电子与正向电子 W 部分截面的比率。

DOI:
10.1103/physrevlett.98.251801
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发表时间:
2007
影响因子:
8.6
通讯作者:
Abulencia A
Abulencia A
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Abulencia A

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我们利用CDF II探测器的正向区域()中识别出的电子,在数据中测量了at。我们测得σ×B=2796±13(stat)-90+95(syst)±162(lum)pB。结合这一结果与以前的CDF测量获得的电子在中心区域(),我们提出的第一个测量的比例的中心电子向前电子partial截面Rexp =0.925±0.006(stat)±0.032(syst),与理论预测的协调理论实验计划QCD(CTEQ)和马丁-罗伯茨-斯特林-索恩(MRST)的部分子分布函数。
We present a measurement ofat, using electrons identified in the forward region () of the CDF II detector, inof data. We measure σ×B=2796±13(stat)-90+95(syst)±162(lum)  pb. Combining this result with a previous CDF measurement obtained using electrons in the central region (), we present the first measurement of the ratio of central-electron to forward-electronpartial cross sections Rexp⁡=0.925±0.006(stat)±0.032(syst), consistent with theoretical predictions using Coordinated Theoretical-Experimental Project on QCD (CTEQ) and Martin-Roberts-Stirling-Thorne (MRST) parton distribution functions.