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
中科院分区:
文献类型:
--
作者:
Abulencia A
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.