在 CDF 实验中，在 sqrt[s] = 1.96 TeV 下测量 ZZ 产生的轻子末态。
Measurement of ZZ production in leptonic final states at sqrt[s] of 1.96 TeV at CDF.
机构信息
Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland.
出版信息
Phys Rev Lett. 2012 Mar 9;108(10):101801. doi: 10.1103/PhysRevLett.108.101801. Epub 2012 Mar 7.
In this Letter, we present a precise measurement of the total ZZ production cross section in pp collisions at sqrt[s]=1.96 TeV, using data collected with the CDF II detector corresponding to an integrated luminosity of approximately 6 fb(-1). The result is obtained by combining separate measurements in the four-charged (ℓℓℓ' ℓ') and two-charged-lepton and two-neutral-lepton (ℓℓνν) decay modes of the Z boson pair. The combined measured cross section for pp → ZZ is 1.64(-0.38)(+0.44) pb. This is the most precise measurement of the ZZ production cross section in 1.96 TeV pp collisions to date.
在这封信件中，我们展示了在 sqrt[s]=1.96 TeV 的 pp 碰撞中 ZZ 总产生截面的精确测量结果，该结果使用 CDF II 探测器收集的数据得出，这些数据对应于约 6 fb(-1) 的积分亮度。该结果是通过结合 Z 玻色子对的四带电（ℓℓℓ' ℓ'）和两带电轻子和两中性轻子（ℓℓνν）衰变模式的单独测量得出的。对 pp → ZZ 的组合测量截面为 1.64(-0.38)(+0.44) pb。这是目前在 1.96 TeV pp 碰撞中对 ZZ 产生截面进行的最精确测量。
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