arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1301.4698hep-ex
收藏

在sqrt(s)= 8 TeV时pp碰撞中W+W-和ZZ产生截面的测量

Measurement of W+W- and ZZ production cross sections in pp collisions at sqrt(s) = 8 TeV

CMS Collaboration

摘要:

W+W-和ZZ生产截面测量质子-质子碰撞在sqrt(s)= 8 TeV的CMS实验在LHC的数据样本对应于一个积分亮度高达5.3毫微微电子能。测量在轻子衰变模式W+W-到l' nu l“nu和ZZ到2l 2l”中进行,其中l = e,mu和l'(l“)= e,mu,tau。测得的截面σ(pp至W+W-)= 69.9 +/- 2.8(统计)+/- 5.6(系统)+/- 3.1(流明)pb和sigma(pp至ZZ)= 8.4 +/- 1.0(统计)+/- 0.7(系统)+/- 0.4(流明)pb,与标准模型的预测一致。这是在sqrt(s)= 8 TeV时对双玻色子产生截面的首次测量。

英文摘要:

The W+W- and ZZ production cross sections are measured in proton-proton collisions at sqrt(s) = 8 TeV with the CMS experiment at the LHC in data samples corresponding to an integrated luminosity of up to 5.3 inverse femtobarns. The measurements are performed in the leptonic decay modes W+W- to l' nu l'' nu and ZZ to 2l 2l', where l = e, mu and l'(l'') = e, mu, tau. The measured cross sections sigma(pp to W+W-) = 69.9 +/- 2.8 (stat.) +/- 5.6 (syst.) +/- 3.1 (lumi.) pb and sigma(pp to ZZ) = 8.4 +/- 1.0 (stat.) +/- 0.7 (syst.) +/- 0.4 (lumi.) pb, for both Z bosons produced in the mass region 60 < m[Z] < 120 GeV, are consistent with standard model predictions. These are the first measurements of the diboson production cross sections at sqrt(s) = 8 TeV.

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。

↑