arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1209.0098hep-phhep-ex
收藏

NLO QCD对LHC处多股射流生产的修正,质心能量为sqrt(s)=8 TeV

NLO QCD corrections to multi-jet production at the LHC with a centre-of-mass energy of sqrt(s)=8 TeV

Simon Badger, Benedikt Biedermann, Peter Uwer, Valery Yundin

摘要:

在无质量QCD中,我们以次领先阶精度研究了强子碰撞中三喷注和四喷注的产生。我们交叉检查先前获得的结果由BlackHat合作的LHC的质量中心能量为sqrt(S)=7 TeV,并提出了新的结果在8 TeV的LHC运行。我们发现大的负非线性光学修正减少了约40- 50%的领导阶截面。此外,我们观察到的规模不确定性的重要减少。除了截面,我们还提出了结果的微分分布。在计算中使用的动力学重整化/因式分解尺度导致一个非常稳定的K因子。这里给出的结果是用NJet软件包获得的,NJet软件包是一个公开可用的库,用于评估无质量QCD中的单圈振幅。

英文摘要:

We study three and four jet production in hadronic collisions at next-to-leading order accuracy in massless QCD. We cross check results previously obtained by the BlackHat collaboration for the LHC with a centre-of-mass energy of sqrt(s)=7 TeV and present new results for the LHC operating at 8 TeV. We find large negative NLO corrections reducing the leading-order cross sections by about 40-50%. Furthermore we observe an important reduction of the scale uncertainty. In addition to the cross sections we also present results for differential distributions. The dynamical renormalization/factorization scale used in the calculation leads to a remarkably stable K-factor. The results presented here were obtained with the NJet package, a publicly available library for the evaluation of one-loop amplitudes in massless QCD.

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。

↑