Reducing theoretical uncertainties for exclusive Higgs-boson plus one-jet production at the LHC
Reducing theoretical uncertainties for exclusive Higgs-boson plus one-jet production at the LHC
复制标题
DOI：
10.1103/physrevd.87.094027
复制
发表时间：
2013-03
影响因子：
5
通讯作者：
Xiao-Hai Liu;F. Petriello
中科院分区：
文献类型：
--
作者：
Xiao-Hai Liu;F. Petriello
我们恢复一类大Sudakov粒子影响希格斯玻色子生产的独家单喷仓在大型强子对撞机。我们通过计算这个过程的完整的单回路软函数来扩展以前的结果，该过程扩展了重新计算的准确性，以包括QCD耦合常数中每个阶的领先的三个对数校正。我们将这一结果与下一个领先阶截面相匹配，并提出了一个详细的数值研究，假设现实的LHC削减。仔细注意的匹配过程中，并引起残余规模变化的理论不确定性。我们发现，匹配的NLL '+ NLO截面具有显着小于固定阶结果的不确定性，并可以用来减轻理论误差阻碍目前在LHC的希格斯分析。
We resum a class of large Sudakov logarithms affecting Higgs boson production in the exclusive one-jet bin at the LHC. We extend previous results by calculating the full one-loop soft function for this process, which extends the accuracy of the resummation to include the leading three logarithmic corrections at each order in the QCD coupling constant. We match this result to the next-to-leading order cross section and present a detailed numerical study assuming realistic LHC cuts. Careful attention is paid to the matching procedure, and to the theoretical uncertainties induced by residual scale variation. We find that the matched NLL'+ NLO cross section has significantly smaller uncertainties than the fixed-order result, and can be used to alleviate the theoretical errors hindering current Higgs analyses at the LHC.