论文标题
与$ h \ to b \ bar {b} $ decay通过nnlo qcd的$ h \ wh $ wh $生产中的底部夸克质量效应
Bottom quark mass effects in associated $WH$ production with $H \to b\bar{b}$ decay through NNLO QCD
论文作者
论文摘要
我们向LHC上的$ W $ BOSON联合使用NNLO QCD校正的Higgs Boson进行了计算，然后将Higgs Boson的衰变降低到$ b \ bar {b} $对。与以前对同一过程的NNLO QCD研究的不同，我们将$ b $ quarks视为巨大的。使用大型$ b $ Quarks合作的一个重要优点是，它使使用风味喷气算法不必要，并允许我们使用传统的喷气算法来定义$ b $ $ $ jets。我们将相关$ WH（b \ bar {b}）$生产的NNLO QCD描述与大量$ B $ quarks进行了比较，也将它们与Parton Showers提供的结果对比。我们发现$ {\ cal o}（5 \％）$在使用无数$ b $ quarks计算的基准横截面中的差异。我们还观察到，在选定的运动学分布中可能会出现无质量和大规模结果以及固定阶和帕顿降低结果之间的更大差异。
We present a computation of NNLO QCD corrections to the production of a Higgs boson in association with a $W$ boson at the LHC followed by the decay of the Higgs boson to a $b\bar{b}$ pair. At variance with previous NNLO QCD studies of the same process, we treat $b$ quarks as massive. An important advantage of working with massive $b$ quarks is that it makes the use of flavor jet algorithms unnecessary and allows us to employ conventional jet algorithms to define $b$ jets. We compare NNLO QCD descriptions of the associated $WH(b\bar{b})$ production with massive and massless $b$ quarks and also contrast them with the results provided by parton showers. We find ${\cal O}(5\%)$ differences in fiducial cross sections computed with massless and massive $b$ quarks. We also observe that much larger differences between massless and massive results, as well as between fixed-order and parton-shower results, can arise in selected kinematic distributions.
