论文标题
nnlo b-fragmentation及其适用于$ t \ bar t $生产和衰减在LHC
NNLO B-fragmentation fits and their application to $t\bar t$ production and decay at the LHC
论文作者
论文摘要
在这项工作中，我们得出了三组非扰动片段化功能，具有不确定性，以$ b $ -HADRONS，$ J/ψ$和MUONS和MUONS，由半蛋白质$ B $衰减产生。这三组套件均具有近代到接头的订单准确性，并包括临时到隔离的对数软gluon重新召集。这些新集合的新颖功能是，它们与我们的形式主义完全一致，以换成$ b $，$ j/ψ$或$μ$的最终状态的近代到接头订单（NNLO）计算。我们采用了这项工作中得出的分裂功能，以在LHC的$ t \ bar t $事件中对此类最终状态的最新状态进行预测。特别重点放在对顶部夸克质量敏感的观察物上。目前的工作为许多LHC应用程序打开了大门，例如开放$ B $生产或与玻色子有关的$ B $生产。
In this work we derive three sets of non-perturbative fragmentation functions, with uncertainties, for $B$-hadrons, $J/ψ$'s and muons resulting from semileptonic $B$ decays. All three sets are with next-to-next-to leading order accuracy and include next-to-next-to leading logarithmic soft gluon resummation. The novel feature of these new sets is that they are fully consistent with our formalism for next-to-next-to leading order (NNLO) calculations for final states with identified $B$, $J/ψ$ or a $μ$. We employ the fragmentation functions derived in this work to make state of the art predictions for such final states in $t\bar t$ events at the LHC. A special emphasis is placed on observables sensitive to the top quark mass. The present work opens the door for many LHC applications, like, open $B$ production or $B$ production in association with bosons.
