论文标题
$ \ mathrm {z} $ - 玻色子生产的预测与$ \ mathrm {b} $ - jet at $ \ mathcal {o}（α_s^3）$
Predictions for $\mathrm{Z}$-boson production in association with a $\mathrm{b}$-jet at $\mathcal{O}(α_s^3)$
论文作者
论文摘要
为生产$ \ mathrm {z} $ - 玻色子和$ \ mathrm {b} $ - 在扰动QCD的框架内的强子 - 哈德隆碰撞的生产提供了精确的预测。为了获得这些预测，我们执行了公共散射过程的第一个计算，该过程涉及在无质量QCD中近代到临时订单的直接生产，并扩展技术，并扩展技术以说明有限重夸克质量效应的影响。将预测与以$ \ mathrm {pp} $碰撞获得的CMS数据进行比较，以$ 8〜 \ mathrm {tev} $的质量能量碰撞，这是该过程中LHC运行i的最精确数据，在此过程中可以很好地描述数据。为了允许这种比较，我们对数据进行了展开，这克服了一个长期存在的问题，即喷气味的实验和理论定义是不兼容的。
Precise predictions are provided for the production of a $\mathrm{Z}$-boson and a $\mathrm{b}$-jet in hadron-hadron collisions within the framework of perturbative QCD, at $\mathcal{O}(α_s^3)$. To obtain these predictions we perform the first calculation of a hadronic scattering process involving the direct production of a flavoured-jet at next-to-next-to-leading order accuracy in massless QCD, and extend techniques to also account for the impact of finite heavy-quark mass effects. The predictions are compared to CMS data obtained in $\mathrm{pp}$ collisions at a centre-of-mass energy of $8~\mathrm{TeV}$, which are the most precise data from Run I of the LHC for this process, where a good description of the data is achieved. To allow this comparison we have performed an unfolding of the data, which overcomes the long-standing issue that the experimental and theoretical definitions of jet flavour are incompatible.
