标题： NNLO+PS匹配的GENEVA横向可观测量的重求和 显示英文标题

标题： Resumming transverse observables for NNLO+PS matching in GENEVA

摘要： 我们研究了使用高阶重整化来处理横观可观测量，以在GENEVA框架内实现NNLO+PS匹配。 具体来说，我们将利用软-共线有效理论（SCET）通过N次$^3$LL色单态产生重整化嵌入到GENEVA框架中的SCETlib库中获得的色单态产生的$q_T$重整化。 我们还首次研究了广义$N$喷流变量在部分子 showers 匹配中的应用，并实现了定义为横向度规的一次喷流变量的重整化，精度达到NLL$'$。 作为一个案例研究，我们利用这些重整化计算构建了一个用于重夸克湮灭（初始态为底夸克或charm夸克）产生希格斯玻色子的GENEVA NNLO+PS生成器。 横观度规的使用促进了与按横向动量排序的showers的匹配，并为未来可能扩展此方法至伴随最终态喷射子的色单态产生打开了大门。 显示英文摘要

摘要： We study the use of higher-order resummation for transverse observables to achieve NNLO+PS matching within the GENEVA framework. In particular, we embed $q_T$ resummation for colour-singlet production at N$^3$LL obtained via soft-collinear effective theory and implemented in the library SCETlib within GENEVA. We also study for the first time the use of the generalised $N$-jettiness variable in parton shower matching, and achieve the resummation of the one-jettiness defined with transverse measures up to NLL$'$ accuracy. As a case study, we use these resummed calculations to construct a GENEVA NNLO+PS generator for Higgs boson production in heavy-quark annihilation (with beauty or charm-quarks in the initial state). The use of transverse measures facilitates the matching to showers ordered in transverse momentum, and opens the door to possible future extensions of this approach to the production of colour singlets in association with final-state jets.