AI 中文总结
研究强子-强子碰撞中与矢量或希格斯玻色子关联的最高横向动量喷注不变质量分布，用剑桥/亚琛算法定义喷注，发现该算法在固定阶比其他算法更有效抑制非全局对数，所有阶表现与$k_t$算法相当，有限$N_c$修正保持在百分之几水平。
AI 中文摘要
我们给出了强子-强子碰撞中一个一般非全局QCD可观测量到四圈阶的固定阶微扰计算。具体而言，我们研究了与矢量玻色子或希格斯玻色子关联产生的最高横向动量喷注的不变质量分布，其中喷注使用剑桥/亚琛顺序重组算法定义。这项工作是一系列研究不同碰撞环境中各种喷注算法对非全局可观测量微扰结构影响的论文的一部分。我们发现，在固定阶，剑桥/亚琛算法比反$k_t$和$k_t$算法更有效地抑制大的非全局对数，而在所有阶它与$k_t$算法表现相当。此外，对所有阶重整化形状因子的比较表明，有限$N_c$修正保持在百分之几的水平，与先前结果一致。
英文摘要
We present fixed-order perturbative calculations up to four-loop order for a generic non-global QCD observable in hadron-hadron collisions. Specifically, we study the invariant-mass distribution of the highest-$p_t$ jet produced in association with a vector boson or a Higgs boson, where jets are defined using the Cambridge/Aachen sequential recombination algorithm. This work is part of a series of papers~\cite{Khelifa-Kerfa:2015mma, Khelifa-Kerfa:2024hwx, Khelifa-Kerfa:2024dut, Khelifa-Kerfa:2025cdn, Khelifa-Kerfa:2024udm, Khelifa-Kerfa:2025jev} examining the impact of various jet algorithms on the perturbative structure of non-global observables across different collision environments. We find that at fixed order the Cambridge/Aachen algorithm suppresses the large non-global logarithms more effectively than the anti-$k_t$ and $k_t$ algorithms, while at all orders it performs comparably to the $k_t$ algorithm. Furthermore, comparisons of all-orders resummed form factors reveal that finite-$N_c$ corrections remain at the percent level, consistent with previous findings.
Comments15 pages, 10 figures
