Triple real-emission contribution to the zero-jettiness soft function at N3LO in QCD

被引：0

作者：

Daniel Baranowski ^{[1
]}

Maximilian Delto ^{[2
]}

Kirill Melnikov ^{[4
]}

Andrey Pikelner ^{[3
]}

Chen-Yu Wang ^{[3
]}

机构：

[1] Universität Zürich,Physik Institut

[2] Technical University of Munich,Physics Department

[3] Karlsruhe Institute of Technology,Institute for Theoretical Particle Physics (TTP)

[4] Max-Planck Institute for Physics,undefined

来源：

Journal of High Energy Physics | / 2025卷 / 4期

关键词：

Factorization; Renormalization Group; Higher-Order Perturbative Calculations;

D O I：

10.1007/JHEP04(2025)084

中图分类号：

学科分类号：

摘要：

Recently, we have presented the result for the zero-jettiness soft function at next-to-next-to-next-to-leading order (N3LO) in perturbative QCD [1], without providing technical details of the calculation. The goal of this paper is to describe the most important element of that computation, the triple real-emission contribution. We present a detailed discussion of the many technical aspects of the calculation, for which a number of methodological innovations was required. Although some elements of the calculation were discussed earlier [2–6], this paper is intended to provide a complete summary of the methods used in the computation of the triple real-emission contribution to the soft function.

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