𝑞𝑇 Slicing with Multiple Jets
- Author(s)
- Rong-Jun Fu, Rudi Rahn, Ding Yu Shao, Wouter J. Waalewijn, Bin Wu
- Abstract
Modern collider phenomenology requires unprecedented precision for the theoretical predictions, for which slicing techniques provide an essential tool at next-to-next-to-leading order (NNLO) in the strong coupling. The most popular slicing variable is based on the transverse momentum 𝑞𝑇 of a color-singlet final state, but its generalization to final states with jets is known to be very difficult. Here we propose two generalizations of 𝑞𝑇 that can be used for jet processes, providing proof of concept with an NLO slicing for 𝑝𝑝 →2 jets. We present factorization formulas that enable our approach to NNLO, calculate the NNLO collinear-soft function, and demonstrate slicing at this order for 𝑒+𝑒− →2 jets. One of these generalizations of 𝑞𝑇 only applies to planar Born processes, such as 𝑝𝑝 →2 jets, but offers a dramatic simplification of the soft function. We also discuss how our approach can directly be extended to obtain predictions for the fragmentation of hadrons. This presents a promising path for high-precision QCD calculations with multijet final states.
- Organisation(s)
- Particle Physics
- External organisation(s)
- Fudan University, University of Amsterdam (UvA), NIKHEF-Nationaal instituut voor subatomaire fysica, Universidade de Santiago de Compostela (USC)
- Journal
- Physical Review Letters
- Volume
- 135
- No. of pages
- 7
- ISSN
- 0031-9007
- DOI
- https://doi.org/10.1103/htvz-wz1p
- Publication date
- 10-2025
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103012 High energy physics, 103024 Quantum field theory, 103034 Particle physics, 103036 Theoretical physics
- Keywords
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/42dcb8ae-3b24-4815-9291-47dfda9f6008