q T Slicing with Multiple Jets
Year: 2025
Type: article
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 q_{T} 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 q_{T} 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 q_{T} 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.
Source: Physical Review Letters
DOI: 10.1103/htvz-wz1p
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,750
Funders: Royal Society, European Commission, National Natural Science Foundation of China, Ministerio de Ciencia e Innovación, Xunta de Galicia, Centro Singular de Investigación de Galicia, HORIZON EUROPE Framework Programme, European Research Council, European Regional Development Fund, Agencia Estatal de Investigación, HORIZON EUROPE Marie Sklodowska-Curie Actions
Awards: G1086978037, G1138254609, G1199824262, G1218400627, G1622782223, G1639177200, G1840991089, G1869016439, G2262748287, G2538972755, G2866281400, G2928245867, G2996968416, G3019630846, G3030300266, G3233861874, G3480869486, G3643500935, G383969532, G3992400635, G4042783231, G4442677895, G4462967385, G4526231891, G464105488, G4776079577, G4912030886, Soft function Simulation and Evaluation of Real and Virtual Emissions for Non-GLobal observables, G5967599077, G6687049611, G692825579, G7084143925, G7567520714, G8037394432
OpenAlex ID: W4415397639