Year: 2024
Type: conference-paper
Abstract: In this talk, we provided an update on our progress in computing four-loop splitting functions. The computations are based on off-shell operator matrix elements, where under renormalization physical twist-two operators mix with previously unidentified gauge-variant operators. We presented a method to systematically extract the counterterm Feynman rules resulting from those gauge-variant operators. Then we applied the Feynman rules to derive the full three-loop splitting functions as well as certain four-loop splitting functions with specific color structures.
DOI: 10.22323/1.469.0062
Author: Tongzhi Yang
Institution: University of Zurich
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Funder: European Commission
Award: G2124226988
OpenAlex ID: W4405848952