Two-Loop DGLAP Evolution from Light Cone Perturbation Theory

by Mikko Seppäla (University of Helsinki)

Saturday 12 Dec 2026, 13:00 → 14:00 Europe/Helsinki

Light Cone Perturbation Theory (LCPT) is a widely applicable tool in high-energy and hadronic physics, providing a clear physical picture of partons as degrees of freedom. This physical clarity is counteracted by calculational complexity, which has so far limited state-of-the-art precision in LCPT to the one-loop level. In this talk, I will present a rederivation of the next-to-leading-order DGLAP evolution of parton distributions starting from LCPT. This derivation provides a systematic treatment of the evolution in terms of light cone wave functions, and constitutes the first-ever two-loop gauge theory calculation performed in LCPT. Our results agree with the well-established results from covariant perturbation theory, demonstrating the validity of LCPT at higher orders.