VII International Conference “Models in Quantum Field Theory” (MQFT-2022)

Four-loop QCD cusp anomalous dimension at small angle

Not scheduled

25m

Session Talk Section B: Quantum field theory methods in elementary particle physics Section B

Speaker

Andrey Pikelner (BLTP JINR)

Description

In my talk, I will report on the recent four-loop calculation of the small cusp angle expansion of the cusp anomalous dimension in QCD and the heavy quark field anomalous dimension in HQET. Also, I will provide details on the calculation of four-loop integrals containing eikonal propagators with the method of difference equations in the space-time dimension.