Speaker
Tongzhi Yang
(University of Zurich)
Description
Splitting functions, also known as DGLAP evolution kernel, govern the scale evolution of parton distribution functions. One of the most efficient methods for calculating these splitting functions is by utilizing off-shell operator matrix elements. However, in the singlet sector, complications arise as physical operators become intertwined with non-physical operators, leading to intricate renormalization challenges.
In this talk, we systematically address these renormalization issues and present our latest results with certain color structures for four-loop splitting functions in QCD.
Primary author
Tongzhi Yang
(University of Zurich)
Co-authors
Prof.
Andreas von Manteuffel
Prof.
Thomas Gehrmann
Dr
Vasily Sotnikov
