Partonic distributions for large x and renormalization of Wilson loop
作者： G.P. Korchemsky , G. Marchesini
DOI: 10.1016/0550-3213(93)90167-N
关键词: Cusp (singularity) 、 Physics 、 Phase space 、 Multiplicative function 、 Wilson loop 、 Renormalization 、 Function (mathematics) 、 Quantum electrodynamics 、 Renormalization group 、 Mathematical physics 、 Boundary (topology)
摘要: Abstract We discuss the relation between partonic distributions near phase space boundary and Wilson loop expectation values calculated along paths partially lying on light-cone. Due to additional light-cone singularities, multiplicative renormalizability for these is lost. Nevertheless we establish renormalization group equation light-like loops show that it equivalent evolution physical distributions. By performing a two-loop calculation verify properties universal form of splitting function large x originates from cusp anomalous dimension loops.
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