====== TTP19-001 Four-loop quark form factor with quartic fundamental colour factor ====== ^ TTP19-001 Four-loop quark form factor with quartic fundamental colour factor^ |** Roman N. Lee, Alexander V. Smirnov, Vladimir A. Smirnov, Matthias Steinhauser ** | |**JHEP 1902 (2019) 172**| | {{preprints:2019:ttp19-001.pdf|PDF}} [[https://arxiv.org/abs/1901.02898|arXiv]] | | |