Triple-real contribution to the quark beam function in QCD at next-to-next-to-next-to-leading order

Melnikov, K. (0000 0001 0075 5874, grid.7892.4, Institute for Theoretical Particle Physics, KIT, Karlsruhe, Germany) ; Rietkerk, R. (0000 0001 0075 5874, grid.7892.4, Institute for Theoretical Particle Physics, KIT, Karlsruhe, Germany) ; Tancredi, L. (0000 0001 2156 142X, grid.9132.9, Theoretical Physics Department, CERN, 1211, Geneva 23, Switzerland) ; Wever, C. (0000000123222966, grid.6936.a, Physik-Department T31, Technische Universität München, James-Franck-Straße 1, D-85748, Garching, Germany)

12 June 2019

Abstract: We compute the three-loop master integrals required for the calculation of the triple-real contribution to the N 3 LO quark beam function due to the splitting of a quark into a virtual quark and three collinear gluons, q → q * + ggg . This provides an important ingredient for the calculation of the leading-color contribution to the quark beam function at N 3 LO.


Published in: JHEP 1906 (2019) 033 DOI: 10.1007/JHEP06(2019)033
arXiv: 1904.02433
License: CC-BY-4.0



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