TY - JOUR
T1 - Three-loop helicity amplitudes for quark-gluon scattering in QCD
AU - Caola, Fabrizio
AU - Chakraborty, Amlan
AU - Gambuti, Giulio
AU - von Manteuffel, Andreas
AU - Tancredi, Lorenzo
N1 - Publisher Copyright:
© 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - We compute the three-loop helicity amplitudes for qq¯ → gg and its crossed partonic channels, in massless QCD. Our analytical results provide a non-trivial check of the color quadrupole contribution to the infrared poles for external states in different color representations. At high energies, the qg → qg amplitude shows the predicted factorized form from Regge theory and confirms previous results for the gluon Regge trajectory extracted from qq′ → qq′ and gg → gg scattering.
AB - We compute the three-loop helicity amplitudes for qq¯ → gg and its crossed partonic channels, in massless QCD. Our analytical results provide a non-trivial check of the color quadrupole contribution to the infrared poles for external states in different color representations. At high energies, the qg → qg amplitude shows the predicted factorized form from Regge theory and confirms previous results for the gluon Regge trajectory extracted from qq′ → qq′ and gg → gg scattering.
KW - Higher-Order Perturbative Calculations
KW - Scattering Amplitudes
KW - Specific QCD Phenomenology
UR - http://www.scopus.com/inward/record.url?scp=85144187117&partnerID=8YFLogxK
U2 - 10.1007/JHEP12(2022)082
DO - 10.1007/JHEP12(2022)082
M3 - Article
AN - SCOPUS:85144187117
SN - 1126-6708
VL - 2022
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 12
M1 - 82
ER -