TTP22-067 Beam functions for $N$-jettiness at N$^3$LO in perturbative QCD

TTP22-067 Beam functions for $N$-jettiness at N$^3$LO in perturbative QCD
Daniel Baranowski, Arnd Behring, Kirill Melnikov, Lorenzo Tancredi, Christopher Wever
JHEP 02 (2023) 073
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