3 papers
hep-ph2026
Two-loop quarkonium Hamiltonian in annihilation channel
Yukinari Sumino, Takahiro Ueda
We calculate the two-loop quarkonium Hamiltonian in the annihilation channel within the framework of potential-NRQCD effective field theory. The result agrees with the previous cal…
hep-ph2025
Five-loop beta function for gauge theories: computations, results and consequences
F. Herzog, B. Ruijl, T. Ueda +2
At the end of 2016, we computed the five-loop (NLO) contributions to the beta function in perturbative Quantum Chromodynamics (QCD), its generalization to non-Abelian gauge the…
hep-ph2023
Additional moments and x-space approximations of four-loop splitting functions in QCD
S. Moch, B. Ruijl, T. Ueda +2
We have extended our previous computations of the even-N moments of the flavour-singlet four-loop splitting functions to N = 12 for the pure-singlet quark case and N = 10 for all o…