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hep-ph2024
A tale of Bethe logarithms: leptonic widths of and Lamb shift
Yu Jia, Jichen Pan
The rare annihilation decays of -wave spin-triplet quarkonia into lepton pair have to proceed via two-photon intermediate state, which are plagued with the infrared divergence s…
hep-ph2022
Three-loop QCD corrections to the decay constant of
Feng Feng, Yu Jia, Zhewen Mo +3
Within the framework of nonrelativistic QCD (NRQCD) factorization, we compute the three-loop QCD corrections to the decay constant of . We reconstruct the analytical expressio…
hep-ph2022★ 2 cited
Complete three-loop QCD corrections to leptonic width of vector quarkonium
Feng Feng, Yu Jia, Zhewen Mo +3
Within the nonrelativistic QCD (NRQCD) factorization framework, we compute the order- perturbative corrections to the leptonic decay of the and with high numerical…