TTP20-024 Matching the heavy-quark fields in QCD and HQET at four loops
TTP20-024 Matching the heavy-quark fields in QCD and HQET at four loops
Andrey G. Grozin, Peter Marquard, Alexander V. Smirnov, Vladimir A. Smirnov,Matthias Steinhauser
Phys. Rev. D 102, 054008 (2020)
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arXiv