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arXiv · hep-ph/9708372

Non-Abelian Dipole Radiation and the Heavy Quark Expansion

Andrzej Czarnecki·Kirill Melnikov·Nikolaj Uraltsev
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Abstract

Dipole radiation in QCD is derived to the second order in $α_s$. A power-like evolution of the spin-singlet heavy quark operators is obtained to the same accuracy. In particular, ${\cal O}(α_s^2)$ relation between a short-distance low-scale running heavy quark mass and the $\barMS$ mass is given. We discuss the properties of the effective QCD coupling $\aw(E)$ which governs the dipole radiation. This coupling is advantageous for heavy quark physics.

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Andrzej Czarnecki, Kirill Melnikov, Nikolaj Uraltsev. 1997-08-15. Non-Abelian Dipole Radiation and the Heavy Quark Expansion. https://doi.org/10.1103/physrevlett.80.3189

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