arXiv:hep-ph/0210161·v4·High Energy Physics — Phenomenology
Heavy-quarkonium creation and annihilation with O(alpha_s^3 ln(alpha_s)) accuracy
Bernd A. Kniehl🇩🇪 · Alexander A. Penin🇩🇪 · Vladimir A. Smirnov🇷🇺 · Matthias Steinhauser🇩🇪
Abstract
We calculate the O(alpha_s^3 ln(alpha_s)) contributions to the heavy-quarkonium production and annihilation rates. Our result sheds new light on the structure of the high-order perturbative corrections and opens a new perspective for a high-precision theoretical analysis. We also determine the three-loop anomalous dimensions of the nonrelativistic vector and pseudoscalar currents.
Comments: 10 pages (Latex). Eq. (6) corrected, conclusions unchanged