夸克态双圈修正到轻子衰变
高能物理 - 唯象学
2008-11-26 v1
摘要
Applying asymptotic expansions at threshold, we compute the two-loop QCD correction to the short-distance coefficient that governs the leptonic decay of a S-wave quarkonium state and discuss its impact on the relation between the quarkonium non-relativistic wave function at the origin and the quarkonium decay constant in full QCD.
引用
@article{arxiv.hep-ph/9712302,
title = {Two-loop Correction to the Leptonic Decay of Quarkonium},
author = {M. Beneke and A. Signer and V. A. Smirnov},
journal= {arXiv preprint arXiv:hep-ph/9712302},
year = {2008}
}
备注
7 pages, LaTeX, 1 figure included via epsf.sty