arXiv:2111.14571·v2·High Energy Physics — Phenomenology
Correlators of heavy-light quark currents in HQET: OPE at three loops
K. G. Chetyrkin🇩🇪 · A. G. Grozin🇷🇺
Abstract
Coefficient functions of the operator product expansion of correlators of HQET heavy--light quark currents are calculated up operators of dimension 4 up to to 3 loops.
Comments: 20 pages, 3 figures. v2: tiny text improvements