HEAVY-QUARK CURRENT CORRELATORS TO O(ALPHA(2)(S))

Authors
CHETYRKIN KG KUHN JH STEINHAUSER M
Citation
Kg. Chetyrkin et al., HEAVY-QUARK CURRENT CORRELATORS TO O(ALPHA(2)(S)), Nuclear physics. B, 505(1-2), 1997, pp. 40-64
Citations number
44
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. B → ACNP
ISSN journal
05503213
Volume
505
Issue
1-2
Year of publication
1997
Pages
40 - 64
Database
ISI
SICI code
0550-3213(1997)505:1-2<40:HCCTO>2.0.ZU;2-P
Abstract
In this paper the three-loop polarization functions II(q(2)) are calcu lated for the cases of an external vector, axial-vector, scalar or pse udo-scalar current Results are presented for the imaginary part which directly leads to the cross section sigma(e(+)e(-) --> Z --> hadrons) and to the Higgs decay rates, respectively. (C) 1997 Elsevier Science B.V.