3-LOOP POLARIZATION FUNCTION AND O(ALPHA(2)(S)) CORRECTIONS TO THE PRODUCTION OF HEAVY QUARKS

Authors
CHETYRKIN KG KUHN JH STEINHAUSER M
Citation
Kg. Chetyrkin et al., 3-LOOP POLARIZATION FUNCTION AND O(ALPHA(2)(S)) CORRECTIONS TO THE PRODUCTION OF HEAVY QUARKS, Nuclear physics. B, 482(1-2), 1996, pp. 213-240
Citations number
46
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. B → ACNP
ISSN journal
05503213
Volume
482
Issue
1-2
Year of publication
1996
Pages
213 - 240
Database
ISI
SICI code
0550-3213(1996)482:1-2<213:3PFAOC>2.0.ZU;2-L
Abstract
The three-loop vacuum polarization function Pi(q(2)) induced by a mass ive quark is calculated. A comprehensive description of the method is presented. From the imaginary part the O(alpha(s)(2)) result for the p roduction of heavy quarks R(s) = sigma(e(+)e(-) --> hadrons)/sigma(e()e(-) --> mu(+)mu(-)) can be extracted. Explicit formulae separated in to the different colour factors are given.