10.1016/0370-2693(94)90573-8
AVDEEV, L
L
AVDEEV
Fleischer, Jochem
Jochem
Fleischer
MIKHAILOV, S
S
MIKHAILOV
TARASOV, O
O
TARASOV
O(ALPHA-ALPHA(S)(2)) CORRECTION TO THE ELECTROWEAK RHO-PARAMETER
ELSEVIER SCIENCE BV
1994
2010-04-29T13:27:43Z
2018-07-24T12:59:07Z
journal_article
https://pub.uni-bielefeld.de/record/1642592
https://pub.uni-bielefeld.de/record/1642592.json
The three-loop QCD contributions to the vacuum polarization functions of the Z and W bosons at zero momentum are calculated. The top quark is considered to be massive and the other quarks massless. Using these results, we calculate the correction to the electroweak rho parameter. All computations are done in the framework of dimensional regularization as well as regularization by dimensional reduction. We use recurrence relations obtained by the method of integration by parts to reduce all integrals to a small set of master integrals. A comparison of the two-loop and three-loop QCD corrections to the rho parameter is performed.