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Four-loop beta function and mass anomalous dimension in dimensional reduction

Harlander, R.V.; Jones, D.R.T.; Kant, P.; Mihaila, L. and Steinhauser, M. (2006) Four-loop beta function and mass anomalous dimension in dimensional reduction. Journal of High Energy Physics (12). Article Number: 024. ISSN 1029-8479

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Cited 8 times in WoS


Within the framework of QCD we compute renormalization constants for the strong coupling and the quark masses to four-loop order. We apply the DR-bar scheme and put special emphasis on the additional couplings which have to be taken into account. This concerns the epsilon-scalar--quark Yukawa coupling as well as the vertex containing four epsilon-scalars. For a supersymmetric Yang Mills theory, we find, in contrast to a previous claim, that the evanescent Yukawa coupling equals the strong coupling constant through three loops as required by supersymmetry.

Item Type:Article
Additional Information:LTH723; arXiv number: arXiv:hep-ph/0610206v1. 13 pages. Published 7 December 2006. Issue: December 2006.
Uncontrolled Keywords:Renormalization Group; QCD; Supersymmetric gauge theory; SUPERSYMMETRY BREAKING; QUARK MASS; REGULARIZATION; RENORMALIZATION; COMPUTATION; YANG
Subjects:Q Science > QC Physics
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences
Publisher's Statement:Copyright © Institute of Physics and IOP Publishing Limited 2008
Related URLs:
ID Code:114
Deposited On:07 Aug 2008 15:52
Last Modified:20 May 2011 19:24

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