Recent progress in computing four-loop massive correlators
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
We report about recent progress in computing four-loop massive correlators. The expansion of these correlators in the external momentum leads to vacuum integrals. The calculation of these vacuum integrals can be used to determine Taylor expansion coefficients of the vacuum polarization function and decoupling functions in perturbative Quantum chromodynamics. New results at four-loop order for the lowest Taylor expansion coefficient of the vacuum polarization function and for the decoupling relation are presented.
Keywords
Cite
@article{arxiv.hep-ph/0604187,
title = {Recent progress in computing four-loop massive correlators},
author = {K. G. Chetyrkin and J. H. Kühn and C. Sturm},
journal= {arXiv preprint arXiv:hep-ph/0604187},
year = {2008}
}
Comments
4 pages, talk given at the 12th International Conference on Quantum Chromodynamics, Montpellier, 4-8th July 2005