Heavy-quark QCD vacuum polarisation function: analytical results at four loops

The first two moments of the heavy-quark vacuum polarisation function at four loops in quantum chromo-dynamics are found in fully analytical form by evaluating the missing massive four-loop tadpole master integrals.

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Bibliographic Details
Published in:Physics letters. B 2006-11, Vol.642 (1-2), p.68-71
Main Authors: Kniehl, Bernd A., Kotikov, Anatoly V.
Format: Article
Language:English
Subjects:
[formula omitted] interactions
Exact sciences and technology
Hadron production
Multi-loop calculations
Nuclear physics
Physics
Quantum chromo-dynamics
The physics of elementary particles and fields
Total cross sections
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Description
Summary:The first two moments of the heavy-quark vacuum polarisation function at four loops in quantum chromo-dynamics are found in fully analytical form by evaluating the missing massive four-loop tadpole master integrals.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2006.09.008