Journal article
Computation of form factors in massless QCD with finite master integrals
- Abstract:
- We present the bare one-, two-, and three-loop form factors in massless quantum chromodynamics as linear combinations of finite master integrals. Using symbolic integration, we compute their ε expansions and thereby reproduce all known results with an independent method. Remarkably, in our finite basis, only integrals with a less-than-maximal number of propagators contribute to the cusp anomalous dimensions. We report on indications of this phenomenon at four loops, including the result for a finite, irreducible, twelve-propagator form factor integral. Together with this article, we provide our automated software setup for the computation of finite master integrals.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, pdf, 541.3KB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevD.93.125014
Authors
+ European Research Council
More from this funder
- Funding agency for:
- Panzer, E
- Grant:
- 647356
- 257638
- Publisher:
- American Physical Society
- Journal:
- Physical Review D More from this journal
- Volume:
- 93
- Issue:
- 12
- Pages:
- 125014
- Publication date:
- 2016-06-10
- DOI:
- EISSN:
-
2470-0029
- ISSN:
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2470-0010
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2016
- Notes:
- © 2016 American Physical Society. This is the accepted manuscript version of the article. The final version is available online from American Physical Society at: https://doi.org/10.1103/PhysRevD.93.125014
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