Matter dependence of the four-loop QCD cusp anomalous dimension: from small angles to all angles

Matter dependence of the four-loop QCD cusp anomalous dimension: from small angles to all angles

Abstract We compute the fermionic contributions to the cusp anomalous dimension in QCD at four loops as an expansion for small cusp angle. As a byproduct we also obtain the respective terms of the four-loop HQET wave function anomalous dimension. Our new results at small angles provide stringent tes...

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Bibliographic Details
Main Authors: Robin Brüser, Andrey Grozin, Johannes M. Henn, Maximilian Stahlhofen
Format: Article
Language:English
Published: SpringerOpen 2019-05-01
Series:Journal of High Energy Physics
Subjects:
Effective Field Theories
Perturbative QCD
Scattering Amplitudes
Wilson, ’t Hooft and Polyakov loops
Online Access:http://link.springer.com/article/10.1007/JHEP05(2019)186

Internet

http://link.springer.com/article/10.1007/JHEP05(2019)186

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