Department
Physics
Document Type
Article
Publication Date
2-18-2016
Abstract
I present analytical expressions for the cusp anomalous dimension in QCD through three loops in terms of elementary functions and ordinary polylogarithms. I observe interesting relations between the results at different loops and provide a conjecture for the n-loop cusp anomalous dimension in terms of the lower-loop results. I also present numerical results and simple approximate formulas for the cusp anomalous dimension relevant to top-quark production.
Journal Title
International Journal of Modern Physics A
Journal ISSN
1793-656X
Volume
31
Digital Object Identifier (DOI)
10.1142/S0217751X16500767