Advanced search    

Search: authors:"Andrey G. Grozin"

2 papers found.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

Heavy-quark form factors in the large \(\beta _0\) limit

Heavy-quark form factors are calculated at \(\beta _0 \alpha _s \sim 1\) to all orders in \(\alpha _s\) at the first order in \(1/\beta _0\). Using the inversion relation generalized to vertex functions, we reduce the massive on-shell Feynman integral to the HQET one. This HQET vertex integral can be expressed via a \({}_2F_1\) function; the nth term of its \(\varepsilon \) ...

The three-loop cusp anomalous dimension in QCD and its supersymmetric extensions

We present the details of the analytic calculation of the three-loop angle-dependent cusp anomalous dimension in QCD and its supersymmetric extensions, including the maximally supersymmetric \( \mathcal{N}=4 \) super Yang-Mills theory. The three-loop result in the latter theory is new and confirms a conjecture made in our previous paper. We study various physical limits of the cusp ...