18-22 March 2019
Mainz Institute for Theoretical Physics, Johannes Gutenberg University
Europe/Berlin timezone

Four-loop quark form factor with quartic fundamental colour factor

18 Mar 2019, 14:00
30m
02.430 (Mainz Institute for Theoretical Physics, Johannes Gutenberg University)

02.430

Mainz Institute for Theoretical Physics, Johannes Gutenberg University

Staudingerweg 9 / 2nd floor, 55128 Mainz

Speaker

Dr Vladimir Smirnov (Moscow State University)

Description

An analytical result for the four-loop QCD corrections for the colour structure (dabcdF)^2 to the massless non-singlet quark form factor is obtained.
The evaluation involves non-trivial non-planar integrals diagrams with master integrals in the top sector. To evaluate the master integrals second mass scale is introduced and the corresponding differential equations are solved with respect to the ratio of the two scales. Analytical results for the cusp and collinear anomalous dimensions, and the finite part of the form factor are presented.

Primary author

Dr Vladimir Smirnov (Moscow State University)

Presentation Materials