# Institute for Particle Physics Phenomenology

### Seminar Details:

Title: Cwebs beyond three loops in multiparton amplitudes UK Pal, Sourav Falcioni, Giulio 2021-05-26 13:00:00 www.ph.ed.ac.uk https://ed-ac-uk.zoom.us/j/86033571914 Passcode: WP41FL8z

### Seminar Description:

Correlators of Wilson line operators are known to exponentiate in the non-abelian gauge theory and their logarithms can be arranged in terms of a collection of Feynman diagrams known as webs. Webs are a set of diagrams that mix among themselves by a mixing matrix known. After reviewing the algorithm to generate the mixing matrices and their properties, I will discuss some recent results, a proposal for organizing webs at higher perturbative orders, a new way of constructing the mixing matrices, and the colour structures contributing to the soft anomalous dimension at the four-loop level.