Mar 23 – 27, 2020
Brooklyn, NY
US/Eastern timezone

All-order amplitudes at any multiplicity in the multi-Regge limit

Mar 26, 2020, 9:18 AM
18m
Brooklyn, NY

Brooklyn, NY

333 Adams Street, Brooklyn, New York 11201, USA
Contributed Talk Small-x, Diffraction and Vector Mesons Small-x, Diffraction and Vector Mesons

Speaker

Georgios Papathanasiou (DESY)

Description

We propose an all-loop expression for scattering amplitudes in planar N=4 super Yang-Mills theory in multi-Regge kinematics valid for all multiplicities, all helicity configurations and arbitrary logarithmic accuracy. Our expression is arrived at from comparing explicit perturbative results with general expectations from the integrable structure of a closely related collinear limit. A crucial ingredient of the analysis is an all-order extension for the central emission vertex that we recently computed at next-to-leading logarithmic accuracy. As an application, we use our all-order formula to prove that all amplitudes in this theory in multi-Regge kinematics are single-valued multiple polylogarithms of uniform transcendental weight.

Primary author

Co-authors

vittorio del duca (ETH Zurich & INFN LNF) Stefan Druc (University of Southampton) James Drummond (University of Southampton) Claude Duhr (CERN) Falko Dulat (SLAC) Robin Marzucca (Durham University) Bram Verbeek

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