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Volume 303 - Loops and Legs in Quantum Field Theory (LL2018) - Parallel 5
The Regge Limit and infrared singularities of QCD scattering amplitudes to all orders
L. Vernazza,* S. Caron-Huot, E. Gardi, J. Reichel
*corresponding author
Full text: pdf
Published on: 2018 October 02
Abstract
In this talk we discuss recent progress in understanding the iterative structure of scattering amplitudes in the high-energy limit. As an application, we show that by using BFKL theory it is possible to determine the infrared divergent part of two-parton amplitudes to all orders in perturbation theory and to next-to-leading-logarithmic accuracy in the high-energy limit, resumming the two-Reggeon contribution. Remarkably, the infrared-singular part can be expressed in a closed form. This allows us to predict the Regge limit of the soft anomalous dimension to any loop order.
DOI: https://doi.org/10.22323/1.303.0038
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