2017•arXiv (Cornell University)Open access

Including resummation in the NLO BK equation

T. Lappi, Heikki Mäntysaari

Abstract

We include a resummation of large transverse momentum logarithms in the next-to-leading order (NLO) Balitsky-Kovchegov equation. The resummed evolution equation is shown to be stable, the evolution speed being significantly reduced by NLO corrections. The contributions from NLO terms that are not enhanced by large logarithms are found to be numerically important close to phenomenologically relevant initial conditions. We numerically determine the value for the constant in the resummed logarithm that includes a maximal part of the full NLO terms in the resummation.

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Key concepts: Resummation, Logarithm, Physics, Quantum electrodynamics, Momentum (technical analysis), Constant (computer programming), Transverse plane, Order (exchange)