6533b870fe1ef96bd12cfb84
RESEARCH PRODUCT
Finite Nc corrections in the Balitsky-Kovchegov equation at next-to-leading order
Tuomas LappiTuomas LappiAndrecia RamnathAndrecia RamnathHeikki MäntysaariHeikki Mäntysaarisubject
PhysicsDipoleAmplitudeQuantum electrodynamicsOrder (group theory)kvanttiväridynamiikkaRapidityFunction (mathematics)hiukkasfysiikka114 Physical sciencesGaussian approximationdescription
Publisher Copyright: © owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). We study the finite-Nc corrections to the next-to-leading order (NLO) Balitsky-Kovchegov (BK) equation. This contains correlators of six Wilson lines, which we express in terms of the two-point function using the Gaussian approximation. Numerically, the effects of these finite-Nc corrections on the NLO BK equation are found to be smaller than the expected 1/Nc2 ∼ 10%. Corrections may be large for individual correlators, but have less of an influence on the shape of the amplitude as a function of the dipole size. There is an even smaller effect on the evolution speed as a function of rapidity. Peer reviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-09-01 |