Finite Nc corrections in the Balitsky-Kovchegov equation at next-to-leading order

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Lappi , T , Mäntysaari , H & Ramnath , A 2021 , ' Finite N c corrections in the Balitsky-Kovchegov equation at next-to-leading order ' , Proceedings of Science , vol. 387 , 102 . https://doi.org/10.22323/1.387.0102

Title: Finite Nc corrections in the Balitsky-Kovchegov equation at next-to-leading order
Author: Lappi, T.; Mäntysaari, H.; Ramnath, A.
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
Date: 2021-09-01
Language: eng
Number of pages: 5
Belongs to series: Proceedings of Science
ISSN: 1824-8039
URI: http://hdl.handle.net/10138/335500
Abstract: 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.
Subject: 114 Physical sciences
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