Gluon saturation at higher orders and improvement of kinematics
Guillaume Beuf
TL;DR
This paper improves the theoretical description of gluon saturation at low Bjorken-x by refining kinematic treatments, leading to an improved BK equation that resums significant higher-order corrections.
Contribution
It introduces a refined kinematic approach in mixed-space to enhance the BK equation, effectively resumming large NLO corrections in gluon saturation regimes.
Findings
Improved BK equation with better higher-order correction resummation
Reduction of pathologically large NLO corrections in low-x evolution
Enhanced theoretical framework for gluon saturation phenomena
Abstract
Standard perturbative calculations lead to pathologically large NLO corrections to low- evolution equations like BFKL and BK. Using a more refined treatment of kinematics in mixed-space, relevant when gluon saturation sets on, one obtains an improved version of the BK equation, resumming to all orders the most severe of those large higher order corrections.
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