Photon impact factor and $k_T$-factorization for DIS in the next-to-leading order
Ian Balitsky, Giovanni A. Chirilli
TL;DR
This paper calculates the photon impact factor for the BFKL pomeron at NLO using Wilson lines, providing a NLO $k_T$-factorization formula for small-$x$ deep inelastic scattering structure functions.
Contribution
It introduces a next-to-leading order calculation of the photon impact factor within the Wilson line operator expansion, advancing the theoretical understanding of small-$x$ DIS.
Findings
Derived the NLO photon impact factor for BFKL pomeron
Presented a NLO $k_T$-factorization formula for structure functions
Enhanced theoretical precision for small-$x$ deep inelastic scattering
Abstract
The photon impact factor for the BFKL pomeron is calculated in the next-to-leading order (NLO) approximation using the operator expansion in Wilson lines. The result is represented as a NLO -factorization formula for the structure functions of small- deep inelastic scattering.
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