Next-to-Leading Order corrections to the Next-to-Eikonal DIS structure functions

2025/12/18 by Altinoluk, Tolga, Beuf, Guillaume, Favrel, Jules +1
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2512.16788

Abstract

We compute next-to-leading order (NLO) corrections to next-to-eikonal (NEik) quark background contributions to DIS structure functions. Among NEik corrections, t-channel quark exchanges provide the lowest order contributions in α_s, and can be represented as insertions of the quark background field of the target. At NLO, we compute NEik corrections induced by both quark and gluon background fields, and suppressed by an explicit factor of α_s. We show that the NLO corrections to the NEik longitudinal structure function are finite, while those to the NEik transverse structure function exhibit rapidity and UV divergences. These divergences are analyzed, and the finite contributions are extracted.

Citations

• Parton model contributions as next-to-eikonal corrections to the dipole factorization of DIS and SIDIS at low x_Bj
• Initial condition for the Balitsky-Kovchegov equation at next-to-leading order

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