Kinematic power corrections for TMD factorization theorem of semi-inclusive deep-inelastic scattering

2025/10/16 by Sara Piloñeta, Piloneta, Sara, Alexey Vladimirov +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2510.14496

openalex publication_date 2025/10/16 · openalex created_date 2025/10/18 · openalex updated_date 2026/07/28

Abstract

We evaluate the complete set of kinematic power corrections (KPCs) to the leading power (LP) term of the transverse momentum dependent (TMD) factorization theorem for semi-inclusive deep-inelastic scattering (SIDIS) with a polarized target. This formulation restores the contributions of twist-two TMD distributions to all structure functions, including those that vanish at leading power, such as contributions of longitudinal photons. The resulting expressions are explicitly gauge- and frame-invariant, and inherit all key features of the standard TMD factorization framework, including the coefficient functions and the evolution equations. Numerical estimations show that KPCs contribute only a few percent at Q∼10GeV, but can reach several tens of percents when Q∼ 2GeV. Consequently, accounting for kinematic power corrections can be vital for an accurate theoretical description of current SIDIS measurements.

Citations

• Soft background fields at next-to-leading power in transverse momentum dependent SIDIS with jets
• Determination of unpolarized TMD distributions from the fit of Drell-Yan and SIDIS data at N⁴LL
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Related

• Kinematic power corrections in TMD factorization theorem
• Transverse momentum dependent factorization for SIDIS at next-to-leading power
• Transverse-momentum-dependent factorization at next-to-leading power
• Determination of unpolarized TMD distributions from the fit of Drell-Yan and SIDIS data at N⁴LL
• Leading qT/Q correction for Drell-Yan in TMD factorization