Kinematic power corrections for TMD factorization theorem of semi-inclusive deep-inelastic scattering
Fuente:
arXiv
Guardado en:
| Autores principales: | , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2025
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866915557753749504 |
|---|---|
| author | Piloneta, Sara Vladimirov, Alexey |
| author_facet | Piloneta, Sara Vladimirov, Alexey |
| contents | 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 $Q\sim10$GeV, but can reach several tens of percents when $Q\sim 2$GeV. Consequently, accounting for kinematic power corrections can be vital for an accurate theoretical description of current SIDIS measurements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_14496 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Kinematic power corrections for TMD factorization theorem of semi-inclusive deep-inelastic scattering Piloneta, Sara Vladimirov, Alexey High Energy Physics - Phenomenology 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 $Q\sim10$GeV, but can reach several tens of percents when $Q\sim 2$GeV. Consequently, accounting for kinematic power corrections can be vital for an accurate theoretical description of current SIDIS measurements. |
| title | Kinematic power corrections for TMD factorization theorem of semi-inclusive deep-inelastic scattering |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2510.14496 |