Hybrid high-energy factorization and evolution at NLO from the high-energy limit of collinear factorization
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , |
|---|---|
| Format: | Preprint |
| Publié: |
2025
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866929721884803072 |
|---|---|
| author | van Hameren, Andreas Nefedov, Maxim |
| author_facet | van Hameren, Andreas Nefedov, Maxim |
| contents | We derive the scheme of NLO computations of generic observables in high-energy hadron-hadron collisions within the framework of high-energy factorization (HEF) with one off-shell initial-state parton, by taking a high-energy limit of the NLO computation in collinear factorization (CF). The NLO terms belonging to the projectile and target are identified and the ambiguity of projectile-target separation is related with the Collins-Soper scale ($μ_Y$). The NLO unintegrated PDF(UPDF) is constructed in terms of the usual PDFs, and its $μ_Y$-evolution reproduces the Collins-Soper-Sterman equation in the TMD limit ($|k_\perp|\ll μ_Y$). The resummation of high-energy logarithms is taken care of by the BFKL-Collins-Ellis evolution of the Green's function in the UPDF. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_02619 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Hybrid high-energy factorization and evolution at NLO from the high-energy limit of collinear factorization van Hameren, Andreas Nefedov, Maxim High Energy Physics - Phenomenology We derive the scheme of NLO computations of generic observables in high-energy hadron-hadron collisions within the framework of high-energy factorization (HEF) with one off-shell initial-state parton, by taking a high-energy limit of the NLO computation in collinear factorization (CF). The NLO terms belonging to the projectile and target are identified and the ambiguity of projectile-target separation is related with the Collins-Soper scale ($μ_Y$). The NLO unintegrated PDF(UPDF) is constructed in terms of the usual PDFs, and its $μ_Y$-evolution reproduces the Collins-Soper-Sterman equation in the TMD limit ($|k_\perp|\ll μ_Y$). The resummation of high-energy logarithms is taken care of by the BFKL-Collins-Ellis evolution of the Green's function in the UPDF. |
| title | Hybrid high-energy factorization and evolution at NLO from the high-energy limit of collinear factorization |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2501.02619 |