تقرير
Exclusive factorization beyond leading twist meets saturation physics
| العنوان: | Exclusive factorization beyond leading twist meets saturation physics |
|---|---|
| المؤلفون: | Boussarie, Renaud, Fucilla, Michael, Szymanowski, Lech, Wallon, Samuel |
| سنة النشر: | 2024 |
| المجموعة: | High Energy Physics - Phenomenology High Energy Physics - Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Theory |
| الوصف: | We develop a framework combining the higher-twist formalism of exclusive processes in the $s$ channel with the semi-classical effective description of small-$x$ physics in the $t$ channel. We apply it to transversely polarized light vector meson production, $\gamma^{*} p \rightarrow V (\rho, \varphi ,\omega) \; p$, which starts at the next-to-leading power and for which a purely collinear treatment leads to end-point singularities. The result is obtained in the most general kinematics, including both forward and non-forward cases by preserving the full impact parameter dependence in the non-perturbative correlators, in both momentum and coordinate space representations. A systematic expansion of the Wilson lines in terms of Reggeized gluon fields is performed in order to obtain the results in the weak-field BFKL approximation. These new results will allow for investigating the dilute-to-dense regime transition of QCD for a wide class of observables. Comment: 73 pages, 12 Figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2407.18115 |
| رقم الأكسشن: | edsarx.2407.18115 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |