تقرير
Towards a single scale-dependent Pomeron in holographic light-front QCD
| العنوان: | Towards a single scale-dependent Pomeron in holographic light-front QCD |
|---|---|
| المؤلفون: | Dosch, Hans Günter, de Téramond, Guy F., Liu, Tianbo, Sufian, Raza Sabbir, Brodsky, Stanley J., Deur, Alexandre |
| سنة النشر: | 2022 |
| المجموعة: | High Energy Physics - Lattice High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Lattice |
| الوصف: | The Pomeron Regge trajectory underlies the dynamics dependence of hadronic total cross sections and diffractive reactions at high energies. The physics of the Pomeron is closely related to the gluon distribution function and the gluon gravitational form factor of the target hadron. In this article we examine the scale dependence of the nonperturbative gluon distribution in the nucleon and the pion which was derived in a previous article [Phys. Rev. D 104, 114005 (2021)] in the framework of holographic light-front QCD and the Veneziano model. We argue that the QCD evolution of the gluon distribution function $g(x,\mu)$ to large $\mu^2$ leads to a single scale-dependent Pomeron. The resulting Pomeron trajectory $\alpha_P(t, \mu)$ not only depends on the momentum transfer squared $t$, but also on the physical scale $\mu$ of the amplitude, such as the virtuality $Q^2$ of the interacting photon in inclusive diffractive electroproduction. This can explain not only the $Q^2$ evolution of the proton structure function $F_2(x,Q^2)$ at small $x$, but also the observed energy and $Q^2$ dependence of high energy diffractive processes involving virtual photons up to LHC energies. Comment: 22 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2201.09813 |
| رقم الأكسشن: | edsarx.2201.09813 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |