Publications
Publication Information
| Title | Towards a universal scale-dependent Pomeron trajectory in holographic light-front QCD |
| Authors | Hans Gunter Dosch, Guy De Teramond, Tianbo Liu, Raza Sufian, Stanley Brodsky, Alexandre Deur |
| JLAB number | JLAB-THY-22-3551 |
| LANL number | arXiv:2201.09813 |
| Other number | DOE/OR/23177-5408, SLAC-PUB-17641 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review D Volume 105 Page(s) 034029 Refereed | |
| Publication Abstract: | 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 gravitational form factor of the target hadron. 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 diffractive electroproduction. 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~\cite{deTeramond:2021lxc} 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, universal, scale-dependent Pomeron which 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. |
| Experiment Numbers: | |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevD.105.034029 |
| Accepted Manuscript: | PhysRevD.105.034029.pdf |
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