Electron-photon deep inelastic scattering at small x in holographic QCD

Abstract

We study the electron-photon deep inelastic scattering at small Bjorken variable x in the framework of holographic QCD, employing the Pomeron exchange to describe the involved strong interaction. With the Brower-Polchinski-Strassler-Tan Pomeron exchange kernel and appropriate wave functions for the incident and target particles, which are defined in the five-dimensional AdS space, we obtain the photon structure functions. It is shown that our predictions agree with the experimental data measured at LEP and with those derived from a known parameterization of the photon parton distribution functions.

Comments: 7 pages, 4 figures, prepared for the proceedings of the XXVI International Workshop on Deep Inelastic Scattering and Related Subjects (DIS2018)