Deep inelastic scattering from polarized spin-$1/2$ hadrons at low $x$ from string theory
Abstract
We study polarized deep inelastic scattering of charged leptons from spin- hadrons at low values of the Bjorken parameter and large 't Hooft coupling in terms of the gauge/string theory duality. We calculate the structure functions from type IIB superstring theory scattering amplitudes. We discuss the role of the non-Abelian Chern-Simons term and the Pauli term from the five-dimensional gauged supergravity. Furthermore, the exponentially small- regime where Regge physics becomes important is analyzed in detail for the antisymmetric structure functions. In this case the holographic dual picture of the Pomeron exchange is realized by a Reggeized gauge field. We compare our results with experimental data of the proton antisymmetric structure function , obtaining a very good level of agreement.
Cite
@article{arxiv.1807.11540,
title = {Deep inelastic scattering from polarized spin-$1/2$ hadrons at low $x$ from string theory},
author = {Nicolas Kovensky and Gustavo Michalski and Martin Schvellinger},
journal= {arXiv preprint arXiv:1807.11540},
year = {2018}
}
Comments
39 pages, 8 figures