Generalized baryon form factors and proton structure functions in the Sakai-Sugimoto model
High Energy Physics - Phenomenology
2014-04-25 v3 High Energy Physics - Theory
Abstract
We investigate the production of positive parity baryon resonances in proton electromagnetic scattering within the Sakai-Sugimoto model. The latter is a string model for the non-perturbative regime of large QCD. Using holographic techniques we calculate the generalized Dirac and Pauli form factors that describe resonance production. We use these results to estimate the contribution of resonance production to the proton structure functions. Interestingly, we find an approximate Callan-Gross relation for the structure functions in a regime of intermediate values of the Bjorken variable.
Keywords
Cite
@article{arxiv.1112.1439,
title = {Generalized baryon form factors and proton structure functions in the Sakai-Sugimoto model},
author = {C. A. Ballon Bayona and Henrique Boschi-Filho and Nelson R. F. Braga and Matthias Ihl and Marcus A. C. Torres},
journal= {arXiv preprint arXiv:1112.1439},
year = {2014}
}
Comments
v3: 38 pages, 25 figures. We added a new subsection in order to compare our results with experimental data. To appear in Nucl. Phys. B