Production of negative parity baryons in the holographic Sakai-Sugimoto model

TL;DR

This paper uses the holographic Sakai-Sugimoto model to study negative parity baryon resonances, extracting form factors and amplitudes, and compares results with experimental data, providing insights into baryon structure.

Contribution

It extends the Sakai-Sugimoto model to include negative parity baryons and calculates their form factors and amplitudes, aligning theoretical predictions with experimental observations.

Findings

Reasonable agreement with experimental data for S11(1535) resonance

Estimated negative parity baryons' contribution to proton structure functions

Provided holographic calculations of baryon form factors and helicity amplitudes

Abstract

We extend our investigation of resonance production in the Sakai-Sugimoto model to the case of negative parity baryon resonances. Using holographic techniques we extract the generalized Dirac and Pauli baryon form factors as well as the helicity amplitudes for these baryonic states. Identifying the first negative parity resonance with the experimentally observed S_{11}(1535), we find reasonable agreement with experimental data from the JLab-CLAS collaboration. We also estimate the contribution of negative parity baryons to the proton structure functions.