Baryons in AdS/QCD
Abstract
We construct a holographic model for baryons in the context of AdS/QCD and study the spin-1/2 nucleon spectra and its couplings to mesons, taking fully account of the effects from the chiral symmetry breaking. A pair of 5D spinors is introduced to represent both left and right chiralities. Our model contains two adjustable parameters, the infrared cutoff and the Yukawa coupling of bulk spinors to bulk scalars, corresponding to the order parameter of chiral symmetry. Taking the lowest-lying nucleon mass as an input, we calculate the mass spectrum of excited nucleons and the nucleon couplings to pions. The excited nucleons show a parity-doubling pattern with smaller pion-nucleon couplings.
Cite
@article{arxiv.hep-ph/0609270,
title = {Baryons in AdS/QCD},
author = {Deog Ki Hong and Takeo Inami and Ho-Ung Yee},
journal= {arXiv preprint arXiv:hep-ph/0609270},
year = {2008}
}
Comments
17 pages, no figure; v2, minor corrections, a ref. added, to appear in PLB