Improving the Excited Nucleon Spectrum in Hard-Wall AdS/QCD

Abstract

We show that the nucleon spectrum in a hard-wall AdS/QCD model can be improved by use of a relatively large IR cutoff. All of the spin-1/2 nucleon masses listed in PDG can be fit quite well within 11%. The average error is remarkably only 4.66%.

Comments: 11 pages, 2 figures. v2: references added. v3: add a section about the pion-nucleon coupling, published version