Quark Mass Dependence of Hadron Spectrum in Holographic QCD
High Energy Physics - Theory
2010-04-06 v2 High Energy Physics - Lattice
High Energy Physics - Phenomenology
Abstract
We compute a shift of baryon mass spectra due to quark masses in perturbation, in Sakai-Sugimoto model of holographic QCD. We find the shift for the ground state nucleons to be \delta M = 4.1 m_{\pi}^2 [GeV^{-1}], which is consistent with the current lattice QCD result. We predict the same value of the shift for N(1535) and Delta, while a larger value 7.7 m_{\pi}^2 [GeV^{-1}] for Roper N(1440). We also present some evidences that the shifts of the vector meson masses are suppressed in the large 't Hooft coupling limit.
Keywords
Cite
@article{arxiv.0906.0402,
title = {Quark Mass Dependence of Hadron Spectrum in Holographic QCD},
author = {Koji Hashimoto and Takayuki Hirayama and Deog Ki Hong},
journal= {arXiv preprint arXiv:0906.0402},
year = {2010}
}
Comments
20 pages, v2: matching with lattice data updated for Delta, references added