Quark Mass Dependence of Hadron Spectrum in Holographic QCD
arXiv:0906.0402 · doi:10.1103/PhysRevD.81.045016
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 δM = 4.1 m_π^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_π^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.
20 pages, v2: matching with lattice data updated for Delta, references added
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- Heavy Holographic QCD
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- Deuteron electric dipole moment from holographic QCD
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