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.

17 pages, no figure; v2, minor corrections, a ref. added, to appear in PLB

References in corpus (3)

• QCD and dimensional deconstruction
• Skyrmions from Instantons inside Domain Walls
• Precision electro-weak parameters from AdS5, localized kinetic terms and anomalous dimensions

Cited by in corpus (20)

• Light-Front Dynamics and AdS/QCD Correspondence: The Pion Form Factor in the Space- and Time-Like Regions
• Nucleon electromagnetic and gravitational form factors from holography
• Chiral Dynamics of Baryons from String Theory
• Dynamics of Baryons from String Theory and Vector Dominance
• Linear square-mass trajectories of radially and orbitally excited hadrons in holographic QCD
• Baryon Physics in Holographic QCD
• Pion Form Factors in Holographic QCD
• Holographic glueball structure
• Nucleon Form Factors and Hidden Symmetry in Holographic QCD
• Pion Form Factor in Improved Holographic QCD Backgrounds
• Pseudo scalar contributions to light-by-light correction of muon g-2 in AdS/QCD
• Holographic Nuclear Matter in AdS/QCD
• Holographic Nuclei
• Meson-Nucleon Coupling from AdS/QCD
• Electromagnetic Nucleon-to-Delta Transition in Holographic QCD
• The Electric Dipole Moment of the Nucleons in Holographic QCD
• Conformal Symmetry and Pion Form Factor: Space- and Time-like Region
• Weak-Interacting Holographic QCD
• Consequences of the partial restoration of chiral symmetry in AdS/QCD
• Towards a consistent AdS/QCD dictionary