Pion Form Factor in Improved Holographic QCD Backgrounds
arXiv:0712.1811 · doi:10.1103/PhysRevD.77.115007
Abstract
We extend a recent numerical calculation of the pion electromagnetic form factor F_π(Q^2) in holographic QCD to study two important issues regarding the behavior of fields in the bulk. First, we show that using a chiral symmetry-breaking field formally satisfying the boundary conditions of the ``soft-wall'' model changes numerical results very little from the earlier calculation that ignores these constraints. Second, we use a background field that interpolates between ``hard-wall'' and ``soft-wall'' models to obtain an improved model that reproduces the desirable phenomenological features of both. In all cases, F_π$ for large Q^2 is shallower than data, an effect that can be cured by relaxing the fit to one of the static observables, particularly the decay constant f_π.
19 pages, 1 eps figure. This version, to appear in Phys. Rev. D, includes an extended discussion of the fit to the soft-wall model and a detailed description of the numerical approaches used
References in corpus (32)
- Gauge Theory Correlators from Non-Critical String Theory
- The Large N Limit of Superconformal Field Theories and Supergravity
- Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
- QCD and a Holographic Model of Hadrons
- Linear Confinement and AdS/QCD
- Hard Scattering and Gauge/String Duality
- Chiral symmetry breaking from five dimensional spaces
- Hadronic Spectrum of a Holographic Dual of QCD
- Heavy-Quark Potentials and AdS/QCD
- Determination of the Charged Pion Form Factor at Q2=1.60 and 2.45 (GeV/c)2
- QCD and dimensional deconstruction
- Determination of the pion charge form factor for Q^2=0.60-1.60 GeV^2
- Structure of Vector Mesons in Holographic Model with Linear Confinement
- Interpolating between low and high energy QCD via a 5D Yang-Mills model
- On the light glueball spectrum in a holographic description of QCD
- Gauge/string duality and scalar glueball mass ratios
- The scalar and pseudoscalar sector in a five-dimensional approach to chiral symmetry breaking
- Form Factors and Wave Functions of Vector Mesons in Holographic QCD
- Holographic Model for Hadrons in Deformed AdS5 Background
- Baryons in AdS/QCD
- Pion Form Factor in Chiral Limit of Hard-Wall AdS/QCD Model
- Geometric approach to condensates in holographic QCD
- Linear square-mass trajectories of radially and orbitally excited hadrons in holographic QCD
- Pion Form Factors in Holographic QCD
- The Cornell Potential from General Geometries in AdS / QCD
- Perfecting the Ultra-violet of Holographic Descriptions of QCD
- On the Couplings of Vector Mesons in AdS/QCD
- Four-point functions and kaon decays in a minimal AdS/QCD model
- Static strings in Randall-Sundrum scenarios and the quark anti-quark potential
- On the Delta I = 1/2 Rule in Holographic QCD
- Holographic Wave Functions, Meromorphization and Counting Rules
- Static strings in Randall-Sundrum scenarios and the quark anti-quark potential: Erratum
Cited by in corpus (58)
- Light-Front Holographic QCD and Emerging Confinement
- Charged pion form factor between Q^2=0.60 and 2.45 GeV^2. II. Determination of, and results for, the pion form factor
- Nucleon electromagnetic and gravitational form factors from holography
- Light scalar mesons in the soft-wall model of AdS/QCD
- Chiral Symmetry Breaking in Soft-Wall AdS/QCD
- Light and heavy mesons in a soft-wall holographic approach
- Light-Front Dynamics and AdS/QCD Correspondence: Gravitational Form Factors of Composite Hadrons
- Dilaton in a soft-wall holographic approach to mesons and baryons
- The chiral condensate in holographic models of QCD
- Meson wave function from holographic models
- An AdS/QCD model from tachyon condensation: II
- Prediction for the Mass Spectra of Resonance Mesons in the Soft-Wall AdS/QCD with a Modified 5D Metric
- Holographic Approach to Finite Temperature QCD: The Case of Scalar Glueballs and Scalar Mesons
- Nucleon structure including high Fock states in AdS/QCD
- Gravitational Form Factors in the Axial Sector from an AdS/QCD Model
- Pion in the Holographic Model with 5D Yang-Mills Fields
- Pseudoscalar Mass Spectrum in a Soft-Wall Model of AdS/QCD
- Strange mesons and kaon-to-pion transition form factors from holography
- Chiral Phase Transition and Meson Melting from AdS/QCD
- QCD sum rules with nonlocal condensates and the spacelike pion form factor
- Modes with variable mass as an alternative in AdS / QCD models with chiral symmetry breaking
- Chiral phase transition and meson spectrum in improved soft-wall AdS/QCD
- Endpoint behavior of the pion distribution amplitude in QCD sum rules with nonlocal condensates
- Infrared-Improved Soft-wall AdS/QCD Model for Mesons
- Meson-Nucleon Coupling from AdS/QCD
- How Well Does AdS/QCD Describe QCD?
- Electromagnetic Nucleon-to-Delta Transition in Holographic QCD
- Deep inelastic scattering for vector mesons in holographic D4-D8 model
- Nonlinear realization of chiral symmetry breaking in holographic soft wall models
- Nonperturbative relativistic approach to pion form factor: predictions for future JLab experiments
- Holography at work for nuclear and hadron physics
- Family of dilatons and metrics for AdS/QCD models
- Pion electromagnetic form factor, perturbative QCD, and large-Nc Regge models
- Potentials for soft wall AdS/QCD
- Towards a theory of bottom-up holographic models for linear Regge trajectories of light mesons
- Spontaneous chiral symmetry breaking in holographic soft wall models
- Deep inelastic scattering off a plasma with flavour from D3-D7 brane model
- Kaon form factor in holographic QCD
- New vistas of the meson structure in QCD from low to high energies
- Hadronic Form Factor Models and Spectroscopy Within the Gauge/Gravity Correspondence
- gamma^* gamma^* -> pi^0 Form Factor from AdS/QCD
- The effects of deformation parameter on thermal width of moving quarkonia in plasma
- Meson distribution amplitudes in holographic models
- Charm meson couplings in hard-wall Holographic QCD
- Deep Inelastic Scattering in Holographic AdS/QCD Models
- Tensor meson couplings in AdS/QCD
- The Dynamics and Thermodynamics of Soft-Wall AdS/QCD
- Hadronic vacuum polarization contribution to the muon in holographic QCD
- Chiral Symmetry Breaking in a Soft-Wall Model of AdS/QCD
- Effects of bulk symmetry breaking on AdS/QCD predictions
- Asymptotic Freedom in Holographic QCD
- AdS/QCD and Light Front Holography: A New Approximation to QCD
- QCD and Light-Front Holography
- The Thermodynamics of a 5D Gravity-Dilaton-Tachyon Solution
- Strange meson form factors in holographic QCD
- Holographic QCD Running Coupling Constant from the Ricci Flow
- Divergences in the hadronic light-by-light amplitude of the holographic soft-wall model
- Pion Form Factor in QCD: How to Calculate?