Pion form factors

Abstract

We consider the electromagnetic and transition pion form factors. Using dispersion relations we simultaneously describe both the hadronic, time-like region and the asymptotic region of large energy-momentum transfer. For the latter we propose a novel mechanism of Regge fermion exchange. We find that hadronic contributions dominate form factors at all currently available energies.

4 pages, 3 figures

References in corpus (9)

• Determination of the Charged Pion Form Factor at Q2=1.60 and 2.45 (GeV/c)2
• Update of the e^+e^-\toπ^+π^- cross section measured by SND detector in the energy region 400<\sqrt{s}<1000 MeV
• Measurement of the e+e- -> pi+pi- cross section with the CMD-2 detector in the 370-520 MeV c.m. energy range
• Measurement of the gamma gamma* --> eta and gamma gamma* --> eta' transition form factors
• Proof of the multi-Regge form of QCD amplitudes with gluon exchanges in the NLA
• Composition of the Pseudoscalar Eta and Eta' Mesons
• The role of P-wave inelasticity in J/psi to pi+pi-pi0
• Reggeized quark -- Reggeized quark -- gluon effective vertex
• High-energy hadron physics at future facilities

Cited by in corpus (17)

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• Pion-pole contribution to hadronic light-by-light scattering in the anomalous magnetic moment of the muon
• Meson Transition Form Factors in Light-Front Holographic QCD
• Dispersive analysis of the pion transition form factor
• γ*γ\rightarrow π^0 transition form factor at low-energies from a model-independent approach
• The VV'P form factors in resonance chiral theory and the pi-eta-eta' light-by-light contribution to the muon g-2
• Transition between nuclear and quark-gluon descriptions of hadrons and light nuclei
• Puzzles in Hadronic Physics and Novel Quantum Chromodynamics Phenomenology
• On the large-Q^2 behavior of the pion transition form factor
• A combined study of the pion's static properties and form factors
• Pion to photon transition form factors with basis light-front quantization
• Hadronic Form Factor Models and Spectroscopy Within the Gauge/Gravity Correspondence
• Influence of confining gluon configurations on the $P\to {\gamma }^{\ast }\gamma$ transition form factors
• gamma^* gamma^* -> pi^0 Form Factor from AdS/QCD
• Determination of pion distribution amplitudes from the electromagnetic form factor with the data-driven dispersion relation
• Asymptotic Freedom in Holographic QCD
• Physics Opportunities with Meson Beams for EIC