Higher order forward spin polarizability
arXiv:1001.4230 · doi:10.1016/j.physletb.2010.03.007
Abstract
As a guideline for future experiments to extract the four (leading) spin polarizabilities of the nucleon, we have constructed the forward amplitude for polarized Compton scattering by dispersion integrals. These integrals have been saturated by recently measured helicity-dependent photoabsorption cross sections as well as predictions for pion photoproduction multipoles from several phenomenological descriptions and chiral perturbation theory. The comparison of these results corroborates the strategy to extract the spin polarizabilities by fitting them to polarized Compton data and fixing all higher order spin effects by dispersion relations based on pion photoproduction multipoles.
21 pages, 6 figures, 3 Tables; version to appear in Phys. Lett. B
References in corpus (26)
- Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
- Unitary Isobar Model - MAID2007
- Dispersion relations in real and virtual Compton scattering
- Effective theory of the Delta(1232) in Compton scattering off the nucleon
- Analysis of Pion Photoproduction Data
- First measurement of the Gerasimov-Drell-Hearn integral for Hydrogen from 200 to 800 MeV
- Multipole analysis of pion photoproduction based on fixed t dispersion relations and unitarity
- gamma* N -> Delta transition form factors: a new analysis of the JLab data on p(e,e'p)pi0 at Q^2=2.8 and 4.0 (GeV/c)^2
- Low-Energy Compton Scattering of Polarized Photons on Polarized Nucleons
- Predictive powers of chiral perturbation theory in Compton scattering off protons
- Compton Scattering and the Spin Structure of the Nucleon at Low Energies
- Polarizability of the Nucleon and Compton Scattering
- Aspects of Nucleon Compton Scattering
- Higher Order Polarizabilities of the Proton
- Fixed-t subtracted dispersion relations for Compton scattering off the nucleon
- Signatures of Chiral Dynamics in Low Energy Compton Scattering off the Nucleon
- Magnetic polarizability of hadrons from lattice QCD in the background field method
- Electromagnetic and spin polarisabilities in lattice QCD
- Neutron electric polarizability from unquenched lattice QCD using the background field approach
- Spin polarisabilities of the nucleon at NLO in the chiral expansion
- Neutron electric dipole moment with external electric field method in lattice QCD
- Electric Polarizability of Neutral Hadrons from Lattice QCD
- Proton spin polarizabilities from polarized Compton scattering
- Hadron structure at low Q^2
- Spin Polarizabilities of the Nucleon from Polarized Low Energy Compton Scattering
- Radiative pion capture by a nucleon
Cited by in corpus (24)
- Using effective field theory to analyse low-energy Compton scattering data from protons and light nuclei
- The Spin Structure of the Nucleon
- Nucleon Polarizabilities: from Compton Scattering to Hydrogen Atom
- Compton scattering from the proton in an effective field theory with explicit Delta degrees of freedom
- Hadron Polarizabilities
- Predictions of covariant chiral perturbation theory for nucleon polarisabilities and polarised Compton scattering
- Compton scattering from chiral dynamics with unitarity and causality
- Dispersion Theory in Electromagnetic Interactions
- Nucleon Polarisabilities at and Beyond Physical Pion Masses
- Proton polarisabilities from Compton data using Covariant Chiral EFT
- Nucleon resonances in Compton scattering
- Forward doubly-virtual Compton scattering off the nucleon in chiral perturbation theory: II. Spin polarizabilities and moments of polarized structure functions
- Designing Optimal Experiments: An Application to Proton Compton Scattering
- Proton scalar dipole polarizabilities from real Compton scattering data, using fixed-t subtracted dispersion relations and the bootstrap method
- First extraction of the scalar proton dynamical polarizabilities from real Compton scattering data
- Evaluation of the forward Compton scattering off protons: II. Spin-dependent amplitude and observables
- Dispersion theory of nucleon Compton scattering and polarizabilities
- Comprehensive Study of Observables in Compton Scattering on the Nucleon
- Hyperon forward spin polarizability gamma0 in baryon chiral perturbation theory
- Structure of the nucleon and spin-polarizabilities
- First concurrent extraction of the leading-order scalar and spin proton polarizabilities
- Nucleon Polarizabilities: Theory
- Hyperon forward spin polarizabilty gamma0
- Energy of a point-like neutron in an external electromagnetic field