Compton Scattering from the Deuteron and Extracted Neutron Polarizabilities

Abstract

Differential cross sections for Compton scattering from the deuteron were measured at MAX-lab for incident photon energies of 55 MeV and 66 MeV at nominal laboratory angles of $45^{\circ }$, $125^{\circ }$, and $135^{\circ }$. Tagged photons were scattered from liquid deuterium and detected in three NaI spectrometers. By comparing the data with theoretical calculations in the framework of a one-boson-exchange potential model, the sum and difference of the isospin-averaged nucleon polarizabilities, ${\alpha }_N+{\beta }_N=17.4\pm 3.7$ and ${\alpha }_N-{\beta }_N=6.4\pm 2.4$ (in units of $10^{-4}$ fm${}^3$), have been determined. By combining the latter with the global-averaged value for ${\alpha }_p-{\beta }_p$ and using the predictions of the Baldin sum rule for the sum of the nucleon polarizabilities, we have obtained values for the neutron electric and magnetic polarizabilities of ${\alpha }_n=8.8\pm 2.4$(total) $\pm 3.0$(model) and ${\beta }_n=6.5\mp 2.4$(total) $\mp 3.0$(model), respectively.

4 pages, 2 figures, revtex. The text is substantially revised. The cross sections are slightly different due to improvements in the analysis

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• Electromagnetic Polarizabilities of Nucleons bound in ${}^{40}$Ca, ${}^{16}$O and ${}^4$He
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Cited by in corpus (31)

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• The Magnetic Structure of Light Nuclei from Lattice QCD
• The Electromagnetic Self-Energy Contribution to M_p - M_n and the Isovector Nucleon Magnetic Polarizability
• Isospin breaking in the nucleon mass and the sensitivity of beta decays to new physics
• Experiments in Fundamental Neutron Physics
• Magnetic polarizability of hadrons from lattice QCD in the background field method
• Constraints on new interactions from neutron scattering experiments
• Compton scattering on the proton, neutron, and deuteron in chiral perturbation theory to O(Q^4)
• Magnetic properties of the nucleon in a uniform background field
• New Measurement of Compton Scattering from the Deuteron and an Improved Extraction of the Neutron Electromagnetic Polarizabilities
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• Two-photon exchange correction to the Lamb shift and hyperfine splitting of S levels
• Hadron Polarizabilities
• Explicit Delta(1232) Degrees of Freedom in Compton Scattering off the Deuteron
• Nucleon Polarizabilities from Low-Energy Compton Scattering
• Compton Scattering from the Deuteron below Pion-Production Threshold
• Nucleon Polarizabilities from Deuteron Compton Scattering within a Green's-Function Hybrid Approach
• Dispersion theory of nucleon Compton scattering and polarizabilities
• Compton scattering from ${}^4$He at the TUNL HI$\gamma$S facility
• Photon Scattering with the Lorentz Integral Transform Method
• Chiral perturbation theory for electroweak reactions on deuterium
• Deuteron Compton Scattering in Effective Field Theory And Spin-Independent Nucleon Polarizabilities
• Single-pion contribution to the Gerasimov--Drell--Hearn sum rule and related integrals
• Nucleon Polarisabilities from Compton Scattering off the One- and Few-Nucleon System
• Nucleon Spin-Polarisabilities from Polarisation Observables in Low-Energy Deuteron Compton Scattering
• Compton Scattering by the Nucleon
• Few-neutron systems with the long-range Casimir-Polder force
• Compton Scattering from the Deuteron above Pion-Production Threshold