ISSN:
1432-5411
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The possibility to obtain information on γn scattering at intermediate energies from the reaction γd→γ′np is analyzed. To this aim, the differential cross sectiond 3 σ/dΩ γ ,dΩ n dE n and the scattering asymmetry with linearly polarized photons are calculated at photon energies 100 to 400 MeV in the diagrammatic approach. The pole diagrams of the impulse approximation are evaluated with realistic γn and γp scattering amplitudes. One-loop diagrams withnp rescattering in the final state and with meson-exchange and isobar currents are taken into account as well. The main contribution to the differential cross sectiond 3 σ/dΩ γ ,dΩ n dE n in the kinematics of quasi-free γn scattering arises from the neutron pole diagram. The correction due to other diagrams is typically −30% to −10% and decreases with increasing photon energy and momentum transfer. The sensitivity of the cross sections to the magnitude of the neutron electric polarizability and to the sign of the π0→2γ decay constant is demonstrated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01355284
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