Relativistically invariant analysis of polarization effects in exclusive deuteron electrodisintegration process

Journal Article · Thu Sep 01 04:00:00 EDT 2005 · Annals of Physics (New York)

DOI:https://doi.org/10.1016/j.aop.2005.03.006· OSTI ID:20690188

Gakh, G I ^[1]; Rekalo, A P ^[1]; Tomasi-Gustafsson, E ^[1]

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1. DAPNIA/SPhN, CEA/Saclay, 91191 Gif-sur-Yvette Cedex (France)

A general formalism for the calculation of the differential cross-section and polarization observables, for the process of deuteron electrodisintegration, is developed in the framework of relativistic impulse approximation. A detailed analysis of the general structure of the differential cross-section and polarization observables for the e {sup -} + d {yields} e {sup -} + n + p reaction is derived, using the formalism of the structure functions. The obtained expressions have a general nature and they hold in the one-photon-exchange mechanism, assuming P-invariance of the hadron electromagnetic interaction. The model of relativistic impulse approximation is introduced and the final state interaction is taken into account by means of the unitarization of the helicity amplitudes. A detailed description of the unitarization procedure is also presented. Using different parametrizations of the deuteron wave functions, the following polarization observables are calculated in the kinematical region of quasi-elastic deuteron electrodisintegration: the asymmetry for the scattering of longitudinally polarized electrons on a polarized deuteron target, the proton and neutron polarizations (for longitudinally polarized electron beam or vector-polarized deuteron target). The sensitivity to the neutron electric form factor is also thoroughly investigated. The predictions of the model are compared with the results of recent polarization measurements and a good agreement with the existing experimental data has been obtained.

• OSTI ID: 20690188
• Journal Information: Annals of Physics (New York), Journal Name: Annals of Physics (New York) Journal Issue: 1 Vol. 319; ISSN 0003-4916; ISSN APNYA6
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DEUTERIUM TARGET
DEUTERONS
DIFFERENTIAL CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELECTRON BEAMS
ELECTRON DIFFRACTION
ELECTRONS
EXPERIMENTAL DATA
FINAL-STATE INTERACTIONS
FORM FACTORS
HELICITY
IMPULSE APPROXIMATION
NEUTRONS
P INVARIANCE
PHOTONS
POLARIZATION
PROTONS
RELATIVISTIC RANGE
STRUCTURE FUNCTIONS
WAVE FUNCTIONS