Relativistically invariant analysis of {delta}-isobar production in deuteron electrodisintegration: e{sup -}+d{yields}e{sup -}+{delta}+N: General analysis of polarization effects

Journal Article · Tue Sep 15 04:00:00 EDT 2009 · Annals of Physics (New York)

DOI:https://doi.org/10.1016/j.aop.2009.03.010· OSTI ID:21308083

Gakh, G I ^[1]

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1. National Science Centre, Kharkov Institute of Physics and Technology, Akademicheskaya 1, 61108 Kharkov (Ukraine)

The differential cross-section and the polarization observables for {delta}-isobar production in the deuteron electrodisintegration process, e{sup -}+d{yields}e{sup -}+{delta}+N, are calculated in a general formalism based on structure functions. The obtained expressions have a general nature, hold for one-photon-exchange, assuming P-invariance of the electromagnetic interaction and the conservation of the hadron electromagnetic current. The dependence of the differential cross-section of the e{sup -}+d{yields}e{sup -}+{delta}+N reaction on the vector and tensor polarizations of the deuteron target with unpolarized and longitudinally polarized electrons is considered. The general dependence of the asymmetries on two of five kinematic variables, the azimuthal angle {phi} and {epsilon} (linear polarization of the virtual photon) is calculated. A similar analysis is performed for the polarization of the nucleon produced in {gamma}*d{yields}{delta}N reaction provided the electron beam is unpolarized or longitudinally polarized. Polarization effects, which are due to the strong {delta}N-interaction in the final state are calculated. The photoproduction of the {delta}-isobar on the deuteron target has been considered in detail, as a particular case. The differential cross-section and various polarization observables have been derived in terms of the reaction amplitudes. The polarization observables due to the linear and circular polarizations of the photon, when the deuteron target is arbitrarily polarized have been derived in terms of the reaction amplitudes. The polarization of the final nucleon is also considered.

• OSTI ID: 21308083
• Journal Information: Annals of Physics (New York), Journal Name: Annals of Physics (New York) Journal Issue: 9 Vol. 324; ISSN 0003-4916; ISSN APNYA6
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DEUTERIUM TARGET
DEUTERONS
DIFFERENTIAL CROSS SECTIONS
ELECTRON BEAMS
ELECTRONS
NUCLEONS
P INVARIANCE
PHOTONS
PHOTOPRODUCTION
POLARIZATION
POSITRONS
STRUCTURE FUNCTIONS