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Polarization observables in the $γd\toπNN$ reaction in the $Δ$(1232)-resonance region

E. M. Darwish·Kh. Gad
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Abstract

Incoherent pion photoproduction on the deuteron in the $Δ$(1232)-resonance region is investigated with special emphasis on polarization observables. For the elementary pion photoproduction operator an effective Lagrangian model which includes the standard pseudovector Born terms and a resonance contribution from the $Δ$(1232)-excitation is used. Our results for the elementary $γN\toπN$ reaction are in good agreement with recent experimental data and results of other theoretical calculations. A general analysis of all possible polarization observables for the $γd \toπNN$ reaction with polarized photon beam and/or oriented deuteron target is presented. The unpolarized differential cross section, photon asymmetry, vector and tensor target asymmetries are predicted for forthcoming experiments.

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E. M. Darwish, Kh. Gad. 2003-09-11. Polarization observables in the $γd\toπNN$ reaction in the $Δ$(1232)-resonance region. https://arxiv.org/abs/nucl-th/0309031

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