TY - JOUR
T1 - Final-state NN-rescattering in spin asymmetries of (γ, π-) reaction
AU - Darwish, Eed M.
AU - Salam, Agus
N1 - Funding Information:
This work is supported in part by the Bibliotheca Alexandrina—Center for Special Studies and Programs—under grant No. 2602314 Sohag 2nd-Sohag. We are indebted to Profs. H. Arenhövel, T.-S. Harry Lee, T. Sato and A. Sandorfi for fruitful discussions and valuable informations.
PY - 2005/9/5
Y1 - 2005/9/5
N2 - The role of the final-state NN-rescattering (NN-FSI) in the polarization observables of the inclusive reaction d (γ, π-) p p, involving polarization of the photon beam and/or the deuteron target, is investigated. Various single- and double-spin asymmetries are studied with respect to the influence of such interaction effect and numerical predictions are given for forthcoming experiments. It has been found that the effect of NN-FSI is quite important for the single-spin asymmetries Σ, T20, T21 and T22 and the double-spin asymmetry T20ℓ, whereas it is much less important for the vector target asymmetry T11 and other beam-target double-polarization asymmetries. Furthermore, we found that the inclusion of the NN-FSI improves the description of the LEGS data for the linear photon asymmetry.
AB - The role of the final-state NN-rescattering (NN-FSI) in the polarization observables of the inclusive reaction d (γ, π-) p p, involving polarization of the photon beam and/or the deuteron target, is investigated. Various single- and double-spin asymmetries are studied with respect to the influence of such interaction effect and numerical predictions are given for forthcoming experiments. It has been found that the effect of NN-FSI is quite important for the single-spin asymmetries Σ, T20, T21 and T22 and the double-spin asymmetry T20ℓ, whereas it is much less important for the vector target asymmetry T11 and other beam-target double-polarization asymmetries. Furthermore, we found that the inclusion of the NN-FSI improves the description of the LEGS data for the linear photon asymmetry.
KW - Final-state interactions
KW - Meson production
KW - Photonuclear reactions
KW - Photoproduction reactions
KW - Polarization phenomena in reactions
KW - Spin observables
UR - http://www.scopus.com/inward/record.url?scp=22544440579&partnerID=8YFLogxK
U2 - 10.1016/j.nuclphysa.2005.04.026
DO - 10.1016/j.nuclphysa.2005.04.026
M3 - Article
AN - SCOPUS:22544440579
VL - 759
SP - 170
EP - 187
JO - Nuclear Physics A
JF - Nuclear Physics A
SN - 0375-9474
IS - 1-2
ER -