Physical Review C
Measurements of the angular distributions of target and double-spin asymmetries for the Δ+(1232) in the exclusive channel → p(→e,e'p)π0 obtained at the Jefferson Lab in the Q2 range from 0.5 to 1.5 GeV2/c2 are presented. Results of the asymmetries are compared with the unitary isobar model [D. Drechsel , Nucl. Phys. A645, 145 (1999)], dynamical models [T. Sato and T. S. Lee, Phys. Rev. C 54, 2660 (1996); S. S. Kamalov , Phys. Lett. B 27, 522 (2001)], and the effective Lagrangian theory [R. M. Davidson , Phys. Rev. D 43, 71 (1991)]. Sensitivity to the different models was observed, particularly in relation to the description of background terms on which the target asymmetry depends significantly.
Original Publication Citation
Bektasoglu, M., Dharmawardane, K.V., Dodge, G.E., Hyde-Wright, C.E., Kuhn, S.E., Weinstein, L.B., et al., CLAS Collaboration (2003). ep → ep π⁰ reaction studied in the Δ(1232) mass region using polarization asymmetries. Physical Review C, 68(3), 1-14, Article 035202. https://doi.org/10.1103/PhysRevC.68.035202
0000-0003-1582-2376 (Dodge), 0000-0001-7282-8120 (Hyde-Wright), 0000-0003-2243-6836 (Kuhn), 0000-0001-5416-2900 (Weinstein)
Bektasoglu, M.; Ciciani, L.; Dharmawardane, K.V.; Dodge, G. E.; Forest, T.A.; Hyde-Wright, C.E.; Klein, A.; Klimenko, A. V.; Kuhn, S. E.; Stepanyan, S.; Weinstein, L. B.; et al.; and CLAS Collaboration, "ep → ep π⁰ Reaction Studied in the Δ(1232) Mass Region Using Polarization Asymmetries" (2003). Physics Faculty Publications. 487.
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Publisher's version available at: https://doi.org/10.1103/PhysRevC.68.035202