Lab in the Q2 range from 0.5 to 1.5GeV2/c2 are presented. Results of the asymmetries are compared with the unitary isobar model [D. Drechsel et al., Nucl. Phys. A645, 145 (1999)], dynamical models [T. Sato and T. S. Lee, Phys. Rev. C 54, 2660 (1996); S. S. Kamalov et al., Phys. Lett. B 27, 522 (2001)], and the effective Lagrangian theory [R. M. Davidson et al., 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.
Physical Review C
Biselli, Angela and CLAS Collaboration, "ep⃗ epπ0 reaction studied in the Δ (1232) mass region using polarization asymmetries" (2003). Physics Faculty Publications. 18.
A. Biselli et al. [CLAS Collaboration], "ep⃗ epπ0 reaction studied in the Δ (1232) mass region using polarization asymmetries", Physical Review C Volume 68, Issue 3, 035202 (2003) DOI: 10.1103/PhysRevC.68.035202