ep → ep π⁰ Reaction Studied in the Δ(1232) Mass Region Using Polarization Asymmetries

Authors

M. Bektasoglu, Old Dominion University
L. Ciciani, Old Dominion University
K.V. Dharmawardane, Old Dominion University
G. E. Dodge, Old Dominion UniversityFollow
T.A. Forest, Old Dominion University
C.E. Hyde-Wright, Old Dominion UniversityFollow
A. Klein, Old Dominion University
A. V. Klimenko, Old Dominion University
S. E. Kuhn, Old Dominion UniversityFollow
S. Stepanyan, Old Dominion University
L. B. Weinstein, Old Dominion UniversityFollow
et al.
CLAS Collaboration

Document Type

Article

Publication Date

2003

DOI

10.1103/PhysRevC.68.035202

Publication Title

Physical Review C

Volume

68

Issue

3

Pages

1-14

Abstract

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.

Comments

© 2003 The American Physical Society

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Publisher's version available at: https://doi.org/10.1103/PhysRevC.68.035202

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

ORCID

0000-0003-1582-2376 (Dodge), 0000-0001-7282-8120 (Hyde-Wright), 0000-0003-2243-6836 (Kuhn), 0000-0001-5416-2900 (Weinstein)

Repository Citation

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.
https://digitalcommons.odu.edu/physics_fac_pubs/487