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Phys. Rev. C 75, 015205 (2007) [10 pages]

Extraction and interpretation of γN→Δ form factors within a dynamical model

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B. Juliá-Díaz1,2, T.-S. H. Lee1,3, T. Sato1,4, and L. C. Smith1,5
1Excited Baryon Analysis Center, Thomas Jefferson National Accelerator Facility, Newport News, Virginia 22901, USA
2Departament d'Estructura i Constituents de la Matèria, Universitat de Barcelona, E-08028 Barcelona, Spain
3Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
4Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
5Physics Department, University of Virginia, Charlottesville, Virginia 22901, USA

Received 10 November 2006; published 18 January 2007

Within the dynamical model of Refs. [Phys. Rev. C 54, 2660 (1996); 63, 055201 (2001)], we perform an analysis of recent data of pion electroproduction reactions at energies near the Δ(1232) resonance. We discuss possible interpretations of the extracted bare and dressed γN→Δ form factors in terms of relativistic constituent quark models and lattice quantum chromodynamics calculations. Possible future developments are discussed.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.75.015205
DOI:
10.1103/PhysRevC.75.015205
PACS:
13.75.Gx, 13.40.Gp, 25.20.Lj
 
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