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Title: Higher nucleon resonances in exclusive ([gamma],[pi]N) reactions on nuclei

Abstract

We report calculations for exclusive pion photoproduction on nuclei beyond the first resonance region in the distorted wave impulse approximation. The elementary operator contains contributions from the resonances P[sub 33](1232), P[sub 11](1440), D[sub 13](1520), D[sub 33](1700), S[sub 11](1535), S[sub 11](1650), and F[sub 15](1680), in addition to the usual Born plus vector meson contributions. It gives a good description of single pion photoproduction data up to about 1.1 GeV. Final state interactions are incorporated via optical potentials and are found to be substantial in the coincidence cross sections, but insensitive to the photon asymmetry. Clear signatures of possible medium modifications of the D[sub 13] and F[sub 15] resonances are predicted under selected kinematics. [copyright] [ital 1999] [ital The American Physical Society]

Authors:
;  [1];  [2];  [3];  [4]
  1. (Center for Nuclear Studies, Department of Physics, The George Washington University, Washington, D.C. 20052 (United States))
  2. (Jefferson Laboratory, 12000 Jefferson Avenue, Newport News, Virginia 23606 (United States))
  3. (Institut fuer Kernphysik, Johannes Gutenberg-Universitaet, D-55099 Mainz (Germany))
  4. (Institute of Nuclear and Particle Physics, Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701 (United States))
Publication Date:
OSTI Identifier:
6464502
Alternate Identifier(s):
OSTI ID: 6464502
Resource Type:
Journal Article
Journal Name:
Physical Review, C
Additional Journal Information:
Journal Volume: 60:3; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; FINAL-STATE INTERACTIONS; OPTICAL MODELS; PHOTONUCLEAR REACTIONS; PHOTOPRODUCTION; PIONS; RESONANCE PARTICLES; BASIC INTERACTIONS; BOSONS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; HADRONS; INTERACTIONS; MESONS; NUCLEAR REACTIONS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PSEUDOSCALAR MESONS 663410* -- Photonuclear Reactions & Photon Scattering-- (1992-)

Citation Formats

Lee, F.X., Bennhold, C., Lee, F.X., Kamalov, S.S., and Wright, L.E. Higher nucleon resonances in exclusive ([gamma],[pi]N) reactions on nuclei. United States: N. p., 1999. Web. doi:10.1103/PhysRevC.60.034605.
Lee, F.X., Bennhold, C., Lee, F.X., Kamalov, S.S., & Wright, L.E. Higher nucleon resonances in exclusive ([gamma],[pi]N) reactions on nuclei. United States. doi:10.1103/PhysRevC.60.034605.
Lee, F.X., Bennhold, C., Lee, F.X., Kamalov, S.S., and Wright, L.E. Wed . "Higher nucleon resonances in exclusive ([gamma],[pi]N) reactions on nuclei". United States. doi:10.1103/PhysRevC.60.034605.
@article{osti_6464502,
title = {Higher nucleon resonances in exclusive ([gamma],[pi]N) reactions on nuclei},
author = {Lee, F.X. and Bennhold, C. and Lee, F.X. and Kamalov, S.S. and Wright, L.E.},
abstractNote = {We report calculations for exclusive pion photoproduction on nuclei beyond the first resonance region in the distorted wave impulse approximation. The elementary operator contains contributions from the resonances P[sub 33](1232), P[sub 11](1440), D[sub 13](1520), D[sub 33](1700), S[sub 11](1535), S[sub 11](1650), and F[sub 15](1680), in addition to the usual Born plus vector meson contributions. It gives a good description of single pion photoproduction data up to about 1.1 GeV. Final state interactions are incorporated via optical potentials and are found to be substantial in the coincidence cross sections, but insensitive to the photon asymmetry. Clear signatures of possible medium modifications of the D[sub 13] and F[sub 15] resonances are predicted under selected kinematics. [copyright] [ital 1999] [ital The American Physical Society]},
doi = {10.1103/PhysRevC.60.034605},
journal = {Physical Review, C},
issn = {0556-2813},
number = ,
volume = 60:3,
place = {United States},
year = {1999},
month = {9}
}