Nuclear Photoproduction of Pseudoscalar Mesons at Forward Angles up to 6.0 GeV

Journal Article · Fri Oct 26 04:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2813786· OSTI ID:21036012

Rodrigues, T E ^[1]; Mesa, J ^[2]; Garcia, C ^[3]; Shtejer, K ^[1]; Dale, D; Cole, P L ^[4]; Nakagawa, I ^[5]; Arruda-Neto, J D. T

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1. Physics Institute, University of Sao Paulo, Sao Paulo (Brazil)
2. Department of Physics and Biophysics--UNESP, Botucatu (Brazil)
3. Center of Applied Studies for Nuclear Developments, Havana (Cuba)
4. Department of Physics, Idaho State University, Pocatello ID, 83209 (United States)
5. RIKEN 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)

The nuclear incoherent {pi}{sup 0} photoproduction cross section from {sup 12}C is evaluated at forward angles in the 4.0 to 6.0 GeV energy range using the multicollisional intranuclear cascade model MCMC. The model incorporates some improvements in comparison with previous versions associated with the momentum distribution (MD) for light nuclei--extracted from the available (e,e{sup '}p) data--as well as the evaluation of the shadowing effects during the photo-nucleus interaction. The final results of the single and double differential cross sections at forward angles are very sensitive to the MD parameterizations due to the Pauli principle, which largely suppresses the cross sections for low momentum transfer. The attenuation of the nuclear cross section due to pion--nucleus final state interactions is approximately 40% (without nuclear shadowing), which is in nice agreement with the predictions from the Glauber model. The single and double {pi}{sup 0} differential cross sections are presented for possible applications for the interpretation of the inelastic background in the PrimEx experiment at the Jefferson Laboratory.

• OSTI ID: 21036012
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 947; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATTENUATION
CARBON 12
CARBON 12 TARGET
CEBAF ACCELERATOR
COMPARATIVE EVALUATIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
FINAL-STATE INTERACTIONS
GEV RANGE
MOMENTUM TRANSFER
NUCLEAR CASCADES
NUCLEAR MODELS
PAULI PRINCIPLE
PHOTONUCLEAR REACTIONS
PHOTOPRODUCTION
PIONS NEUTRAL
SCATTERING