Published June 12, 2008
| Version v1
Journal article
Spin asymmetry for the 16O(γ→,π-p) reaction in the Δ(1232) region within an effective Lagrangian approach
- 1. Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 (United States)
- 2. Grupo de Fisica Nuclear, Departamento de Fisica Atomica, Molecular y Nuclear, Facultad de Ciencias Fisicas, Universidad Complutense de Madrid, Avda. Complutense s/n, E-28040 Madrid (Spain)
- 3. Gesellschaft fuer Schwerionenforschung mbH, D-64291 Darmstadt (Germany)
Description
The spin asymmetry of the photon in the exclusive A(γ→,πN)A-1 reaction is computed employing a recently developed fully relativistic model based on elementary pion production amplitudes that include a consistent treatment of the spin-3/2 nucleon resonances. We compare the results of this model to the only available data on Oxygen [K. Hicks, et al., Phys. Rev. C 61 (2000) 054609] and find that, contrary to other models, the predicted spin asymmetry compares well to the available experimental data in the Δ(1232) region. Our results indicate that no major medium modifications in the Δ(1232) properties are needed in order to describe the measured spin asymmetries
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physletb.2008.05.003Additional details
Identifiers
- DOI
- 10.1016/j.physletb.2008.05.003;
- arXiv
- arXiv:0805.1858v1;
- PII
- S0370-2693(08)00560-1;
Publishing Information
- Journal Title
- Physics Letters. Section B
- Journal Volume
- 664
- Journal Issue
- 1-2
- Journal Page Range
- p. 57-63
- ISSN
- 0370-2693
- CODEN
- PYLBAJ
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40046920
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ASYMMETRY; DELTA-1232 BARYONS; LAGRANGIAN FUNCTION; NUCLEONS; OXYGEN 16 TARGET; PHOTONS; PHOTOPRODUCTION; PIONS MINUS; RELATIVISTIC RANGE; SPIN
- Descriptors DEC
- ANGULAR MOMENTUM; BARYONS; BASIC INTERACTIONS; BOSONS; DELTA BARYONS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FUNCTIONS; HADRONS; INTERACTIONS; MASSLESS PARTICLES; MESONS; N*BARYONS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PIONS; PSEUDOSCALAR MESONS; TARGETS
Optional Information
- Copyright
- Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.