| Revista: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000408595 |
| ISSN: | 0103-9733 |
| Autors: | Rodrigues, T.E1 Arruda-Neto, J.D.T1 Mesa, J2 Garcia, C1 Shtejer, K1 Dale, D3 Nakagawa, I4 |
| Institucions: | 1Universidade de Sao Paulo, Instituto de Fisica, Sao Paulo. Brasil 2Universidade Estadual Paulista "Julio de Mesquita Filho", Departamento de Fisica e Biofisica, Botucatu, Sao Paulo. Brasil 3Idaho State University, Department of Physics, Pocatello, Idaho. Estados Unidos de América 4RIKEN, Wako, Saitama. Japón |
| Any: | 2006 |
| Període: | Dic |
| Volum: | 36 |
| Número: | 4B |
| Paginació: | 1366-1370 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | The in-medium influence on π0 photoproduction from spin zero nuclei is carefully studied in the GeV range using a straightforward Monte Carlo analysis. The calculation takes into account the relativistic nuclear recoil for coherent mechanisms (electromagnetic and nuclear amplitudes) plus a time dependent multi-collisional intranuclear cascade approach (MCMC) to describe the transport properties of mesons produced in the surroundings of the nucleon. A detailed analysis of the meson energy spectra for the photoproduction on 12C at 5.5 GeV indicates that both the Coulomb and nuclear coherent events are associated with a small energy transfer to the nucleus ( 5 MeV), while the contribution of the nuclear incoherent mechanism is vanishing small within this kinematical range. The angular distributions are dominated by the Primakoff peak at extreme forward angles, with the nuclear incoherent process being the most important contribution above θπ0 20. Such consistent Monte Carlo approach provides a suitable method to clean up nuclear backgrounds in some recent high precision experiments, such as the PrimEx experiment at the Jefferson Laboratory Facility |
| Disciplines | Física y astronomía |
| Paraules clau: | Física, Física nuclear, Piones |
| Keyword: | Physics and astronomy, Nuclear physics, Physics, Pions |
| Text complet: | Texto completo (Ver PDF) |
