| Revista: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000344270 |
| ISSN: | 0103-9733 |
| Autores: | Kopeliovich, B.Z1 Rezaeian, A.H1 Schmidt, Iván1 |
| Instituciones: | 1Universidad Técnica Federico Santa María, Centro de Estudios Subatómicos, Valparaíso. Chile |
| Año: | 2008 |
| Periodo: | Sep |
| Volumen: | 38 |
| Número: | 3B |
| Paginación: | 443-448 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Conferencia o discurso |
| Enfoque: | Analítico, descriptivo |
| Resumen en inglés | The azimuthal asymmetry of direct photons originating from primary hard scatterings between partons is calculated. This can be accounted for by the inclusion of the color dipole orientation, which is sensitive to the rapid variation of the nuclear profile. To this end we introduce the dipole orientation within the saturation model of Golec-Biernat and W¨usthoff, while preserving all its features at the cross-section level. We show that the direct photon elliptic anisotropy v2 coming from this mechanism changes sign and becomes negative for peripheral collisions, albeit it is quite small for nuclear collisions at the RHIC energy |
| Disciplinas: | Física y astronomía |
| Palabras clave: | Física de partículas y campos cuánticos, Colisiones de iones pesados, Fotones directos, Asimetría azimuthal |
| Keyword: | Physics and astronomy, Particle physics and quantum fields, Heavy ion collisions, Direct photons, Azimuthal asymmetry |
| Texto completo: | Texto completo (Ver PDF) |
