On the interplay between Q^2 and t dependence in exclusive diffractive production of real photons and vector mesons in ep collisions
We show how the familiar phenomenological way of combining the Q2 (photon virtuality) and t (squared momentum transfer) dependences of the scattering amplitude in Deeply Virtual Compton Scattering (DVCS) [1, 2] and Vector Meson Production (VMP) [2] processes can be understood in an off-mass-shell ge...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/50664 |
| Acceso en línea: | https://hdl.handle.net/2445/50664 |
| Access Level: | acceso abierto |
| Palabra clave: | Física nuclear Partícules (Física nuclear) Fotons Col·lisions (Física nuclear) Nuclear physics Particles (Nuclear physics) Photons Collisions (Nuclear physics) |
| Sumario: | We show how the familiar phenomenological way of combining the Q2 (photon virtuality) and t (squared momentum transfer) dependences of the scattering amplitude in Deeply Virtual Compton Scattering (DVCS) [1, 2] and Vector Meson Production (VMP) [2] processes can be understood in an off-mass-shell generalization of dual amplitudes with Mandelstam analyticity [3]. By comparing different approaches, we managed also to constrain the numerical values of the free parameters. |
|---|