On the interplay between Q^2 and t dependence in exclusive diffractive production of real photons and vector mesons in ep collisions

Fiore, RobertoJenkovszky, Lázsló L.Lavorini, A.Magas, Volodymyr2014-02-272014-02-2720120503-1265https://hdl.handle.net/2445/50664We 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.8 p.application/pdfeng(c) Fiore, Roberto et al., 2012Física nuclearPartícules (Física nuclear)FotonsCol·lisions (Física nuclear)Nuclear physicsParticles (Nuclear physics)PhotonsCollisions (Nuclear physics)On the interplay between Q^2 and t dependence in exclusive diffractive production of real photons and vector mesons in ep collisionsinfo:eu-repo/semantics/article6215242014-02-27info:eu-repo/semantics/openAccess