2017-07-172017-07-172004-08-18Ruiz Simo, I., Albertus, C., Amaro Soriano, J.E., Barbaro, M.B., Caballero Carretero, J.A. y Donnelly, T.W. (2004). Relativistic effects in two-particle emission for electron and neutrino reactions. Physical Review D - Particles, Fields, Gravitation and Cosmology, 90 (3), 033012-1-033012-23.1550-7998 (impreso)1550-2368 (electrónico)http://hdl.handle.net/11441/62586Two-particle two-hole contributions to electroweak response functions are computed in a fully relativistic Fermi gas, assuming that the electroweak current matrix elements are independent of the kinematics. We analyze the genuine kinematical and relativistic effects before including a realistic meson-exchange current operator. This allows one to study the mathematical properties of the nontrivial seven-dimensional integrals appearing in the calculation and to design an optimal numerical procedure to reduce the computation time. This is required for practical applications to charged-current neutrino scattering experiments, in which an additional integral over the neutrino flux is performed. Finally, we examine the viability of this model to compute the electroweak two-particle–two-hole response functions.application/pdfengAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess10.1103/PhysRevD.90.033012