Neutrino-nucleus reactions at intermediate energies

por Luis Alvarez Ruso (U. Valencia & IFIC)

viernes 30 mar. 2007 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

We have performed a theoretical study of charged and neutral current neutrino-nucleus interactions in the neutrino energy region of interest for current (K2K, MiniBooNE) and future (MINERvA, FINeSSE) experiments. At these energies, the dominant elementary mechanisms are quasielastic scattering and the excitation of the Delta(1232) resonance. We describe neutrino nucleon collisions with a relativistic formalism which incorporates empirical parameterizations of the form factors for both the nucleon and the N-Delta transition. Then, we take into account the effect of the nuclear medium: Fermi motion, Pauli blocking , nuclear binding and the the in-medium modification of the Delta resonance. Final state interactions are implemented by means of a coupled-channel semiclassical transport model which allows us to study exclusive channels such as pion production and nucleon knockout. We have also investigated the role of polarization effects(nuclear RPA correlations) in the specific conditions of the MiniBooNE experiment. Finally, we have studied coherent pion production, taking proper care of the distortion of the outgoing pion by solving the Klein-Gordon equation with a realistic pion-nucleus optical potential.