[SEMINARI] SEMINAR: Luis Alvarez Ruso, Neutrino-nucleus reactions at intermediate energies

[German Rodrigo Garcia]

Neutrino-nucleus reactions at intermediate energies

Luis Alvarez Ruso
U. Valencia & IFIC
Friday, 30 of March of 2007     12:00 PM
IFIC's Seminar

Abstract

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.