Speaker
Description
The stable iodine and caesium isotopes are the primary constituents of the
CsI[Na] neutrino detector operational from 2015 to 2019 at the SNS. Theoretically
computed cross sections for these nuclei are therefore of considerable
interest. The goal of the research outlined in this abstract was to obtain accurate
theoretical scattering cross sections along with nuclear de-excitation data
for stopped pion neutrino scattering off these nuclei. The nuclear model employed
was a hybrid approach where the shell model was used to model the
low-lying states of the nuclei, while the microscopic quasiparticle-phonon model
(MQPM) was used for states higher in energy. This led to a realistic description
of the nuclear spectra up to energies relevant for the scattering reactions
without sacrificing the accuracy at the low-energy end. The computed results
included the scattering cross sections for all flavours of neutrinos produced in
pion decay. In addition to these, nuclear de-excitation profiles were obtained by
using a Monte Carlo event generator for neutrino-nucleus interactions.
