Electron-neutrino charged-current interactions with xenon nuclei were modeled
in the nEXO neutrinoless double-beta decay detector ( 5-tonne, 90
^136Xe, 10
neutrinos. Predictions for event rates and detectable signatures were modeled
using the MARLEY event generator. We find good agreement between MARLEY's
predictions and existing theoretical calculations of the inclusive cross
sections at supernova neutrino energies. The interactions modeled by MARLEY
were simulated within the nEXO simulation framework and were run through an
example reconstruction algorithm to determine the detector's efficiency for
reconstructing these events. The simulated data, incorporating the detector
response, were used to study the ability of nEXO to reconstruct the incident
electron-neutrino spectrum and these results were extended to a larger xenon
detector of the same isotope enrichment. We estimate that nEXO will be able to
observe electron-neutrino interactions with xenon from supernovae as far as 5
to 8 kpc from earth, while the ability to reconstruct incident
electron-neutrino spectrum parameters from observed interactions in nEXO is
limited to closer supernovae.
