PT Journal
AU DUNE Collaboration (Abud, AAea
   Amedo, P
   Antonova, M
   Barenboim, G
   Benitez Montiel, C
   Cervera-Villanueva, A
   De Romeri, V
   Garcia-Peris, MA
   Lopez March, N
   Martin-Albo, J
   Martinez Mirave, P
   Mena, O
   Molina Bueno, L
   Novella, P
   Pompa, F
   Rocabado Rocha, JL
   Sorel, M
   Soto-Oton, J
   Tortola, M
   Tuzi, M
   Valle, JWF
   Yahlali, N
TI Impact of cross-section uncertainties on supernova neutrino spectral parameter fitting in the Deep Underground Neutrino Experiment
SO Physical Review D
JI Phys. Rev. D
PY 2023
BP 112012
EP 25pp
VL 107
IS 11
DI 10.1103/PhysRevD.107.112012
LA English
AB A primary goal of the upcoming Deep Underground Neutrino Experiment (DUNE) is to measure the Oo10 thorn MeV neutrinos produced by a Galactic core-collapse supernova if one should occur during the lifetime of the experiment. The liquid-argon-based detectors planned for DUNE are expected to be uniquely sensitive to the & nu;e component of the supernova flux, enabling a wide variety of physics and astrophysics measurements. A key requirement for a correct interpretation of these measurements is a good understanding of the energy-dependent total cross section & sigma;oE & nu; thorn for charged-current & nu;e absorption on argon. In the context of a simulated extraction of supernova & nu;e spectral parameters from a toy analysis, we investigate the impact of & sigma;oE & nu; thorn modeling uncertainties on DUNE's supernova neutrino physics sensitivity for the first time. We find that the currently large theoretical uncertainties on & sigma;oE & nu; thorn must be substantially reduced before the & nu;e flux parameters can be extracted reliably; in the absence of external constraints, a measurement of the integrated neutrino luminosity with less than 10% bias with DUNE requires & sigma;oE & nu; thorn to be known to about 5%. The neutrino spectral shape parameters can be known to better than 10% for a 20% uncertainty on the cross-section scale, although they will be sensitive to uncertainties on the shape of & sigma;oE & nu; thorn . A direct measurement of low-energy & nu;e-argon scattering would be invaluable for improving the theoretical precision to the needed level.
ER