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arXiv · 2303.17007

Impact of cross-section uncertainties on supernova neutrino spectral parameter fitting in the Deep Underground Neutrino Experiment

DUNE Collaboration·A. Abed Abud·B. Abi·R. Acciarri·M. A. Acero·M. R. Adames·G. Adamov·M. Adamowski·D. Adams·M. Adinolfi·C. Adriano·A. Aduszkiewicz·J. Aguilar·Z. Ahmad·J. Ahmed·B. Aimard·F. Akbar·K. Allison·S. Alonso Monsalve·M. Alrashed·A. Alton·R. Alvarez·P. Amedo·J. Anderson·D. A. Andrade·C. Andreopoulos·M. Andreotti·M. P. Andrews·F. Andrianala·S. Andringa·N. Anfimov·W. L. Anicézio Campanelli·A. Ankowski·M. Antoniassi·M. Antonova·A. Antoshkin·A. Aranda-Fernandez·L. Arellano·L. O. Arnold·M. A. Arroyave·J. Asaadi·A. Ashkenazi·L. Asquith·E. Atkin·D. Auguste·A. Aurisano·V. Aushev·D. Autiero·M. Ayala-Torres·F. Azfar·A. Back·H. Back·J. J. Back·I. Bagaturia·L. Bagby·N. Balashov·S. Balasubramanian·P. Baldi·W. Baldini·B. Baller·B. Bambah·R. Banerjee·F. Barao·G. Barenboim·P. Barham Alzás·G. J. Barker·W. Barkhouse·C. Barnes·G. Barr·J. Barranco Monarca·A. Barros·N. Barros·J. L. Barrow·A. Basharina-Freshville·A. Bashyal·V. Basque·C. Batchelor·J. B. R. Battat·F. Battisti·F. Bay·M. C. Q. Bazetto·J. L. L. Bazo Alba·J. F. Beacom·E. Bechetoille·B. Behera·E. Belchior·G. Bell·L. Bellantoni·G. Bellettini·V. Bellini·O. Beltramello·N. Benekos·C. Benitez Montiel·D. Benjamin·F. Bento Neves·J. Berger·S. Berkman·P. Bernardini·R. M. Berner·A. Bersani
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Abstract

A primary goal of the upcoming Deep Underground Neutrino Experiment (DUNE) is to measure the $\mathcal{O}(10)$ 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 $ν_e$ 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 $σ(E_ν)$ for charged-current $ν_e$ absorption on argon. In the context of a simulated extraction of supernova $ν_e$ spectral parameters from a toy analysis, we investigate the impact of $σ(E_ν)$ modeling uncertainties on DUNE's supernova neutrino physics sensitivity for the first time. We find that the currently large theoretical uncertainties on $σ(E_ν)$ must be substantially reduced before the $ν_e$ 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 $σ(E_ν)$ 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 $σ(E_ν)$. A direct measurement of low-energy $ν_e$-argon scattering would be invaluable for improving the theoretical precision to the needed level.

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DUNE Collaboration, A. Abed Abud, B. Abi, R. Acciarri, M. A. Acero, M. R. Adames, G. Adamov, M. Adamowski, D. Adams, M. Adinolfi, C. Adriano, A. Aduszkiewicz, J. Aguilar, Z. Ahmad, J. Ahmed, B. Aimard, F. Akbar, K. Allison, S. Alonso Monsalve, M. Alrashed, A. Alton, R. Alvarez, P. Amedo, J. Anderson, D. A. Andrade, C. Andreopoulos, M. Andreotti, M. P. Andrews, F. Andrianala, S. Andringa, N. Anfimov, W. L. Anicézio Campanelli, A. Ankowski, M. Antoniassi, M. Antonova, A. Antoshkin, A. Aranda-Fernandez, L. Arellano, L. O. Arnold, M. A. Arroyave, J. Asaadi, A. Ashkenazi, L. Asquith, E. Atkin, D. Auguste, A. Aurisano, V. Aushev, D. Autiero, M. Ayala-Torres, F. Azfar, A. Back, H. Back, J. J. Back, I. Bagaturia, L. Bagby, N. Balashov, S. Balasubramanian, P. Baldi, W. Baldini, B. Baller, B. Bambah, R. Banerjee, F. Barao, G. Barenboim, P. Barham Alzás, G. J. Barker, W. Barkhouse, C. Barnes, G. Barr, J. Barranco Monarca, A. Barros, N. Barros, J. L. Barrow, A. Basharina-Freshville, A. Bashyal, V. Basque, C. Batchelor, J. B. R. Battat, F. Battisti, F. Bay, M. C. Q. Bazetto, J. L. L. Bazo Alba, J. F. Beacom, E. Bechetoille, B. Behera, E. Belchior, G. Bell, L. Bellantoni, G. Bellettini, V. Bellini, O. Beltramello, N. Benekos, C. Benitez Montiel, D. Benjamin, F. Bento Neves, J. Berger, S. Berkman, P. Bernardini, R. M. Berner, A. Bersani. 2023-07-07. Impact of cross-section uncertainties on supernova neutrino spectral parameter fitting in the Deep Underground Neutrino Experiment. https://doi.org/10.1103/physrevd.107.112012

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