Supernova neutrino detection in NOvA
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Data
2020
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Resumo
The NOvA long-baseline neutrino experiment uses a pair of large, segmented,
liquid-scintillator calorimeters to study neutrino oscillations, using GeV-scale neutrinos from
the Fermilab NuMI beam. These detectors are also sensitive to the flux of neutrinos which are
emitted during a core-collapse supernova through inverse beta decay interactions on carbon
at energies of O(10 MeV). This signature provides a means to study the dominant mode of
energy release for a core-collapse supernova occurring in our galaxy. We describe the data driven software trigger system developed and employed by the NOvA experiment to identify
and record neutrino data from nearby galactic supernovae. This technique has been used by
NOvA to self-trigger on potential core-collapse supernovae in our galaxy, with an estimated
sensitivity reaching out to 10 kpc distance while achieving a detection efficiency of 23% to
49% for supernovae from progenitor stars with masses of 9.6 M to 27 M , respectively.
Descrição
Palavras-chave
Core-collapse supernovae, Supernova neutrinos, Neutrino experiments
Citação
ACERO, M. A. A. et al. Supernova neutrino detection in NOvA. Journal Of Cosmology And Astroparticle Physics, Bristol, v. 2020, e014, 2020. DOI: 10.1088/1475-7516/2020/10/014. Disponível em: https://iopscience.iop.org/article/10.1088/1475-7516/2020/10/014. Acesso em: 16 maio 2023.