JUNO's initial results combined with global data give a 2.2-2.3 sigma preference for normal neutrino mass ordering.
On the determination of anti-neutrino spectra from nuclear reactors
7 Pith papers cite this work. Polarity classification is still indexing.
7
Pith papers citing it
abstract
In this paper we study the effect of, well-known, higher order corrections to the allowed beta decay spectrum on the determination of anti-neutrino spectra resulting from the decays of fission fragments. In particular, we try to estimate the associated theory errors and find that induced currents like weak magnetism may ultimately limit our ability to improve the current accuracy and under certain circumstance could even largely increase the theoretical errors. We also perform a critical evaluation of the errors associated with our method to extract the anti-neutrino spectrum using synthetic beta spectra. It turns out, that a fit using only virtual beta branches with a judicious choice of the effective nuclear charge provides results with a minimal bias. We apply this method to actual data for U235, Pu239 and Pu241 and confirm, within errors, recent results, which indicate a net 3% upward shift in energy averaged anti-neutrino fluxes. However, we also find significant shape differences which can in principle be tested by high statistics anti-neutrino data samples.
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representative citing papers
A simulation study reports that channel- and tile-level calibration procedures can keep SiPM parameter biases below a few percent in the JUNO-TAO central detector, with a new LED-based switching method for external optical crosstalk.
Thermal spectra can be produced by certain classes of emission kernels without probe thermalization, as when the differential cross section depends on angle but not on the Mandelstam variable s, providing a kernel-based criterion to distinguish genuine equilibrium from kernel artifacts.
JUNO slow-mode data mildly prefer nonzero β_M1 (hinting Majorana neutrinos), while fast-mode RG shifts from β_D and β_M3 degrade mass-ordering sensitivity that TAO can restore.
PRISM multi-angle measurements in DUNE restore sensitivity to non-unitarity and sterile neutrinos in electron and muon sectors to levels achievable with small spectral uncertainties, with only marginal gains for tau neutrinos.
The reactor antineutrino anomaly is revived to 2.2 sigma with the 2023 flux calculation, showing 3.8 sigma tension with gallium data that drops to 1.3 sigma when gallium uncertainties are enlarged.
Updated nuclear calculations lower the gallium anomaly significance to 2.3σ.
citing papers explorer
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Lessons from the first JUNO results
JUNO's initial results combined with global data give a 2.2-2.3 sigma preference for normal neutrino mass ordering.
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Calibration Methods of Silicon Photomultiplier for JUNO-TAO Central Detector
A simulation study reports that channel- and tile-level calibration procedures can keep SiPM parameter biases below a few percent in the JUNO-TAO central detector, with a new LED-based switching method for external optical crosstalk.
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Thermal Spectra Without Detailed Balance
Thermal spectra can be produced by certain classes of emission kernels without probe thermalization, as when the differential cross section depends on angle but not on the Mandelstam variable s, providing a kernel-based criterion to distinguish genuine equilibrium from kernel artifacts.
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Disentangle RG Running Parameters with Medium-Baseline Reactor Experiments
JUNO slow-mode data mildly prefer nonzero β_M1 (hinting Majorana neutrinos), while fast-mode RG shifts from β_D and β_M3 degrade mass-ordering sensitivity that TAO can restore.
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Sharpening New Physics Searches in Neutrino Oscillations with DUNE-PRISM
PRISM multi-angle measurements in DUNE restore sensitivity to non-unitarity and sterile neutrinos in electron and muon sectors to levels achievable with small spectral uncertainties, with only marginal gains for tau neutrinos.
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Revival of the Reactor Antineutrino Anomaly
The reactor antineutrino anomaly is revived to 2.2 sigma with the 2023 flux calculation, showing 3.8 sigma tension with gallium data that drops to 1.3 sigma when gallium uncertainties are enlarged.
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The gallium anomaly revisited
Updated nuclear calculations lower the gallium anomaly significance to 2.3σ.