On the origin of the reactor antineutrino anomalies in light of a new summation model with parameterized $\beta^-$ transitions

We investigate the possible origins of the reactor antineutrino anomalies in norm and shape within the framework of a summation model where $\beta^-$ transitions are simulated by a phenomenological model of Gamow-Teller $\beta$-decay strength. The general trends of divergence from the Huber-Mueller...

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Bibliographic Details
Published in:Physical review letters 2023-01, Vol.130
Main Authors: Letourneau, Alain, Savu, Vladimir, Lhuillier, David, Lasserre, Thierry, Materna, Thomas, Mention, Guillaume, Mougeot, Xavier, Onillon, Anthony, Périssé, Lorenzo, Vivier, Matthieu
Format: Article
Language:English
Subjects:
High Energy Physics - Phenomenology
Nuclear Theory
Physics
Online Access:Get full text
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Summary:We investigate the possible origins of the reactor antineutrino anomalies in norm and shape within the framework of a summation model where $\beta^-$ transitions are simulated by a phenomenological model of Gamow-Teller $\beta$-decay strength. The general trends of divergence from the Huber-Mueller model on the antineutrino side can be reproduced in both norm and shape. From the exact electron-antineutrino correspondence of the summation model, we predict similar distortions in the electron spectra, suggesting that biases on the reference spectra of fission electrons could be the cause of the anomalies.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.130.021801