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Investigating the Spectral Anomaly with Different Reactor Antineutrino Experiments

MPG-Autoren
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Buck,  Christian
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Collin,  Antoine
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Haser,  Julia Anna
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Lindner,  Manfred
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Volltexte (frei zugänglich)

1512.06656.pdf
(Preprint), 351KB

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Zitation

Buck, C., Collin, A., Haser, J. A., & Lindner, M. (2016). Investigating the Spectral Anomaly with Different Reactor Antineutrino Experiments. Physics Letters B, 765, 159-162. doi:10.1016/j.physletb.2016.11.062.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-002C-3C07-4
Zusammenfassung
The spectral shape of reactor antineutrinos measured in recent experiments shows anomalies in comparison to neutrino reference spectra. New precision measurements of the reactor neutrino spectra as well as more complete input in nuclear data bases are needed to resolve the observed discrepancies between models and experimental results. This article proposes the combination of experiments at reactors which are highly enriched in ${}^{235}$U with commercial reactors with typically lower enrichment to gain new insights into the origin of the anomalous neutrino spectrum. The presented method clarifies, if the spectral anomaly is either solely or not at all related to the predicted ${}^{235}$U spectrum. Considering the current improvements of the energy scale uncertainty of present-day experiments, a significance of three sigma and above can be reached. As an example, we discuss the option of a direct comparison of the measured shape in the currently running Double Chooz near detector and the upcoming Stereo experiment. A quantitative feasibility study emphasizes that a precise understanding of the energy scale systematics is a crucial prerequisite in recent and next generation experiments investigating the spectral anomaly.