Reactor Antineutrino Anomaly Reanalysis in Context of Inverse-Square Law Violation

Naumov, Vadim A.; Shkirmanov, Dmitry S.

doi:10.3390/universe7070246

Reactor Antineutrino Anomaly Reanalysis in Context of Inverse-Square Law Violation

Vadim A. Naumov
(
- Dubna, JINR
)
,
Dmitry S. Shkirmanov
(
- Dubna, JINR
)

Jul 15, 2021

61 pages

Published in:

Universe 7 (2021) 7, 246

Published: Jul 15, 2021

DOI:

10.3390/universe7070246

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Abstract: (MDPI)

We discuss a possibility that the so-called reactor antineutrino anomaly (RAA), which is a deficit of the ν¯e rates in the reactor experiments in comparison to the theoretical expectations, can at least in part be explained by applying a quantum field-theoretical approach to neutrino oscillations, which in particular predicts a small deviation from the classical inverse-square law at short (but still macroscopic) distances between the neutrino source and detector. An extensive statistical analysis of the current reactor data on the integrated ν¯e event rates vs. baseline is performed to examine this speculation. The obtained results are applied to study another long-standing puzzle—gallium neutrino anomaly (GNA), which is a missing νe flux from 37Ar and 51Cr electron-capture decays as measured by the gallium–germanium solar neutrino detectors GALLEX and SAGE.

neutrino oscillations
reactor anomaly
gallium anomaly
nuclear fission
inverse beta decay
antineutrino flux
radioactive sources
11.25.Db
12.15.Ji
13.15.+g

References(238)

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