A1 Journal article (refereed)
The gallium anomaly revisited (2019)
Kostensalo, J., Suhonen, J., Giunti, C., & Srivastava, P. C. (2019). The gallium anomaly revisited. Physics Letters B, 795, 542-547. https://doi.org/10.1016/j.physletb.2019.06.057
JYU authors or editors
Publication details
All authors or editors: Kostensalo, J.; Suhonen, J.; Giunti, C.; Srivastava, P. C.
Journal or series: Physics Letters B
ISSN: 0370-2693
eISSN: 1873-2445
Publication year: 2019
Volume: 795
Pages range: 542-547
Publisher: Elsevier
Publication country: Netherlands
Publication language: English
DOI: https://doi.org/10.1016/j.physletb.2019.06.057
Publication open access: Openly available
Publication channel open access: Open Access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67709
Web address of parallel published publication (pre-print): https://arxiv.org/abs/1906.10980
Additional information: Corrigendum to “The gallium anomaly revisited” [Phys. Lett. B 795 (2019) 542–547] https://doi.org/10.1016/j.physletb.2023.138190
Abstract
The gallium anomaly, i.e. the missing electron-neutrino flux from 37Ar and 51Cr electron-capture decays as measured by the GALLEX and SAGE solar-neutrino detectors, has been among us already for about two decades. We present here a new estimate of the significance of this anomaly based on cross-section calculations using nuclear shell-model wave functions obtained by exploiting recently developed two-nucleon interactions. The gallium anomaly of the GALLEX and SAGE experiments is found to be smaller than that obtained in previous evaluations, decreasing the significance from 3.0σ to 2.3σ. This result is compatible with the recent indication in favor of short-baseline disappearance due to small active-sterile neutrino mixing obtained from the combined analysis of the data of the NEOS and DANSS reactor experiments.
Keywords: nuclear physics
Free keywords: gallium anomaly; charged-current cross-sections; nuclear shell model; neutrino-nucleus interactions
Contributing organizations
Related projects
- Nuclear Theory for Fundamental Physics
- Suhonen, Jouni
- Research Council of Finland
Ministry reporting: Yes
Reporting Year: 2019
JUFO rating: 2