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Abstract <p>Calibration experiments with artificial neutrino sources <sup>51</sup>Cr and <sup>37</sup>Ar in the gallium solar neutrino experiments SAGE and GALLEX showed a neutrino capture rate significantly lower than expected. This result, known as the gallium anomaly, was later confirmed at a significance level of more than 4σ in the BEST experiment on the UNU GGNT with a <sup>51</sup>Cr source. For a detailed study of the gallium anomaly, the BEST-2 experiment on a gallium target with an artificial source of <sup>58</sup>Co is proposed.</p>

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Gallium Anomaly and the BEST-2 Experiment with a 58Co Source

  • 期刊论文

  • 发表日期：

    2025年6月27日

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  • V. N. Gavrin,
  • V. V. Gorbachev,
  • T. V. Ibragimova,
  • V. A. Matveev

摘要

Abstract

Calibration experiments with artificial neutrino sources 51Cr and 37Ar in the gallium solar neutrino experiments SAGE and GALLEX showed a neutrino capture rate significantly lower than expected. This result, known as the gallium anomaly, was later confirmed at a significance level of more than 4σ in the BEST experiment on the UNU GGNT with a 51Cr source. For a detailed study of the gallium anomaly, the BEST-2 experiment on a gallium target with an artificial source of 58Co is proposed.