Reanalysis of the GALLEX solar neutrino flux and source experiments

By F. Kaether, W. Hampel, G. Heusser, J. Kiko, T. Kirsten. 2010

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Abstract After the completion of the gallium solar neutrino experiments at the Laboratori Nazionali del Gran Sasso ( Gallex : 1991–1997; GNO: 1998–2003) we have retrospectively updated the Gallex results with the help of new technical data that were impossible to acquire for principle reasons before the completion of the low rate measurement phase (that is, before the end of the GNO solar runs). Subsequent high rate experiments have allowed the calibration of absolute internal counter efficiencies and of an advanced pulse shape analysis for counter background discrimination. The updated overall result for Gallex (only) is 73.4 − 7.3 + 7.1 SNU . This is 5.3% below the old value of 77.5 − 7.8 + 7.5 SNU ( Gallex Collaboration, W. Hampel et al., 1999 [1] ), with a substantially reduced error. A similar reduction is obtained from the reanalysis of the 51Cr neutrino source experiments of 1994/1995.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/412657ef853c3d42ed6ca3ad7af543486c02d5bc

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Citations in the corpus

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• Global fit to three neutrino mixing: critical look at present precision (2012, methodology): “Finally in the analysis of solar neutrino experiments we include the total rates from the radiochemical experiments Chlorine [32], Gallex/GNO [33] and SAGE [34].”
• A White Paper on keV sterile neutrino Dark Matter (2016, background): “In brief, at present we have observed neutrino oscillation effects in: • atmospheric neutrinos, in particular in the high-statistics results of Super-Kamiokande [90]; • event rates of solar neutrino radiochemical experiments Chlorine [91], GALLEX/GNO [92], and SAGE [93], as well as time- and energy-”
• Neutrino Oscillations and Non-standard Interactions (2017, methodology): “Solar neutrino analysis include the historical radiochemical experiments Homestake [42], Gallex/GNO [43], SAGE [44], sensitive only to the interaction rate of electron neutrinos, but not to their energy or arrival time to the detector.”
• Updated global analysis of neutrino oscillations in the presence of eV-scale sterile neutrinos (2018, methodology): “[74] F. Kaether, W. Hampel, G. Heusser, J. Kiko, and T. Kirsten, Reanalysis of the GALLEX solar neutrino flux and source experiments, Phys.”
• Determination of matter potential from global analysis of neutrino oscillation data (2013, methodology): “In the analysis of solar neutrino experiments we include the total rates from the radiochemical experiments Chlorine [58], Gallex/GNO [59] and SAGE [60].”
• Global Analyses of Neutrino Oscillation Experiments (2015, background): “In brief, at present we have observed neutrino oscillation effects in: • atmospheric neutrinos, in particular in the high-statistics results of Super-Kamiokande [4]; • event rates of solar neutrino radiochemical experiments Chlorine [5], Gallex/GNO [6] and SAGE [7], as well as time and energy depend”
• Deep Underground Neutrino Experiment (DUNE), Far Detector Technical Design Report, Volume II: DUNE Physics (2020, methodology): “The complete data set used, as well as the parameters to which they are sensitive, are (1) from solar neutrino data [298, 413, 414, 415, 416, 417, 418, 419, 420, 421]: θ12, ∆m(2)21, and θ13; (2) from neutrino mode in long-baseline experiments K2K [422], MINOS [423, 424], T2K [425, 426], and NOνA [42”
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• Updated fit to three neutrino mixing: status of leptonic CP violation (2014, methodology): “In the analysis of solar neutrino experiments we include the total rates from the ra- diochemical experiments Chlorine [19], Gallex/GNO [20] and SAGE [21].”
• Updated constraints on non-standard interactions from global analysis of oscillation data (2018, methodology): “In the analysis of solar neutrino data we consider the total rates from the radiochemical experiments Chlorine [41], Gallex/GNO [42] and SAGE [43], the results for the four phases of Super-Kamiokande [44–47] (including the 2055 days separate day and night spectra from Ref.”
• Where are we with light sterile neutrinos? (2019, methodology): “As a result, PROSPECT is currently statistically limited. e. GALLEX [66] and SAGE [67]: A pair of Gallium-based experiments, SAGE and GALLEX, measured the solar neutrino flux by counting the interactions of νe with the gallium in the detectors.”
• Sterile Neutrino Fits to Short-Baseline Neutrino Oscillation Measurements (2012, methodology): “Indications of 𝜈 𝑒 disappearance have recently been published from calibration data taken by the SAGE [39] and GALLEX [40] experiments.”