Combined analysis of all three phases of solar neutrino data from the Sudbury Neutrino Observatory

By B. Aharmim, S. N. Ahmed, A. Anthony, N. Barros, E. Beier, A. Bellerive, B. Beltrán, M. Bergevin, S. Biller, K. Boudjemline and 113 more. 2011

406 citations recorded by the source corpus.

We report results from a combined analysis of solar neutrino data from all phases of the Sudbury Neutrino Observatory. By exploiting particle identification information obtained from the proportional counters installed during the third phase, this analysis improved background rejection in that phase of the experiment. The combined analysis resulted in a total flux of active neutrino flavors from 8B decays in the Sun of (5.25 \pm 0.16(stat.)+0.11-0.13(syst.))\times10^6 cm^{-2}s^{-1}. A two-flavor neutrino oscillation analysis yielded \Deltam^2_{21} = (5.6^{+1.9}_{-1.4})\times10^{-5} eV^2 and tan^2{\theta}_{12}= 0.427^{+0.033}_{-0.029}. A three-flavor neutrino oscillation analysis combining this result with results of all other solar neutrino experiments and the KamLAND experiment yielded \Deltam^2_{21} = (7.41^{+0.21}_{-0.19})\times10^{-5} eV^2, tan^2{\theta}_{12} = 0.446^{+0.030}_{-0.029}, and sin^2{\theta}_{13} =(2.5^{+1.8}_{-1.5})\times10^{-2}. This implied an upper bound of sin^2{\theta}_{13} < 0.053 at the 95% confidence level (C.L.).

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/de13765133584ebc2b56dcf000b2fe4c444f6998

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Citations in the corpus

• Global analysis of three-flavour neutrino oscillations: synergies and tensions in the determination of θ23, δCP, and the mass ordering (2018, background): “• SNO combined analysis [64], 7 data points.”
• 2020 global reassessment of the neutrino oscillation picture (2020, methodology): “Finally, we also include the last results from the Sudbury Neutrino Observatory (SNO), combining the solar neutrino data from the three phases of the experiment [41].”
• JUNO physics and detector (2021, methodology): “20)×106 cm−2s−1 according to the NC measurement of SNO [44], and the flux of hep neutrinos is fixed to 8.”
• Updated fit to three neutrino mixing: exploring the accelerator-reactor complementarity (2016, methodology): “In the analysis of solar neutrino data we consider the total rates from the radiochemical experiments Chlorine [15], Gallex/GNO [16] and SAGE [17], the results for the four phases of Super-Kamiokande [18–22], the data of the three phases of SNO included in the form of the parametrization presented i”
• Updated fit to three neutrino mixing: status of leptonic CP violation (2014, background): “The results of the three phases of SNO are included in terms of the parametrization given in their combined analysis [26] which amount to 7 data points.”
• Current Status and Future Prospects of the SNO+ Experiment (2015, methodology): “Flat continuum background from the elastically scattered (ES) electrons normalized using the total (8)B flux and published solar mixing parameters [42].”
• A New Generation of Standard Solar Models (2016, methodology): “…al. (2016) includes in their analysis the Borexino Phase-2 data (BOREXINO Collaboration et al. 2014), the combined analysis of all three SNO phases (Aharmim et al. 2013) and results from phase IV of Super-Kamiokande (Super-Kamiokande Collaboration et al. 2016) all of which were not available in…”
• Flavor structures of charged fermions and massive neutrinos (2019, background): “In fact, the Super-Kamiokande [66, 387] and SNO [65, 67, 388] experiments have measured the flux of solar 8B neutrinos to a much better degree of accuracy.”
• 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”
• Sterile neutrino oscillations: the global picture (2013, background): “ta from all the Super-Kamiokande phases I{IV [128{131] and the data from the three phases of SNO [132{134], including the results on the low energy threshold analysis of the combined SNO phases I{III [135]. We also include the main set of the 740.7 days of Borexino data [136] as well as their high-e”
• Determination of matter potential from global analysis of neutrino oscillation data (2013, methodology): “um of SNO-II [68] and the three total rates of SNO-III [69]. We label this analysis as SNO-data. Second, we use the results of their the low energy threshold analysis of the combined SNO phases I{III [70] which is given in the form of an eective MSW-like polynomial parametrization for the day and ni”