DUNE as the Next-Generation Solar Neutrino Experiment

Francesco Capozzi (Center for Cosmology and AstroParticle Physics (CCAPP), Ohio State University, Columbus, Ohio 43210, USA; Department of Physics, Ohio State University, Columbus, Ohio 43210, USA; Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), 80805 München, Germany) ; Shirley Weishi Li (Center for Cosmology and AstroParticle Physics (CCAPP), Ohio State University, Columbus, Ohio 43210, USA; Department of Physics, Ohio State University, Columbus, Ohio 43210, USA; SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA) ; Guanying Zhu (Center for Cosmology and AstroParticle Physics (CCAPP), Ohio State University, Columbus, Ohio 43210, USA; Department of Physics, Ohio State University, Columbus, Ohio 43210, USA) ; John F. Beacom (Center for Cosmology and AstroParticle Physics (CCAPP), Ohio State University, Columbus, Ohio 43210, USA; Department of Physics, Ohio State University, Columbus, Ohio 43210, USA; Department of Astronomy, Ohio State University, Columbus, Ohio 43210, USA)

We show that the Deep Underground Neutrino Experiment (DUNE), with significant but feasible new efforts, has the potential to deliver world-leading results in solar neutrinos. With a 100 ktonyr exposure, DUNE could detect 105 signal events above 5 MeV electron energy. Separate precision measurements of neutrino-mixing parameters and the B8 flux could be made using two detection channels (νe+Ar40 and νe,μ,τ+e) and the day-night effect (>10σ). New particle physics may be revealed through the comparison of solar neutrinos (with matter effects) and reactor neutrinos (without), which is discrepant by 2σ (and could become 5.6σ). New astrophysics may be revealed through the most precise measurement of the B8 flux (to 2.5%) and the first detection of the hep flux (to 11%). DUNE is required: No other experiment, even proposed, has been shown capable of fully realizing these discovery opportunities.

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      "source": "APS", 
      "value": "We show that the Deep Underground Neutrino Experiment (DUNE), with significant but feasible new efforts, has the potential to deliver world-leading results in solar neutrinos. With a <math><mrow><mn>100</mn><mtext> </mtext><mtext> </mtext><mi>kton</mi><mtext>\u2212</mtext><mi>yr</mi></mrow></math> exposure, DUNE could detect <math><mo>\u2273</mo><msup><mn>10</mn><mn>5</mn></msup></math> signal events above 5 MeV electron energy. Separate precision measurements of neutrino-mixing parameters and the <math><mrow><mmultiscripts><mrow><mi>B</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>8</mn></mrow></mmultiscripts></mrow></math> flux could be made using two detection channels (<math><mrow><msub><mrow><mi>\u03bd</mi></mrow><mrow><mi>e</mi></mrow></msub><mo>+</mo><mmultiscripts><mrow><mi>Ar</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>40</mn></mrow></mmultiscripts></mrow></math> and <math><mrow><msub><mrow><mi>\u03bd</mi></mrow><mrow><mi>e</mi><mo>,</mo><mi>\u03bc</mi><mo>,</mo><mi>\u03c4</mi></mrow></msub><mo>+</mo><msup><mrow><mi>e</mi></mrow><mrow><mo>\u2212</mo></mrow></msup></mrow></math>) and the day-night effect (<math><mo>&gt;</mo><mn>10</mn><mi>\u03c3</mi></math>). New particle physics may be revealed through the comparison of solar neutrinos (with matter effects) and reactor neutrinos (without), which is discrepant by <math><mo>\u223c</mo><mn>2</mn><mi>\u03c3</mi></math> (and could become <math><mn>5.6</mn><mi>\u03c3</mi></math>). New astrophysics may be revealed through the most precise measurement of the <math><mrow><mmultiscripts><mrow><mi>B</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>8</mn></mrow></mmultiscripts></mrow></math> flux (to 2.5%) and the first detection of the hep flux (to 11%). DUNE is required: No other experiment, even proposed, has been shown capable of fully realizing these discovery opportunities."
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Published on:
27 September 2019
Publisher:
APS
Published in:
Physical Review Letters , Volume 123 (2019)
Issue 13
DOI:
https://doi.org/10.1103/PhysRevLett.123.131803
arXiv:
1808.08232
Copyrights:
Published by the American Physical Society
Licence:
CC-BY-4.0

Fulltext files: