Initial measurement of reactor antineutrino oscillation at SNO+

Abstract The SNO $$+$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>+</mml:mo> </mml:math> collaboration reports its first spectral analysis of long-baseline reactor antineutrino oscillation using 114 tonne-years of data. Fitting the neutrino oscillation probability to the observed energy spectrum yields constraints on the neutrino mass-squared difference $$\Delta m^2_{21}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Δ</mml:mi> <mml:msubsup> <mml:mi>m</mml:mi> <mml:mn>21</mml:mn> <mml:mn>2</mml:mn> </mml:msubsup> </mml:mrow> </mml:math> . In the ranges allowed by previous measurements, the best-fit $$\Delta m^2_{21}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Δ</mml:mi> <mml:msubsup> <mml:mi>m</mml:mi> <mml:mn>21</mml:mn> <mml:mn>2</mml:mn> </mml:msubsup> </mml:mrow> </mml:math> is ( $$8.85^{+1.10}_{-1.33}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>8</mml:mn> <mml:mo>.</mml:mo> <mml:msubsup> <mml:mn>85</mml:mn> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1.33</mml:mn> </mml:mrow> <mml:mrow> <mml:mo>+</mml:mo> <mml:mn>1.10</mml:mn> </mml:mrow> </mml:msubsup> </mml:mrow> </mml:math> ) $$\times $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>×</mml:mo> </mml:math> $$10^{-5}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mn>10</mml:mn> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>5</mml:mn> </mml:mrow> </mml:msup> </mml:math> $$\hbox {eV}^2$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mtext>eV</mml:mtext> <mml:mn>2</mml:mn> </mml:msup> </mml:math> . This measurement is continuing in the next phases of SNO+ and is expected to surpass the present global precision on $$\Delta m^2_{21}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Δ</mml:mi> <mml:msubsup> <mml:mi>m</mml:mi> <mml:mn>21</mml:mn> <mml:mn>2</mml:mn> </mml:msubsup> </mml:mrow> </mml:math> with about three years of data.

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Publication Details

Journal
The European Physical Journal C
Published
2025-01-10
DOI
https://doi.org/10.1140/epjc/s10052-024-13687-5
Citations
4
Primary Topic
Neutrino Physics Research
Type
article
Field-Weighted Citation Impact
7.48

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Initial measurement of reactor antineutrino oscillation at SNO+

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Initial measurement of reactor antineutrino oscillation at SNO+

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article en
4 citations

Abstract

Abstract The SNO $$+$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>+</mml:mo> </mml:math> collaboration reports its first spectral analysis of long-baseline reactor antineutrino oscillation using 114 tonne-years of data. Fitting the neutrino oscillation probability to the observed energy spectrum yields constraints on the neutrino mass-squared difference $$\Delta m^2_{21}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Δ</mml:mi> <mml:msubsup> <mml:mi>m</mml:mi> <mml:mn>21</mml:mn> <mml:mn>2</mml:mn> </mml:msubsup> </mml:mrow> </mml:math> . In the ranges allowed by previous measurements, the best-fit $$\Delta m^2_{21}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Δ</mml:mi> <mml:msubsup> <mml:mi>m</mml:mi> <mml:mn>21</mml:mn> <mml:mn>2</mml:mn> </mml:msubsup> </mml:mrow> </mml:math> is ( $$8.85^{+1.10}_{-1.33}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>8</mml:mn> <mml:mo>.</mml:mo> <mml:msubsup> <mml:mn>85</mml:mn> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1.33</mml:mn> </mml:mrow> <mml:mrow> <mml:mo>+</mml:mo> <mml:mn>1.10</mml:mn> </mml:mrow> </mml:msubsup> </mml:mrow> </mml:math> ) $$\times $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>×</mml:mo> </mml:math> $$10^{-5}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mn>10</mml:mn> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>5</mml:mn> </mml:mrow> </mml:msup> </mml:math> $$\hbox {eV}^2$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mtext>eV</mml:mtext> <mml:mn>2</mml:mn> </mml:msup> </mml:math> . This measurement is continuing in the next phases of SNO+ and is expected to surpass the present global precision on $$\Delta m^2_{21}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Δ</mml:mi> <mml:msubsup> <mml:mi>m</mml:mi> <mml:mn>21</mml:mn> <mml:mn>2</mml:mn> </mml:msubsup> </mml:mrow> </mml:math> with about three years of data.

The European Physical Journal CVol. 85(1)
Boston University (US), TRIUMF (CA), Fermi National Accelerator Laboratory (US), University of Lisbon (PT), University of Liverpool (GB), Lawrence Berkeley National Laboratory (US), Shandong University (CN), University of Alberta (CA), University of Sussex (GB), King's College London (GB), Brookhaven National Laboratory (US), Queen's University (CA), LIP - Laboratory of Instrumentation and Experimental Particle Physics (PT), California University of Pennsylvania (US), University of Oxford (GB), University of Chicago (US), Laurentian University (CA), Lancaster University (GB), University of Coimbra (PT), Technische Universität Dresden (DE), University of Pennsylvania (US), Shandong University of Science and Technology (CN), University of California, Davis (US), Universidad Nacional Autónoma de México (MX), University of California, Berkeley (US)
National Science Foundation, U.S. Department of Energy, Shandong University, Deutsche Forschungsgemeinschaft, Consejo Nacional de Ciencia y Tecnología, Queen's University, Ontario Ministry of Research, Innovation and Science, Alliance de recherche numérique du Canada, National Nuclear Security Administration, Natural Sciences and Engineering Research Council of Canada, Science and Technology Facilities Council, Fundação para a Ciência e a Tecnologia, Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México, Nuclear Physics, Fermilab
Openalex Percentile: Top 4%
Neutrino Physics Research
7.48
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