Improved search for invisible modes of nucleon decay in water with the SNO+detector

A. Allega (Queen’s University, Department of Physics, Engineering Physics & Astronomy, Kingston, Ontario K7L 3N6, Canada) ; M. R. Anderson (Queen’s University, Department of Physics, Engineering Physics & Astronomy, Kingston, Ontario K7L 3N6, Canada) ; S. Andringa (Laboratório de Instrumentação e Física Experimental de Partículas (LIP), Av. Prof. Gama Pinto, 2, 1649-003, Lisboa, Portugal) ; M. Askins (University of California, Berkeley, Department of Physics, California 94720, Berkeley, USA; Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720-8153, USA) ; D. J. Auty (University of Alberta, Department of Physics, 4-181 CCIS, Edmonton, Alberta T6G 2E1, Canada) ; et al. - Show all 117 authors

This paper reports results from a search for single and multinucleon disappearance from the O16 nucleus in water within the SNO+ detector using all of the available data. These so-called “invisible” decays do not directly deposit energy within the detector but are instead detected through their subsequent nuclear deexcitation and gamma-ray emission. New limits are given for the partial lifetimes: τ(ninv)>9.0×1029 years, τ(pinv)>9.6×1029 years, τ(nninv)>1.5×1028 years, τ(npinv)>6.0×1028 years, and τ(ppinv)>1.1×1029 years at 90% Bayesian credibility level (with a prior uniform in rate). All but the (nninv) results improve on existing limits by a factor of about 3.

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      "affiliations": [
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          "country": "Germany", 
          "value": "Technische Universit\u00e4t Dresden, Institut f\u00fcr Kern und Teilchenphysik, Zellescher Weg 19, Dresden, 01069, Germany"
        }, 
        {
          "country": "Hungary", 
          "value": "MTA Atomki, 4001 Debrecen, Hungary"
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      ], 
      "surname": "Zuber", 
      "given_names": "K.", 
      "full_name": "Zuber, K."
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      "full_name": "Zummo, A."
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  "titles": [
    {
      "source": "APS", 
      "title": "Improved search for invisible modes of nucleon decay in water with the <math><mrow><mi>SNO</mi><mo>+</mo><mtext>detector</mtext></mrow></math>"
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      "year": "2022"
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      "value": "<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mrow><mi>SNO</mi><mo>+</mo><mtext>Collaboration</mtext></mrow></math>"
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  "abstracts": [
    {
      "source": "APS", 
      "value": "This paper reports results from a search for single and multinucleon disappearance from the <math><mrow><mmultiscripts><mrow><mi>O</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>16</mn></mrow></mmultiscripts></mrow></math> nucleus in water within the <math><mrow><mi>SNO</mi><mo>+</mo></mrow></math> detector using all of the available data. These so-called \u201cinvisible\u201d decays do not directly deposit energy within the detector but are instead detected through their subsequent nuclear deexcitation and gamma-ray emission. New limits are given for the partial lifetimes: <math><mi>\u03c4</mi><mo>(</mo><mi>n</mi><mo>\u2192</mo><mi>inv</mi><mo>)</mo><mo>&gt;</mo><mspace></mspace><mn>9.0</mn><mo>\u00d7</mo><msup><mn>10</mn><mn>29</mn></msup><mtext> </mtext><mtext> </mtext><mi>years</mi></math>, <math><mi>\u03c4</mi><mo>(</mo><mi>p</mi><mo>\u2192</mo><mi>inv</mi><mo>)</mo><mo>&gt;</mo><mn>9.6</mn><mo>\u00d7</mo><msup><mn>10</mn><mn>29</mn></msup><mtext> </mtext><mtext> </mtext><mi>years</mi></math>, <math><mi>\u03c4</mi><mo>(</mo><mi>n</mi><mi>n</mi><mo>\u2192</mo><mi>inv</mi><mo>)</mo><mo>&gt;</mo><mn>1.5</mn><mo>\u00d7</mo><msup><mn>10</mn><mn>28</mn></msup><mtext> </mtext><mtext> </mtext><mi>years</mi></math>, <math><mi>\u03c4</mi><mo>(</mo><mi>n</mi><mi>p</mi><mo>\u2192</mo><mi>inv</mi><mo>)</mo><mo>&gt;</mo><mspace></mspace><mn>6.0</mn><mo>\u00d7</mo><msup><mn>10</mn><mn>28</mn></msup><mtext> </mtext><mtext> </mtext><mi>years</mi></math>, and <math><mi>\u03c4</mi><mo>(</mo><mi>p</mi><mi>p</mi><mo>\u2192</mo><mi>inv</mi><mo>)</mo><mo>&gt;</mo><mn>1.1</mn><mo>\u00d7</mo><msup><mn>10</mn><mn>29</mn></msup><mtext> </mtext><mtext> </mtext><mi>years</mi></math> at 90% Bayesian credibility level (with a prior uniform in rate). All but the (<math><mi>n</mi><mi>n</mi><mo>\u2192</mo><mi>inv</mi></math>) results improve on existing limits by a factor of about 3."
    }
  ], 
  "imprints": [
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      "date": "2022-06-27", 
      "publisher": "APS"
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}
Published on:
27 June 2022
Publisher:
APS
Published in:
Physical Review D , Volume 105 (2022)
Issue 11
DOI:
https://doi.org/10.1103/PhysRevD.105.112012
arXiv:
2205.06400
Copyrights:
Published by the American Physical Society
Licence:
CC-BY-4.0

Fulltext files: