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  • 2205.06400v1

    Submitted manuscript, 439 KB, PDF document

  • 2205.06400

    Accepted author manuscript, 441 KB, PDF document

  • PhysRevD.105.112012

    Final published version, 308 KB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License


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

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Article number112012
<mark>Journal publication date</mark>27/06/2022
<mark>Journal</mark>Physical Review D
Issue number11
Number of pages7
Publication StatusPublished
<mark>Original language</mark>English


This paper reports results from a search for single and multi-nucleon disappearance from the $^{16}$O nucleus in water within the \snoplus{} 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 de-excitation and gamma-ray emission. New limits are given for the partial lifetimes: $\tau(n\rightarrow inv) > 9.0\times10^{29}$ years, $\tau(p\rightarrow inv) > 9.6\times10^{29}$ years, $\tau(nn\rightarrow inv) > 1.5\times10^{28}$ years, $\tau(np\rightarrow inv) > 6.0\times10^{28}$ years, and $\tau(pp\rightarrow inv) > 1.1\times10^{29}$ years at 90\% Bayesian credibility level (with a prior uniform in rate). All but the ($nn\rightarrow inv$) results improve on existing limits by a factor of about 3.