PhysRevD.99.032008.pdf (540.14 kB)
Search for invisible modes of nucleon decay in water with the SNO+ detector
Version 2 2023-06-12, 08:58
Version 1 2023-06-09, 16:37
journal contribution
posted on 2023-06-12, 08:58 authored by A R Back, K J Clark, Elisabeth FalkElisabeth Falk, Jeff HartnellJeff Hartnell, G M Lefeuvre, E J Leming, M Mlejnek, M J Mottram, Martti Nirkko, Simon PeetersSimon Peeters, Michal RiganMichal Rigan, J R Sinclair, M I Stringer, J Waterfield, R F White, The SNO+ Collaboration, othersThis paper reports results from a search for nucleon decay through invisible modes, where no visible energy is directly deposited during the decay itself, during the initial water phase of SNO+. However, such decays within the oxygen nucleus would produce an excited daughter that would subsequently deexcite, often emitting detectable gamma rays. A search for such gamma rays yields limits of 2.5×1029??y at 90% Bayesian credibility level (with a prior uniform in rate) for the partial lifetime of the neutron, and 3.6×1029??y for the partial lifetime of the proton, the latter a 70% improvement on the previous limit from SNO. We also present partial lifetime limits for invisible dinucleon modes of 1.3×1028??y for nn, 2.6×1028??y for pn and 4.7×1028??y for pp, an improvement over existing limits by close to 3 orders of magnitude for the latter two.
Funding
Optical Calibration Development for SNO+; G0753; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/J001007/1
Sussex EPP Rolling Grant 2009; G0332; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/H000887/2
Sussex Experimental Particle Physics 2015 Consolidated Grant; G1763; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/N000307/1
Consolidated Grant; G0927; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/K001329/1
Marie Curie Actions Intra-European Fellowship (IEF); FP7-PEOPLE-2009-IEF
History
Publication status
- Published
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- Published version
Journal
Physical Review DISSN
2470-0010Publisher
American Physical SocietyExternal DOI
Issue
3Volume
99Page range
032008 1-13Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Experimental Particle Physics Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2019-01-28First Open Access (FOA) Date
2019-01-28First Compliant Deposit (FCD) Date
2019-01-25Usage metrics
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