Search for hep solar neutrinos and the diffuse supernova neutrino background using all three phases of the Sudbury Neutrino Observatory

Aharmim, B.; Ahmed, S. N.; Anthony, A. E.; Barros, N.; Beier, E. W.; Bellerive, A.; Beltran, B.; Bergevin, M.; Biller, S. D.; Blucher, E.; Bonventre, R.; Boudjemline, K.; Boulay, M. G.; Cai, B.; Callaghan, E. J.; Caravaca, J.; Chan, Y. D.; Chauhan, D.; Chen, M.; Cleveland, B. T.; Cox, G. A.; Dai, X.; Deng, H.; Descamps, F. B.; Detwiler, J. A.; Doe, P. J.; Doucas, G.; Drouin, P. -L.; Dunford, M.; Elliott, S. R.; Evans, H. C.; Ewan, G. T.; Farine, J.; Fergani, H.; Fleurot, F.; Ford, R. J.; Formaggio, J. A.; Gagnon, N.; Gilje, K.; Goon, J. TM.; Graham, K.; Guillian, E.; Habib, S.; Hahn, R. L.; Hallin, A. L.; Hallman, E. D.; Harvey, P. J.; Hazama, R.; Heintzelman, W. J.; Heise, J.; Helmer, R. L.; Hime, A.; Howard, C.; Huang, M.; Jagam, P.; Jamieson, B.; Jelley, N. A.; Jerkins, M.; Keeter, K. J.; Klein, J. R.; Kormos, L. L.; Kos, M.; Kraus, C.; Krauss, C. B.; Krüger, A.; Kutter, T.; Kyba, C. C. M.; Labe, K.; Land, B. J.; Lange, R.; LaTorre, A.; Law, J.; Lawson, I. T.; Lesko, K. T.; Leslie, J. R.; Levine, I.; Loach, J. C.; MacLellan, R.; Majerus, S.; Mak, H. B.; Maneira, J.; Martin, R. D.; Mastbaum, A.; McCauley, N.; McDonald, A. B.; McGee, S. R.; Miller, M. L.; Monreal, B.; Monroe, J.; Nickel, B. G.; Noble, A. J.; O’Keeffe, H. M.; Oblath, N. S.; Okada, C. E.; Ollerhead, R. W.; Orebi Gann, G. D.; Oser, S. M.; Ott, R. A.; Peeters, S. J. M.; Poon, A. W. P.; Prior, G.; Reitzner, S. D.; Rielage, K.; Robertson, B. C.; Robertson, R. G. H.; Schwendener, M. H.; Secrest, J. A.; Seibert, S. R.; Simard, O.; Sinclair, D.; Skensved, P.; Sonley, T. J.; Stonehill, L. C.; Tešić, G.; Tolich, N.; Tsui, T.; Van Berg, R.; VanDevender, B. A.; Virtue, C. J.; Wall, B. L.; Waller, D.; Wan Chan Tseung, H.; Wark, D. L.; Wendland, J.; West, N.; Wilkerson, J. F.; Wilson, J. R.; Winchester, T.; Wright, A.; Yeh, M.; Zhang, F.; Zuber, K.

doi:10.1103/PhysRevD.102.062006

Title: Search for hep solar neutrinos and the diffuse supernova neutrino background using all three phases of the Sudbury Neutrino Observatory

Journal Article · Tue Sep 29 00:00:00 EDT 2020 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.102.062006· OSTI ID:1668449

Aharmim, B.; Ahmed, S. N.; Anthony, A. E.; Barros, N.; Beier, E. W.; Bellerive, A.; Beltran, B.; Bergevin, M.; Biller, S. D.; Blucher, E.; Bonventre, R.; Boudjemline, K.; Boulay, M. G.; Cai, B.; Callaghan, E. J.; Caravaca, J.; Chan, Y. D.; Chauhan, D.; Chen, M.; Cleveland, B. T. more »

A search has been performed for neutrinos from two sources, the hep reaction in the solar p p fusion chain and the $$\nu_e$$ component of the diffuse supernova neutrino background (DSNB), using the full dataset of the Sudbury Neutrino Observatory with a total exposure of 2.47 kton – years after fiducialization. The hep search is performed using both a single-bin counting analysis and a likelihood fit. We find a best-fit flux that is compatible with solar model predictions while remaining consistent with zero flux, and set a one-sided upper limit of Φ_hep < 30 × 10³ cm^–2s^–1 [90% credible interval (CI)]. No events are observed in the DSNB search region, and we set an improved upper bound on the ν e component of the DSNB flux of $$Φ^{DSNB}_{νe}$$ < 19 cm^–2s^–1 (90% CI) in the energy range 22.9 < $$E_ν$$ < 36.9 MeV.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); University of North Carolina, Chapel Hill, NC (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)

Contributing Organization:: SNO Collaboration

Grant/Contract Number:: SC0012704; 89233218CNA000001; AC02-05CH11231; AC02-07CH11359; FG02-97ER41041; FG02-97ER41033

OSTI ID:: 1668449

Alternate ID(s):: OSTI ID: 1677675; OSTI ID: 1711411; OSTI ID: 1713257; OSTI ID: 1764833; OSTI ID: 1834155

Report Number(s):: BNL-219975-2020-JAAM; LA-UR-20-25778; FERMILAB-PUB-20-682-ESH; LLNL-JRNL-807672; PRVDAQ; 062006

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Vol. 102 Journal Issue: 6; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Title: Search for hep solar neutrinos and the diffuse supernova neutrino background using all three phases of the Sudbury Neutrino Observatory

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