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

doi:10.1103/PhysRevD.102.062006

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

Physics And Astronomy

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Abstract

A search has been performed for neutrinos from two sources, the hep reaction in the solar pp fusion chain and the νe 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 φhep<30×103 cm-2 s-1 [90% credible interval (CI)]. No events are observed in the DSNB search region, and we set an improved upper bound on the νe component of the DSNB flux of φνeDSNB<19 cm-2 s-1 (90% CI) in the energy range 22.9<Eν<36.9 MeV.

Original language	English
Article number	062006
Journal	Physical Review D
Volume	102
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevD.102.062006
State	Published - Sep 2020

Bibliographical note

Funding Information:
This research was supported by: Canada: Natural Sciences and Engineering Research Council, Industry Canada, National Research Council, Northern Ontario Heritage Fund, Atomic Energy of Canada, Ltd., Ontario Power Generation, High Performance Computing Virtual Laboratory, Canada Foundation for Innovation, Canada Research Chairs program, Breakthrough Prize Fund at Queen’s University; U.S.: Department of Energy Office of Nuclear Physics, National Energy Research Scientific Computing Center, Alfred P. Sloan Foundation, National Science Foundation, Department of Energy National Nuclear Security Administration through the Nuclear Science and Security Consortium; U.K.: Science and Technology Facilities Council (formerly Particle Physics and Astronomy Research Council); Portugal: Fundação para a Ciência e a Tecnologia. We thank the SNO technical staff for their strong contributions. We thank INCO (now Vale, Ltd.) for hosting this project in their Creighton mine. We also thank John Beacom for helpful suggestions and discussions regarding atmospheric neutrino backgrounds.

Publisher Copyright:
© 2020 authors. Published by the American Physical Society.

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevD.102.062006

Cite this

@article{39fb3312215c42f6837eb84337acfbfa,

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

abstract = "A search has been performed for neutrinos from two sources, the hep reaction in the solar pp fusion chain and the νe 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 φhep<30×103 cm-2 s-1 [90% credible interval (CI)]. No events are observed in the DSNB search region, and we set an improved upper bound on the νe component of the DSNB flux of φνeDSNB<19 cm-2 s-1 (90% CI) in the energy range 22.9<Eν<36.9 MeV.",

author = "B. Aharmim and Ahmed, {S. N.} and Anthony, {A. E.} and N. Barros and Beier, {E. W.} and A. Bellerive and B. Beltran and M. Bergevin and Biller, {S. D.} and E. Blucher and R. Bonventre and K. Boudjemline and Boulay, {M. G.} and B. Cai and Callaghan, {E. J.} and J. Caravaca and Chan, {Y. D.} and D. Chauhan and M. Chen and Cleveland, {B. T.} and Cox, {G. A.} and X. Dai and H. Deng and Descamps, {F. B.} and Detwiler, {J. A.} and Doe, {P. J.} and G. Doucas and Drouin, {P. L.} and M. Dunford and Elliott, {S. R.} and Evans, {H. C.} and Ewan, {G. T.} and J. Farine and H. Fergani and F. Fleurot and Ford, {R. J.} and Formaggio, {J. A.} and N. Gagnon and K. Gilje and Goon, {J. T.M.} and K. Graham and E. Guillian and S. Habib and Hahn, {R. L.} and Hallin, {A. L.} and Hallman, {E. D.} and Harvey, {P. J.} and R. Hazama and Heintzelman, {W. J.} and R. Maclellan",

note = "Funding Information: This research was supported by: Canada: Natural Sciences and Engineering Research Council, Industry Canada, National Research Council, Northern Ontario Heritage Fund, Atomic Energy of Canada, Ltd., Ontario Power Generation, High Performance Computing Virtual Laboratory, Canada Foundation for Innovation, Canada Research Chairs program, Breakthrough Prize Fund at Queen{\textquoteright}s University; U.S.: Department of Energy Office of Nuclear Physics, National Energy Research Scientific Computing Center, Alfred P. Sloan Foundation, National Science Foundation, Department of Energy National Nuclear Security Administration through the Nuclear Science and Security Consortium; U.K.: Science and Technology Facilities Council (formerly Particle Physics and Astronomy Research Council); Portugal: Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia. We thank the SNO technical staff for their strong contributions. We thank INCO (now Vale, Ltd.) for hosting this project in their Creighton mine. We also thank John Beacom for helpful suggestions and discussions regarding atmospheric neutrino backgrounds. Publisher Copyright: {\textcopyright} 2020 authors. Published by the American Physical Society.",

year = "2020",

month = sep,

doi = "10.1103/PhysRevD.102.062006",

language = "English",

volume = "102",

number = "6",

}

TY - JOUR

T1 - Search for hep solar neutrinos and the diffuse supernova neutrino background using all three phases of the Sudbury Neutrino Observatory

AU - Aharmim, B.

AU - Ahmed, S. N.

AU - Anthony, A. E.

AU - Barros, N.

AU - Beier, E. W.

AU - Bellerive, A.

AU - Beltran, B.

AU - Bergevin, M.

AU - Biller, S. D.

AU - Blucher, E.

AU - Bonventre, R.

AU - Boudjemline, K.

AU - Boulay, M. G.

AU - Cai, B.

AU - Callaghan, E. J.

AU - Caravaca, J.

AU - Chan, Y. D.

AU - Chauhan, D.

AU - Chen, M.

AU - Cleveland, B. T.

AU - Cox, G. A.

AU - Dai, X.

AU - Deng, H.

AU - Descamps, F. B.

AU - Detwiler, J. A.

AU - Doe, P. J.

AU - Doucas, G.

AU - Drouin, P. L.

AU - Dunford, M.

AU - Elliott, S. R.

AU - Evans, H. C.

AU - Ewan, G. T.

AU - Farine, J.

AU - Fergani, H.

AU - Fleurot, F.

AU - Ford, R. J.

AU - Formaggio, J. A.

AU - Gagnon, N.

AU - Gilje, K.

AU - Goon, J. T.M.

AU - Graham, K.

AU - Guillian, E.

AU - Habib, S.

AU - Hahn, R. L.

AU - Hallin, A. L.

AU - Hallman, E. D.

AU - Harvey, P. J.

AU - Hazama, R.

AU - Heintzelman, W. J.

AU - Maclellan, R.

N1 - Funding Information: This research was supported by: Canada: Natural Sciences and Engineering Research Council, Industry Canada, National Research Council, Northern Ontario Heritage Fund, Atomic Energy of Canada, Ltd., Ontario Power Generation, High Performance Computing Virtual Laboratory, Canada Foundation for Innovation, Canada Research Chairs program, Breakthrough Prize Fund at Queen’s University; U.S.: Department of Energy Office of Nuclear Physics, National Energy Research Scientific Computing Center, Alfred P. Sloan Foundation, National Science Foundation, Department of Energy National Nuclear Security Administration through the Nuclear Science and Security Consortium; U.K.: Science and Technology Facilities Council (formerly Particle Physics and Astronomy Research Council); Portugal: Fundação para a Ciência e a Tecnologia. We thank the SNO technical staff for their strong contributions. We thank INCO (now Vale, Ltd.) for hosting this project in their Creighton mine. We also thank John Beacom for helpful suggestions and discussions regarding atmospheric neutrino backgrounds. Publisher Copyright: © 2020 authors. Published by the American Physical Society.

PY - 2020/9

Y1 - 2020/9

N2 - A search has been performed for neutrinos from two sources, the hep reaction in the solar pp fusion chain and the νe 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 φhep<30×103 cm-2 s-1 [90% credible interval (CI)]. No events are observed in the DSNB search region, and we set an improved upper bound on the νe component of the DSNB flux of φνeDSNB<19 cm-2 s-1 (90% CI) in the energy range 22.9<Eν<36.9 MeV.

AB - A search has been performed for neutrinos from two sources, the hep reaction in the solar pp fusion chain and the νe 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 φhep<30×103 cm-2 s-1 [90% credible interval (CI)]. No events are observed in the DSNB search region, and we set an improved upper bound on the νe component of the DSNB flux of φνeDSNB<19 cm-2 s-1 (90% CI) in the energy range 22.9<Eν<36.9 MeV.

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UR - http://www.scopus.com/inward/citedby.url?scp=85092720258&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.102.062006

DO - 10.1103/PhysRevD.102.062006

M3 - Article

AN - SCOPUS:85092720258

VL - 102

IS - 6

M1 - 062006

ER -

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

Abstract

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ASJC Scopus subject areas

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