Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - A search for neutrinos from the solar hep reaction and the diffuse supernova neutrino background with the Sudbury Neutrino Observatory
AU - SNO Collaboration
AU - Aharmim, B.
AU - Anthony, A. E.
AU - Beier, E. W.
AU - Bellerive, A.
AU - Bergevin, M.
AU - Biller, S. D.
AU - Boulay, M. G.
AU - Cleveland, B. T.
AU - Currat, C. A.
AU - Dai, X.
AU - Dalnoki-Veress, F.
AU - Detwiler, J.
AU - DiMarco, M.
AU - Doe, P. J.
AU - Doucas, G.
AU - Drouin, P. L.
AU - Duncan, F. A.
AU - Dunford, M.
AU - Dunmore, J. A.
AU - Earle, E. D.
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 - Goon, J. Tm
AU - Graham, K.
AU - Guillian, E.
AU - Hahn, R. L.
AU - Hallin, A. L.
AU - Hallman, E. D.
AU - Harvey, P. J.
AU - Hazama, R.
AU - Heeger, K. M.
AU - Heintzelman, W. J.
AU - Heise, J.
AU - Helmer, R. L.
AU - Hemingway, R. J.
AU - Henning, R.
AU - Hlme, A.
AU - Howard, C.
AU - Jagam, P.
AU - Jelley, N. A.
AU - Klein, J. R.
AU - Kos, M.
AU - Krüger, A.
AU - Kraus, C.
AU - Kormos, Laura
PY - 2006/12/20
Y1 - 2006/12/20
N2 - A search has been made for neutrinos from the hep reaction in the Sun and from the diffuse supernova neutrino background (DSNB) using data collected during the first operational phase of the Sudbury Neutrino Observatory, with an exposure of 0.65 ktons yr. For the hep neutrino search, two events are observed in the effective electron energy range of 14.3 MeV < Teff < 20 MeV, where 3.1 background events are expected. After accounting for neutrino oscillations, an upper limit of 2.3 × 104 cm-2 s-1 at the 90% confidence level is inferred on the integral total flux of hep neutrinos. For DSNB neutrinos, no events are observed in the effective electron energy range of 21 MeV < Teff < 35 MeV, and, consequently, an upper limit on the νe component of the DSNB flux in the neutrino energy range of 22.9 MeV < Eν < 36.9 MeVof 70 cm-2 s-1 is inferred at the 90% confidence level. This is an improvement by a factor of 6.5 on the previous best upper limit on the hep neutrino flux and by 2 orders of magnitude on the previous upper limit on the νe component of the DSNB flux.
AB - A search has been made for neutrinos from the hep reaction in the Sun and from the diffuse supernova neutrino background (DSNB) using data collected during the first operational phase of the Sudbury Neutrino Observatory, with an exposure of 0.65 ktons yr. For the hep neutrino search, two events are observed in the effective electron energy range of 14.3 MeV < Teff < 20 MeV, where 3.1 background events are expected. After accounting for neutrino oscillations, an upper limit of 2.3 × 104 cm-2 s-1 at the 90% confidence level is inferred on the integral total flux of hep neutrinos. For DSNB neutrinos, no events are observed in the effective electron energy range of 21 MeV < Teff < 35 MeV, and, consequently, an upper limit on the νe component of the DSNB flux in the neutrino energy range of 22.9 MeV < Eν < 36.9 MeVof 70 cm-2 s-1 is inferred at the 90% confidence level. This is an improvement by a factor of 6.5 on the previous best upper limit on the hep neutrino flux and by 2 orders of magnitude on the previous upper limit on the νe component of the DSNB flux.
KW - Neutrinos
KW - Sun: general
KW - Supernovae: general
U2 - 10.1086/508768
DO - 10.1086/508768
M3 - Journal article
AN - SCOPUS:33846367315
VL - 653
SP - 1545
EP - 1551
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2 I
ER -