Neutral current and day night measurements from the pure D2O phase of SNO
Creators
- Hallin, A.L.
- Beier, E.W.
- Biller, S.D.
- Boulay, M.G.
- Bowler, M.G.
- Bowles, T.J.
- Brice, S.J.
- Bullard, T.V.
- Cameron, J.
- Chan, Y.D.
- Chen, X.
- Chen, M.
- Cleveland, B.T.
- Cox, G.A.
- Dai, X.
- Dalnoki-Veress, F.
- Doe, P.J.
- Doucas, G.
- Dragowsky, M.R.
- Duba, C.A.
- Duncan, F.A.
- Dunford, M.
- Dunmore, J.A.
- Earle, E.D.
- Elliott, S.R.
- Evans, H.C.
- Ewan, G.T.
- Farine, J.
- Fergani, H.
- Formaggio, J.A.
- Fowler, M.M.
- Frame, K.
- Frati, W.
- Gagnon, N.
- Graham, K.
- Grant, D.R.
- Hahn, R.L.
- Hallman, E.D.
- Hamer, A.S.
- Handler, W.B.
- Hargrove, C.K.
- Harvey, P.J.
- Hazama, R.
- Heeger, K.M.
- Heintzelman, W.J.
- Heise, J.
- Helmer, R.L.
- Hime, A.
- Howe, M.
- Jagam, P.
- Jelley, N.A.
- Kazkaz, K.
- Keener, P.T.
- Klein, J.R.
- Kutter, T.
- Kyba, C.C.M.
- Law, J.
- Lawson, I.T.
- Lesko, K.T.
- Leslie, J.R.
- Levine, I.
- Luoma, S.
- Majerus, S.
- Mak, H.B.
- Maneira, J.
- Manor, J.
- Marino, A.D.
- McCauley, N.
- McDonald, A.B.
- McGregor, G.
- Miller, G.G.
- Nally, C.W.
- Noble, A.J.
- Norman, E.B.
- Okada, C.E.
- Orrell, J.L.
- Oser, S.M.
- Poon, A.W.P.
- Robertson, B.C.
- Robertson, R.G.H.
- Rosendahl, S.S.E.
- Rusu, V.L.
- Schaffer, K.K.
- Schwendener, M.H.
- Simpson, J.J.
- Sims, C.J.
- Sinclair, D.
- Skensved, P.
- Smith, M.W.E.
- Spreitzer, T.
- Starinsky, N.
- Stokstad, R.G.
- Stonehill, L.C.
- Tafirout, R.
- Tagg, N.
- Van Berg, R.
- Van de Water, R.G.
- Virtue, C.J.
- Waltham, C.E.
- Wark, D.L.
- West, N.
- Wilhelmy, J.B.
- Wilkerson, J.F.
- Wilson, J.R.
- Wittich, P.
- Wouters, J.M.
- Yeh, M.
Description
The Sudbury Neutrino Observatory is a 1000 T D2O Cerenkov detector that is sensitive to 8B solar neutrinos. The energy, radius, and direction with respect to the sun is measured for each neutrino event; these distributions are used to separately determine the rates of the charged current, neutral current and electron scattering reactions of neutrinos on deuterium. Assuming an undistorted 8B spectrum, the νe component of the 8B solar flux is phie = 1.76+0.05-0.05(stat.)+0.09-0.09 (syst.) x 106 cm-2s-1 based on events with a measured kinetic energy above 5 MeV. The non-νe component is phiμτ 3.41+0.45-0.45(stat.)+0.48-0.45 (syst.) x 106 cm-2s-1, 5.3σ greater than zero, providing strong evidence for solar νe flavor transformation. The total flux measured with the NC reaction is phiNC = 5.09+0.044-0.43(stat.)+0.46-0.43 (sy st.) x 106 cm-2s-1, consistent with solar models. The night minus day rate is 14.0% ± 6.3%+1.5-1.4% of the average rate. If the total flux of active neutrinos is additionally constrained to have no asymmetry, the νe asymmetry is found to be 7.0% ± 4.9%+1.3-1.2%. A global solar neutrino analysis is terms of matter-enhanced oscillations of two active flavors strongly favors the Large Mixing Angle (LMA) solution
Additional details
Identifiers
- PII
- S0920563203012982;
Publishing Information
- Journal Title
- Nuclear Physics. B, Proceedings Supplements
- Journal Volume
- 118
- Journal Issue
- 3
- Journal Page Range
- p. 3-14
- ISSN
- 0920-5632
- CODEN
- NPBSE7
Conference
- Title
- 20. international conference on neutrino physics and astrophysics
- Dates
- 25-30 May 2002
- Place
- Munich (Germany)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Philippines
- INIS RN
- 35045931
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CHERENKOV COUNTERS; DEUTERIUM; ELASTIC SCATTERING; NEUTRAL CURRENTS; NEUTRINO DETECTION; NEUTRINO-ELECTRON INTERACTIONS; OSCILLATIONS; SOLAR NEUTRINOS; SUDBURY NEUTRINO OBSERVATORY
- Descriptors DEC
- ALGEBRAIC CURRENTS; CURRENTS; DETECTION; ELEMENTARY PARTICLES; FERMIONS; HYDROGEN ISOTOPES; INTERACTIONS; ISOTOPES; LEPTON-LEPTON INTERACTIONS; LEPTONS; LIGHT NUCLEI; MASSLESS PARTICLES; MEASURING INSTRUMENTS; NEUTRINOS; NUCLEI; ODD-ODD NUCLEI; PARTICLE INTERACTIONS; RADIATION DETECTION; RADIATION DETECTORS; RADIATIONS; SCATTERING; SOLAR PARTICLES; SOLAR RADIATION; STABLE ISOTOPES; STELLAR RADIATION
Optional Information
- Copyright
- Copyright (c) 2003 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.