Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2002 Jul 1;89(1):011302.
doi: 10.1103/PhysRevLett.89.011302. Epub 2002 Jun 13.

Measurement of day and night neutrino energy spectra at SNO and constraints on neutrino mixing parameters

Q R Ahmad  1 , R C Allen, T C Andersen, J D Anglin, J C Barton, E W Beier, M Bercovitch, J Bigu, S D Biller, R A Black, I Blevis, R J Boardman, J Boger, E Bonvin, M G Boulay, M G Bowler, T J Bowles, S J Brice, M C Browne, T V Bullard, G Bühler, J Cameron, Y D Chan, H H Chen, M Chen, X Chen, B T Cleveland, E T H Clifford, J H M Cowan, D F Cowen, G A Cox, X Dai, F Dalnoki-Veress, W F Davidson, P J Doe, G Doucas, M R Dragowsky, C A Duba, F A Duncan, M Dunford, J A Dunmore, E D Earle, S R Elliott, H C Evans, G T Ewan, J Farine, H Fergani, A P Ferraris, R J Ford, J A Formaggio, M M Fowler, K Frame, E D Frank, W Frati, N Gagnon, J V Germani, S Gil, K Graham, D R Grant, R L Hahn, A L Hallin, E D Hallman, A S Hamer, A A Hamian, W B Handler, R U Haq, C K Hargrove, P J Harvey, R Hazama, K M Heeger, W J Heintzelman, J Heise, R L Helmer, J D Hepburn, H Heron, J Hewett, A Hime, M Howe, J G Hykawy, M C P Isaac, P Jagam, N A Jelley, C Jillings, G Jonkmans, K Kazkaz, P T Keener, J R Klein, A B Knox, R J Komar, R Kouzes, T Kutter, C C M Kyba, J Law, I T Lawson, M Lay, H W Lee, K T Lesko, J R Leslie, I Levine, W Locke, S Luoma, J Lyon, S Majerus, H B Mak, J Maneira, J Manor, A D Marino, N McCauley, A B McDonald, D S McDonald, K McFarlane, G McGregor, R Meijer Drees, C Mifflin, G G Miller, G Milton, B A Moffat, M Moorhead, C W Nally, M S Neubauer, F M Newcomer, H S Ng, A J Noble, E B Norman, V M Novikov, M O'Neill, C E Okada, R W Ollerhead, M Omori, J L Orrell, S M Oser, A W P Poon, T J Radcliffe, A Roberge, B C Robertson, R G H Robertson, S S E Rosendahl, J K Rowley, V L Rusu, E Saettler, K K Schaffer, M H Schwendener, A Schülke, H Seifert, M Shatkay, J J Simpson, C J Sims, D Sinclair, P Skensved, A R Smith, M W E Smith, T Spreitzer, N Starinsky, T D Steiger, R G Stokstad, L C Stonehill, R S Storey, B Sur, R Tafirout, N Tagg, N W Tanner, R K Taplin, M Thorman, P M Thornewell, P T Trent, Y I Tserkovnyak, R Van Berg, R G Van de Water, C J Virtue, C E Waltham, J-X Wang, D L Wark, N West, J B Wilhelmy, J F Wilkerson, J R Wilson, P Wittich, J M Wouters, M Yeh; SNO Collaboration. Sudbury Neutrino Observatory
Affiliations

Measurement of day and night neutrino energy spectra at SNO and constraints on neutrino mixing parameters

Q R Ahmad et al. Phys Rev Lett. .

Abstract

The Sudbury Neutrino Observatory (SNO) has measured day and night solar neutrino energy spectra and rates. For charged current events, assuming an undistorted 8B spectrum, 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 nu(e) asymmetry is found to be 7.0%+/-4.9%(+1.3%)(-1.2%). A global solar neutrino analysis in terms of matter-enhanced oscillations of two active flavors strongly favors the large mixing angle solution.

PubMed Disclaimer

LinkOut - more resources