Measurement of Day and Night Neutrino Energy Spectra at SNO and Constraints on Neutrino Mixing Parameters

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

doi:10.1103/physrevlett.89.011302

Cited by 1,147 publications

(945 citation statements)

References 19 publications

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“…The rates from these different processes are correlated because they are, with the present data, observed most accurately in a mode in which all of the events are considered together and a simultaneous solution is made for each of the separate processes using their known angular dependences (with respect to the solar direction) and their radial dependences in the detector, as well as information from direct measurements of the background [1,2,3]. Details of how this analysis is done are given in refs.…”

Section: Global Oscillation Solutionsmentioning

confidence: 99%

“…In order to avoid this cycle, the SNO collaboration presented [2] results for the CC, NC, and ES fluxes that were determined by assuming that the CC and ES recoil energy spectra are undistorted by neutrino oscillations or any other new physics.…”

Section: Global Oscillation Solutionsmentioning

confidence: 99%

“…The strategies corresponding to panels (b) and (c) include the theoretical uncertainty in the 8 B neutrino flux, but differ in how they treat the total rate measured in the Super-Kamiokande experiment. The input data used in constructing figure 1 include the neutrino fluxes and uncertainties predicted by the BP00 solar model [8] and the total measured CC and NC event rates from the SNO experiment [1], the SNO day-night asymmetry [2], the Chlorine [10] and Gallium (averaged) [6,11,12,13] event rates, as well as the zenith angle-recoil energy spectrum data presented by Super-Kamiokande [14]. The rates from the GALLEX/GNO and SAGE experiments have been averaged to provide a unique data point (72.4 ± 4.7 SNU).…”

Section: Global Oscillation Solutionsmentioning

confidence: 99%

“…[9,10,11,12,13,14,15]) that were published or had appeared publicly before April 20, 2002, the date that the SNO NC and day-night asymmetry were first published. In the "After" case, we include in addition measurements reported in the two recent papers [1,2] by the Sudbury Neutrino Observatory (SNO) collaboration.…”

Section: Introductionmentioning

confidence: 99%

“…The goal of this paper is to assess the impact of recent SNO measurements [1,2,3] on the allowed regions of neutrino oscillation parameters and on the predicted values of the most important future solar neutrino observables. The SNO collaboration has reported a neutral current (NC) measurement of the active 8 B solar neutrino flux and related measurements of the day-night asymmetry, as well as improved determinations of the charged current (CC) and neutrino-electron scattering rate.…”

Section: Introductionmentioning

confidence: 99%

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Before and After: How has the SNO NC measurement changed things?

Bahcall¹,

González-García²,

Peña-Garay³

2002

J. High Energy Phys.

126

121

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We present "Before and After" global oscillation solutions, as well as predicted "Before and After" values and ranges for ten future solar neutrino observables (for BOREXINO, KamLAND, SNO, and a generic p − p neutrino detector). The "Before" case includes all solar neutrino data (and some theoretical improvements) available prior to April 20, 2002 and the "After" case includes, in addition, the new SNO data on the CC, NC, and day-night asymmetry. We have performed global analyses using the full SNO day-night energy spectrum and, alternatively, using just the SNO NC and CC rates and the day-night asymmetry. The LMA solution is the only currently allowed MSW oscillation solution at ∼ 99% CL. The LOW solution is allowed only at more than 2.5σ, SMA is now excluded at 3.7σ or 4.7σ depending upon analysis strategy, and pure sterile oscillations are excluded at more than 4.7σ. Small mixing angles are "out" (pure sterile is "way out"); MSW with large mixing angles is definitely "in." Vacuum oscillations are allowed at 3σ, but not at 2σ. Precise maximal mixing is excluded at 3.2σ for MSW solutions and at more than 2.8σ for vacuum solutions. Most of the predicted values for future observables for the BOREXINO, KamLAND, and future SNO measurements are changed only by minor amounts by the inclusion of the recent SNO data. In order to test the robustness of the allowed neutrino oscillation regions that are inferred from the measurements and the predicted values for future solar neutrino observables, we have carried out calculations using a variety of strategies for analyzing the SNO and other experimental data.

show abstract

Section: Global Oscillation Solutionsmentioning

confidence: 99%

Section: Global Oscillation Solutionsmentioning

confidence: 99%

Section: Global Oscillation Solutionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Before and After: How has the SNO NC measurement changed things?

Bahcall¹,

González-García²,

Peña-Garay³

2002

J. High Energy Phys.

126

121

View full text Add to dashboard Cite

show abstract

Neutrino masses and particle physics beyond the standard model

Päs¹

2002

Ann. Phys.

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The evidence for non-vanishing neutrino masses from solar and atmospheric neutrinos provides the first solid hint towards physics beyond the standard model. A full reconstruction of the neutrino spectrum may well provide a key to the theoretical structures underlying the standard model such as supersymmetry, grand unification or extra space dimensions. In this article we discuss the impact of absolute neutrinos masses on physics beyond the standard model. We review the information obtained from neutrino oscillation data and discuss the prospects of the crucial determination of the absolute neutrino mass scale, as well as the intriguing connection with the Z-burst model for extreme-energy cosmic rays.

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Radion-induced gravitational wave oscillations and their phenomenology

et al. 2003

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We discuss the theory and phenomenology of the interplay between the massless graviton and its massive Kaluza-Klein modes in the Randall-Sundrum two-brane model. The equations of motion of the transverse traceless degrees of freedom are derived by means of a Green function approach as well as from an effective nonlocal action. The second procedure clarifies the extraction of the particle content from the nonlocal action and the issue of its diagonalization. The situation discussed is generic for the treatment of two-brane models if the on-brane fields are used as the dynamical degrees of freedom. The mixing of the effective graviton modes of the localized action can be interpreted as radion-induced gravitational-wave oscillations, a classical analogy to meson and neutrino oscillations. We show that these oscillations arising in M-theorymotivated braneworld setups could lead to effects detectable by gravitational-wave interferometers. The implications of this effect for models with ultra-light gravitons are discussed.

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Measurement of Day and Night Neutrino Energy Spectra at SNO and Constraints on Neutrino Mixing Parameters

Cited by 1,147 publications

References 19 publications

Before and After: How has the SNO NC measurement changed things?

Before and After: How has the SNO NC measurement changed things?

Neutrino masses and particle physics beyond the standard model

Radion-induced gravitational wave oscillations and their phenomenology

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