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1. Confocal Microscopy of Unfixed Breast Needle Core Biopsies: A Comparison to Fixed and Stained Sections

Author

Zavislan James M, Bonfiglio Thomas A, Boger J Neil, Schiffhauer Linda M, Zuley Margarita, and Fox Christi

Subjects
Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Abstract Background Needle core biopsy, often in conjunction with ultrasonic or stereotactic guided techniques, is frequently used to diagnose breast carcinoma in women. Confocal scanning laser microscopy (CSLM) is a technology that provides real-time digital images of tissues with cellular resolution. This paper reports the progress in developing techniques to rapidly screen needle core breast biopsy and surgical specimens at the point of care. CSLM requires minimal tissue processing and has the potential to reduce the time from excision to diagnosis. Following imaging, specimens can still be submitted for standard histopathological preparation. Methods Needle core breast specimens from 49 patients were imaged at the time of biopsy. These lesions had been characterized under the Breast Imaging Reporting And Data System (BI-RADS) as category 3, 4 or 5. The core biopsies were imaged with the CSLM before fixation. Samples were treated with 5% citric acid and glycerin USP to enhance nuclear visibility in the reflectance confocal images. Immediately following imaging, the specimens were fixed in buffered formalin and submitted for histological processing and pathological diagnosis. CSLM images were then compared to the standard histology. Results The pathologic diagnoses by standard histology were 7 invasive ductal carcinomas, 2 invasive lobular carcinomas, 3 ductal carcinomas in-situ (CIS), 21 fibrocystic changes/proliferative conditions, 9 fibroadenomas, and 5 other/benign; two were excluded due to imaging difficulties. Morphologic and cellular features of benign and cancerous lesions were identified in the confocal images and were comparable to standard histologic sections of the same tissue. Conclusion CSLM is a technique with the potential to screen needle core biopsy specimens in real-time. The confocal images contained sufficient information to identify stromal reactions such as fibrosis and cellular proliferations such as intra-ductal and infiltrating carcinoma, and were comparable to standard histologic sections of the same tissue. Morphologic and cellular features of benign and cancerous lesions were identified in the confocal images. Additional studies are needed to 1.) establish correlation of the confocal and traditional histologic images for the various diseases of the breast; 2.) validate diagnostic use of CSLM and; 3.) further define features of borderline lesions such as well-differentiated ductal CIS vs. atypical hyperplasia.

Published
2009
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3. Do statistically significant correlations exist between the Homestake solar neutrino data and sunspots?

Author

Boger, J., Hahn, R. L., and Cumming, J. B.

Subjects
Astrophysics
Abstract

It has been suggested by various authors that a significant anticorrelation exists between the Homestake solar neutrino data and the sunspot cycle. Some of these claims rest on smoothing the data by taking running averages, a method that has recently undergone criticism. We demonstrate that no significant anticorrelation can be found in the Homestake, data, or in standard 2- and 4-point averages of that data. However, when 3-, 5-, and 7-point running averages are taken, an anticorrelation seems to emerge whose significance grows as the number of points in the average increases. Our analysis indicates that the apparently high significance of these anticorrelations is an artifact of the failure to consider the loss of independence introduced in the running average process. When this is considered, the significance is reduced to that of the unaveraged data. Furthermore, when evaluated via parametric subsampling, no statistically significant anticorrelation is found. We conclude that the Homestake data can not be used to substantiate any claim of an anticorrelation with the sunspot cycle., Comment: 17 pages, 5 figures, AasTeX

Published
2000
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4. Measurement of the nue and Total 8B Solar Neutrino Fluxes with the Sudbury Neutrino Observatory Phase I Data Set

Author

Aharmim, B., Ahmad, Q.R., Ahmed, S.N., Allen, R.C., Andersen, T.C., Anglin, J.D., Buehler, G., Barton, J.C., Beier, E.W., Bercovitch, M., Bergevin, 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., Burritt, T.H., Cameron, J., Chan, Y.D., Chen, H.H., Chen, M., Chen, X., Cleveland, B.T., Cowan, J.H.M., Cowen, D.F., Cox, G.A., Currat, C.A., Dai, X., Dalnoki-Veress, F., Davidson, W.F., Deng, H., DiMarco, M., 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., Ferraris, A.P., Fleurot, F., Ford, R.J., Formaggio, J.A., Fowler, M.M., Frame, K., Frank, E.D., Frati, W., Gagnon, N., Germani, J.V., Gil, S., Goldschmidt, A., Goon, J.T.M., Graham, K., Grant, D.R., Guillian, E., Hahn, R.L., Hallin, A.L., Hallman, E.D., Hamer, A.S., Hamian, A.A., Handler, W.B., Haq, R.U., Hargrove, C.K., Harvey, P.J., Hazama, R., Heeger, K.M., Heintzelman, W.J., Heise, J., Helmer, R.L., Henning, R., Hepburn, J.D., Heron, H., Hewett, J., Hime, A., Howard, C., Howe, M.A., Huang, M., Hykawy, J.G., Isaac, M.C.P., Jagam, P., Jamieson, B., Jelley, N.A., Jillings, C., Jonkmans, G., Kazkaz, K., and Keener, P.T.

Abstract

This article provides the complete description of results from the Phase I data set of the Sudbury Neutrino Observatory (SNO). The Phase I data set is based on a 0.65 kt-year exposure of heavy water to the solar 8B neutrino flux. Included here are details of the SNO physics and detector model, evaluations of systematic uncertainties, and estimates of backgrounds. Also discussed are SNO's approach to statistical extraction of the signals from the three neutrino reactions (charged current, neutral current, and elastic scattering) and the results of a search for a day-night asymmetry in the ?e flux. Under the assumption that the 8B spectrum is undistorted, the measurements from this phase yield a solar ?e flux of ?(?e) = 1.76+0.05?0.05(stat.)+0.09?0.09 (syst.) x 106 cm?2 s?1, and a non-?e component ?(? mu) = 3.41+0.45?0.45(stat.)+0.48?0.45 (syst.) x 106 cm?2 s?1. The sum of these components provides a total flux in excellent agreement with the predictions of Standard Solar Models. The day-night asymmetry in the ?e flux is found to be Ae = 7.0 +- 4.9 (stat.)+1.3?1.2 percent (sys.), when the asymmetry in the total flux is constrained to be zero.

Published
2007

5. Electron energy spectra, fluxes, and day-night asymmetries of boron-8 solar neutrinos from the 391-day salt phase sno data set

Author

Aharmim, B., Ahmed, S.N., Anthony, A.E., Beier, E.W., Bellerive, A., Bergevin, M., Biller, S.D., Boger, J., Boulay, M.G., Bowler, M.G., Bullard, T.V., Chan, Y.D., Chen, M., Chen, X., Cleveland, B.T., Cox, G.A., Currat, C.A., Dai, X., Dalnoki-Veress, F., Deng, H., Doe, P.J., Dosanjh, R.S., Doucas, G., 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., Fleurot, F., Formaggio, J.A., Frame, K., Frati, W., Fulsom, B.G., Gagnon, N., Graham, K., Grant, D.R., Hahn, R.L., Hall, J.C., Hallin, A.L., Hallman, E.D., Handler, W.B., Hargrove, C.K., Harvey, P.J., Hazama, R., Heeger, K.M., Heelan, L., Heintzelman, W.J., Heise, J., Helmer, R.L., Hemingway, R.J., Hime, A., Howard, C., Howe, M.A., Huang, M., Jagam, P., Jelley, N.A., Klein, J.R., Kormos, L.L., Kos, M.S., Kruger, A., Kraus, C., Krauss, C.B., Krumins, A.V., Kutter, T., Kyba, C.C.M., Labranche, H., Lange, R., Law, J., Lawson, I.T., Lesko, K.T., Leslie, J.R., Levine, I., Loach, J.C., Luoma, S., MacLellan, R., Majerus, S., Mak, H.B., Maneira, J., Marino, A.D., McCauley, N., McDonald, A.B., McGee, S., McGregor, G., Mifflin, C., Miknaitis, K.K.S., Moffat, B.A., Nally, C.W., Neubauer, M.S., Nickel, B.G., Noble, A.J., Norman, E.B., Oblath, N.S., Okada, C.E., Ollerhead, R.W., and Orrell, J.L.

Subjects
neutrinos, solar neutrinos
Abstract

Results are reported from the complete salt phase of the Sudbury Neutrino Observatory experiment in which NaCl was dissolved in the D_2O target. The addition of salt enhanced the signal from neutron capture, as compared to the pure D_2O detector. By making a statistical separation of charged-current events from other types based on event-isotropy criteria, the effective electron recoil energy spectrum has been extracted. In units of 106 cm-2 s-1, the total flux of active-flavor neutrinos from 8B decay in the Sun is found to be 4.94+0.21_-0.21(stat)+0.38_-0.34(syst) and the integral flux of electron neutrinos for an undistorted 8B spectrum is 1.68+0.06_-0.06(stat)+0.08_-0.09(syst); the signal from (nu_x,e) elastic scattering is equivalent to an electron-neutrino flux of 2.35+0.22-0.22(stat)+0.15_-0.15(syst). These results are consistent with those expected for neutrino oscillations with the so-called Large Mixing Angle parameters, and also with an undistorted spectrum. A search for matter-enhancement effects in the Earth through a possible day-night asymmetry in the charged-current integral rate is consistent with no asymmetry. Including results from other experiments, the best-fit values for two-neutrino mixing parameters are Delta m2 = (8.0+0.6_-0.4) x 10-5 eV2 and theta = 33.9 +2.4_-2.2 degrees.

Published
2005

6. Neutrino observations from the Sudbury Neutrino Observatory

Author

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., Buhler, 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, X., Dalnoki-Veress, F., Davidson, W.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., Ferraris, A.P., Ford, R.J., Formaggio, J.A., Fowler, M.M., Frame, K., Frank, E.D., Frati, W., Gagnon, N., Germani, J.V., Gil, S., Graham, K., Grant, D.R., Hahn, R.L., Hallin, A.L., Hallman, E.D., Hamer, A.S., Hamian, A.A., Handler, W.B., Haq, R.U., 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, J., Hime, A., Hykawy, J.G., Isaac, M.C.P., Jagam, P., Jelley, N.A., Jillings, C., Jonkmans, G., Kazkaz, K., Keener, P.T., Klein, J.R., Knox, A.B., Komar, R.J., Kouzes, R., Kutter, T., Kyba, C.C.M., Law, J., Lawson, I.T., Lay, M., Lee, H.W., Lesko, K.T., Leslie, J.R., Levine, I., Locke, W., and Luoma, S.

Subjects
Physics of elementary particles and fields, solar neutrinos Sudbury Neutrino Observatory
Published
2001

12. Proteinase K grown inside HARE serial crystallography chip

Author

Norton-Baker, B., primary, Mehrabi, P., additional, Boger, J., additional, Schonherr, R., additional, von Stetten, D., additional, Schikora, H., additional, Martin, R.W., additional, Miller, R.J.D., additional, Redecke, L., additional, and Schulz, E.C., additional

Published
2021
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14. Relational, Flexible, Everyday: Learning from Ethics in Dementia Research.

Author

Hodge, J, Foley, S, Brankaert, R, Kenning, G, Lazar, A, Boger, J, Morrissey, K, Hodge, J, Foley, S, Brankaert, R, Kenning, G, Lazar, A, Boger, J, and Morrissey, K

Abstract

Engaging in participatory research in HCI raises numerous ethical complexities such as consent, researcher relationships, and participant compensation. Doing HCI work in the area of dementia amplifies these issues, and researchers in this area are modelling ethical stances to ensure researcher-participant relationships focus on meaningful engagement and care. This paper presents an insight into the kinds of ethical foci required when doing design research with people living with dementia and their carers. We interviewed 22 HCI researchers with experience working in dementia care contexts. Our qualitative analysis outlines subsequent lessons-learned, such as recognition of the participants, self-care, research impact, and subjectivity in ethical review boards. Furthermore, we found the complexity of navigating both "everyday" and more formal, institutional ethics in dementia research has implications beyond the context of working with people with dementia and outline key considerations for ethical practices in socially orientated HCI research.

Published
2020

15. Structure of SARS-CoV-2 Main Protease bound to Maleate.

Author

Guenther, S., primary, Reinke, P., additional, Oberthuer, D., additional, Yefanov, O., additional, Gelisio, L., additional, Ginn, H., additional, Lieske, J., additional, Domaracky, M., additional, Brehm, W., additional, Rahmani Mashour, A., additional, White, T.A., additional, Knoska, J., additional, Pena Esperanza, G., additional, Koua, F., additional, Tolstikova, A., additional, Groessler, M., additional, Fischer, P., additional, Hennicke, V., additional, Fleckenstein, H., additional, Trost, F., additional, Galchenkova, M., additional, Gevorkov, Y., additional, Li, C., additional, Awel, S., additional, Paulraj, L.X., additional, Ullah, N., additional, Andaleeb, H., additional, Werner, N., additional, Falke, S., additional, Hinrichs, W., additional, Alves Franca, B., additional, Schwinzer, M., additional, Brognaro, H., additional, Perbandt, M., additional, Tidow, H., additional, Seychell, B., additional, Beck, T., additional, Meier, S., additional, Doyle, J.J., additional, Giseler, H., additional, Melo, D., additional, Dunkel, I., additional, Lane, T.J., additional, Peck, A., additional, Saouane, S., additional, Hakanpaeae, J., additional, Meyer, J., additional, Noei, H., additional, Boger, J., additional, Gribbon, P., additional, Ellinger, B., additional, Kuzikov, M., additional, Wolf, M., additional, Zhang, L., additional, Ehrt, C., additional, Pletzer-Zelgert, J., additional, Wollenhaupt, J., additional, Feiler, C., additional, Weiss, M., additional, Schulz, E.C., additional, Mehrabi, P., additional, Norton-Baker, B., additional, Schmidt, C., additional, Lorenzen, K., additional, Schubert, R., additional, Han, H., additional, Chari, A., additional, Fernandez Garcia, Y., additional, Turk, D., additional, Hilgenfeld, R., additional, Rarey, M., additional, Zaliani, A., additional, Chapman, H.N., additional, Pearson, A., additional, Betzel, C., additional, and Meents, A., additional

Published
2020
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16. Structure of SARS-CoV-2 Main Protease bound to PD 168568.

Author

Guenther, S., primary, Reinke, P., additional, Oberthuer, D., additional, Yefanov, O., additional, Gelisio, L., additional, Ginn, H., additional, Lieske, J., additional, Domaracky, M., additional, Brehm, W., additional, Rahmani Mashour, A., additional, White, T.A., additional, Knoska, J., additional, Pena Esperanza, G., additional, Koua, F., additional, Tolstikova, A., additional, Groessler, M., additional, Fischer, P., additional, Hennicke, V., additional, Fleckenstein, H., additional, Trost, F., additional, Galchenkova, M., additional, Gevorkov, Y., additional, Li, C., additional, Awel, S., additional, Paulraj, L.X., additional, Ullah, N., additional, Andaleeb, H., additional, Werner, N., additional, Falke, S., additional, Hinrichs, W., additional, Alves Franca, B., additional, Schwinzer, M., additional, Brognaro, H., additional, Perbandt, M., additional, Tidow, H., additional, Seychell, B., additional, Beck, T., additional, Meier, S., additional, Doyle, J.J., additional, Giseler, H., additional, Melo, D., additional, Dunkel, I., additional, Lane, T.J., additional, Peck, A., additional, Saouane, S., additional, Hakanpaeae, J., additional, Meyer, J., additional, Noei, H., additional, Boger, J., additional, Gribbon, P., additional, Ellinger, B., additional, Kuzikov, M., additional, Wolf, M., additional, Zhang, L., additional, Ehrt, C., additional, Pletzer-Zelgert, J., additional, Wollenhaupt, J., additional, Feiler, C., additional, Weiss, M., additional, Schulz, E.C., additional, Mehrabi, P., additional, Norton-Baker, B., additional, Schmidt, C., additional, Lorenzen, K., additional, Schubert, R., additional, Han, H., additional, Chari, A., additional, Fernandez Garcia, Y., additional, Turk, D., additional, Hilgenfeld, R., additional, Rarey, M., additional, Zaliani, A., additional, Chapman, H.N., additional, Pearson, A., additional, Betzel, C., additional, and Meents, A., additional

Published
2020
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17. Structure of apo SARS-CoV-2 Main Protease with small beta angle, space group C2.

Author

Guenther, S., primary, Reinke, P., additional, Oberthuer, D., additional, Yefanov, O., additional, Gelisio, L., additional, Ginn, H., additional, Lieske, J., additional, Domaracky, M., additional, Brehm, W., additional, Rahmani Mashour, A., additional, White, T.A., additional, Knoska, J., additional, Pena Esperanza, G., additional, Koua, F., additional, Tolstikova, A., additional, Groessler, M., additional, Fischer, P., additional, Hennicke, V., additional, Fleckenstein, H., additional, Trost, F., additional, Galchenkova, M., additional, Gevorkov, Y., additional, Li, C., additional, Awel, S., additional, Paulraj, L.X., additional, Ullah, N., additional, Andaleeb, H., additional, Werner, N., additional, Falke, S., additional, Hinrichs, W., additional, Alves Franca, B., additional, Schwinzer, M., additional, Brognaro, H., additional, Perbandt, M., additional, Tidow, H., additional, Seychell, B., additional, Beck, T., additional, Meier, S., additional, Doyle, J.J., additional, Giseler, H., additional, Melo, D., additional, Dunkel, I., additional, Lane, T.J., additional, Peck, A., additional, Saouane, S., additional, Hakanpaeae, J., additional, Meyer, J., additional, Noei, H., additional, Boger, J., additional, Gribbon, P., additional, Ellinger, B., additional, Kuzikov, M., additional, Wolf, M., additional, Zhang, L., additional, Ehrt, C., additional, Pletzer-Zelgert, J., additional, Wollenhaupt, J., additional, Feiler, C., additional, Weiss, M., additional, Schulz, E.C., additional, Mehrabi, P., additional, Norton-Baker, B., additional, Schmidt, C., additional, Lorenzen, K., additional, Schubert, R., additional, Han, H., additional, Chari, A., additional, Fernandez Garcia, Y., additional, Turk, D., additional, Hilgenfeld, R., additional, Rarey, M., additional, Zaliani, A., additional, Chapman, H.N., additional, Pearson, A., additional, Betzel, C., additional, and Meents, A., additional

Published
2020
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18. Structure of SARS-CoV-2 Main Protease bound to AT7519

Author

Guenther, S., primary, Reinke, P., additional, Oberthuer, D., additional, Yefanov, O., additional, Gelisio, L., additional, Ginn, H., additional, Lieske, J., additional, Domaracky, M., additional, Brehm, W., additional, Rahmani Mashour, A., additional, White, T.A., additional, Knoska, J., additional, Pena Esperanza, G., additional, Koua, F., additional, Tolstikova, A., additional, Groessler, M., additional, Fischer, P., additional, Hennicke, V., additional, Fleckenstein, H., additional, Trost, F., additional, Galchenkova, M., additional, Gevorkov, Y., additional, Li, C., additional, Awel, S., additional, Paulraj, L.X., additional, Ullah, N., additional, Andaleeb, H., additional, Werner, N., additional, Falke, S., additional, Hinrichs, W., additional, Alves Franca, B., additional, Schwinzer, M., additional, Brognaro, H., additional, Perbandt, M., additional, Tidow, H., additional, Seychell, B., additional, Beck, T., additional, Meier, S., additional, Doyle, J.J., additional, Giseler, H., additional, Melo, D., additional, Dunkel, I., additional, Lane, T.J., additional, Peck, A., additional, Saouane, S., additional, Hakanpaeae, J., additional, Meyer, J., additional, Noei, H., additional, Boger, J., additional, Gribbon, P., additional, Ellinger, B., additional, Kuzikov, M., additional, Wolf, M., additional, Zhang, L., additional, Ehrt, C., additional, Pletzer-Zelgert, J., additional, Wollenhaupt, J., additional, Feiler, C., additional, Weiss, M., additional, Schulz, E.C., additional, Mehrabi, P., additional, Norton-Baker, B., additional, Schmidt, C., additional, Lorenzen, K., additional, Schubert, R., additional, Han, H., additional, Chari, A., additional, Fernandez Garcia, Y., additional, Turk, D., additional, Hilgenfeld, R., additional, Rarey, M., additional, Zaliani, A., additional, Chapman, H.N., additional, Pearson, A., additional, Betzel, C., additional, and Meents, A., additional

Published
2020
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19. Structure of apo SARS-CoV-2 Main Protease with large beta angle, space group C2.

Author

Guenther, S., primary, Reinke, P., additional, Oberthuer, D., additional, Yefanov, O., additional, Gelisio, L., additional, Ginn, H., additional, Lieske, J., additional, Domaracky, M., additional, Brehm, W., additional, Rahmani Mashour, A., additional, White, T.A., additional, Knoska, J., additional, Pena Esperanza, G., additional, Koua, F., additional, Tolstikova, A., additional, Groessler, M., additional, Fischer, P., additional, Hennicke, V., additional, Fleckenstein, H., additional, Trost, F., additional, Galchenkova, M., additional, Gevorkov, Y., additional, Li, C., additional, Awel, S., additional, Paulraj, L.X., additional, Ullah, N., additional, Andaleeb, H., additional, Werner, N., additional, Falke, S., additional, Hinrichs, W., additional, Alves Franca, B., additional, Schwinzer, M., additional, Brognaro, H., additional, Perbandt, M., additional, Tidow, H., additional, Seychell, B., additional, Beck, T., additional, Meier, S., additional, Doyle, J.J., additional, Giseler, H., additional, Melo, D., additional, Dunkel, I., additional, Lane, T.J., additional, Peck, A., additional, Saouane, S., additional, Hakanpaeae, J., additional, Meyer, J., additional, Noei, H., additional, Boger, J., additional, Gribbon, P., additional, Ellinger, B., additional, Kuzikov, M., additional, Wolf, M., additional, Zhang, L., additional, Ehrt, C., additional, Pletzer-Zelgert, J., additional, Wollenhaupt, J., additional, Feiler, C., additional, Weiss, M., additional, Schulz, E.C., additional, Mehrabi, P., additional, Norton-Baker, B., additional, Schmidt, C., additional, Lorenzen, K., additional, Schubert, R., additional, Han, H., additional, Chari, A., additional, Fernandez Garcia, Y., additional, Turk, D., additional, Hilgenfeld, R., additional, Rarey, M., additional, Zaliani, A., additional, Chapman, H.N., additional, Pearson, A., additional, Betzel, C., additional, and Meents, A., additional

Published
2020
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25. Measurement of [formula omitted] dissolved in water at the Sudbury Neutrino Observatory

Author

Blevis, I, Boger, J, Bonvin, E, Cleveland, B.T, Dai, X, Dalnoki-Veress, F, Doucas, G, Farine, J, Fergani, H, Grant, D, Hahn, R.L, Hamer, A.S, Hargrove, C.K, Heron, H, Jagam, P, Jelley, N.A, Jillings, C, Knox, A.B, Lee, H.W, Levine, I, Liu, M, Majerus, S, McDonald, A, McFarlane, K, Mifflin, C, Noble, A.J, Noël, S, Novikov, V.M, Rowley, J.K, Shatkay, M, Simpson, J.J, Sinclair, D, Sur, B, Wang, J.-X, Yeh, M, and Zhu, X

Published
2004
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26. Measurement of radium concentration in water with Mn-coated beads at the Sudbury Neutrino Observatory

Author

Andersen, T.C., Blevis, I., Boger, J., Bonvin, E., Chen, M., Cleveland, B.T., Dai, X., Dalnoki-Veress, F., Doucas, G., Farine, J., Fergani, H., Ferraris, A.P., Fowler, M.M., Hahn, R.L., Hallman, E.D., Hargrove, C.K., Jagam, P., Jelley, N.A., Knox, A.B., Lee, H.W., Levine, I., Majerus, S., McFarlane, K., Mifflin, C., Miller, G.G., Noble, A.J., Palmer, P., Rowley, J.K., Shatkay, M., Simpson, J.J., Sinclair, D., Wang, J.-X., Wilhelmy, J.B., and Yeh, M.

Published
2003
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27. A radium assay technique using hydrous titanium oxide adsorbent for the Sudbury Neutrino Observatory

Author

Andersen, T.C, Black, R.A, Blevis, I, Boger, J, Bonvin, E, Chen, M, Cleveland, B.T, Dai, X, Dalnoki-Veress, F, Doucas, G, Farine, J, Fergani, H, Fowler, M.M, Hahn, R.L, Hallman, E.D, Hargrove, C.K, Heron, H, Hooper, E, Howard, K.H, Jagam, P, Jelley, N.A, Knox, A.B, Lee, H.W, Levine, I, Locke, W, Majerus, S, McFarlane, K, McGregor, G, Miller, G.G, Moorhead, M, Noble, A.J, Omori, M, Rowley, J.K, Shatkay, M, Shewchuk, C, Simpson, J.J, Sinclair, D, Tanner, N.W, Taplin, R.K, Trent, P.T, Wang, J.-X, Wilhelmy, J.B, and Yeh, M

Published
2003
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28. Baselining the New GSFC Information Systems Center: The Foundation for Verifiable Software Process Improvement

Author

Parra, A, Schultz, D, Boger, J, Condon, S, Webby, R, Morisio, M, Yakimovich, D, Carver, J, Stark, M, Basili, V, and Kraft, S

Subjects
Computer Programming And Software
Abstract

This paper describes a study performed at the Information System Center (ISC) in NASA Goddard Space Flight Center. The ISC was set up in 1998 as a core competence center in information technology. The study aims at characterizing people, processes and products of the new center, to provide a basis for proposing improvement actions and comparing the center before and after these actions have been performed. The paper presents the ISC, goals and methods of the study, results and suggestions for improvement, through the branch-level portion of this baselining effort.

Published
1999

34. GALLEX solar neutrino observations: results for GALLEX IV

Author

Hampel, W., Handt, J., Heusser, G., Kiko, J., Kirsten, T., Laubenstein, M., Pernicka, E., Rau, W., Wojcik, M., Zakharov, Y., Ammon, R.v., Ebert, K.H., Fritsch, T., Heidt, D., Henrich, E., Stielglitz, L., Weirich, F., Balata, M., Sann, M., Hartmann, F.X., Bellotti, E., Cattadori, C., Cremonesi, O., Ferrari, N., Fiorini, E., Zanotti, L., Altmann, M., Feilitzsch, F.v., Mößbauer, R., Wänninger, S., Berthomieu, G., Schatzman, E., Carmi, I., Dostrovsky, I., Bacci, C., Belli, P., Bernabei, R., d'Angelo, S., Paoluzi, L., Cribier, M., Rich, J., Spiro, M., Tao, C., Vignaud, D., Boger, J., Hahn, R.L., Rowley, J.K., Stoenner, R.W., and Weneser, J.

Published
1999
Full Text
View/download PDF

36. Measurement of Rn-222 dissolved in water at the Sudbury neutrino observatory

Author

Blevis, I, Boger, J, Bonvin, E, Cleveland, B, Dai, X, Dalnoki-Veress, F, Doucas, G, Farine, J, Fergani, H, Grant, D, Hahn, R, Hamer, A, Hargrove, C, Heron, H, Jagam, P, Jelley, N, Jillings, C, Knox, AB, Lee, H, Levine, I, Liu, M, Majerus, S, McDonald, A, McFarlane, K, and Mifflin, C

Abstract

The technique used at the Sudbury Neutrino Observatory (SNO) to measure the concentration of 222Rn in water is described. Water from the SNO detector is passed through a vacuum degasser (in the light water system) or a membrane contact degasser (in the heavy water system) where dissolved gases, including radon, are liberated. The degasser is connected to a vacuum system which collects the radon on a cold trap and removes most other gases, such as water vapor and N2. After roughly 0.5 tonnes of H2O or 6 tonnes of D2O have been sampled, the accumulated radon is transferred to a Lucas cell. The cell is mounted on a photomultiplier tube which detects the α-particles from the decay of 222Rn and its progeny. The overall degassing and concentration efficiency is about 38% and the single-α counting efficiency is approximately 75%. The sensitivity of the radon assay system for D2O is equivalent to ∼ 3 × 10-15 g U/g water. The radon concentration in both the H 2O and D2O is sufficiently low that the rate of background events from U-chain elements is a small fraction of the interaction rate of solar neutrinos by the neutral current reaction. © 2003 Elsevier B.V. All rights reserved.

Published
2016

37. Measurement of the rate of ve + d → p + p + e- interactions produced by 8B solar neutrinos at the sudbury neutrino observatory

Author

Ahmad, Q, Allen, R, Andersen, T, Anglin, J, Bühler, G, Barton, J, Beier, E, Bercovitch, M, Bigu, J, Biller, S, Black, R, Blevis, I, Bardman, R, Boger, J, Bonvin, E, Boulay, MG, Bowler, MG, Bowles, T, Brice, S, Browne, M, Bullard, T, Burritt, T, Cameron, K, Cameron, J, and Chan, Y

Abstract

The 8B flux from elastic scattering (ES) and charged current (CC) of electrons was recorded at the Sudbury Neutrino Observatory (SNO) between November 2, 1999 and January 15, 2001. Data were partitioned into two sets then analyzed. As a result, the first direct indication of a nonelectron flavor component in the solar neutrino flux was established.

Published
2016

38. Determination of the νe and total B8 solar neutrino fluxes using the Sudbury Neutrino Observatory Phase I data set

Author

Aharmim, B, Ahmad, Q, Ahmed, SN, Allen, R, Andersen, T, Anglin, J, Bühler, G, Barton, J, Beier, E, Bercovitch, M, Bergevin, M, Bigu, J, Biller, S, Black, R, Blevis, I, Boardman, R, Boger, J, Bonvin, E, Boulay, MG, Bowler, MG, Bowles, T, Brice, S, Browne, M, Bullard, T, and Burritt, T

Abstract

This article provides the complete description of results from the Phase I data set of the Sudbury Neutrino Observatory (SNO). The Phase I data set is based on a 0.65 kiloton-year exposure of 2H2O (in the following denoted as D2O) to the solar B8 neutrino flux. Included here are details of the SNO physics and detector model, evaluations of systematic uncertainties, and estimates of backgrounds. Also discussed are SNO's approach to statistical extraction of the signals from the three neutrino reactions (charged current, neutral current, and elastic scattering) and the results of a search for a day-night asymmetry in the νe flux. Under the assumption that the B8 spectrum is undistorted, the measurements from this phase yield a solar νe flux of (νe)=1.76-0.05+0. 05(stat.)-0.09+0.09(syst.)×106 cm-2 s-1 and a non-νe component of (νμτ)=3.41-0.45+0.45(stat.)-0.45+0.48(syst.)×106 cm-2 s-1. The sum of these components provides a total flux in excellent agreement with the predictions of standard solar models. The day-night asymmetry in the νe flux is found to be Ae=7.0±4.9(stat.)-1.2+1.3%(syst.), when the asymmetry in the total flux is constrained to be zero. © 2007 The American Physical Society.

Published
2016

40. Measurement of the total active 8B solar neutrino flux at the Sudbury Neutrino Observatory with enhanced neutral current sensitivity

Author

Ahmed, SN, Anthony, A, Beier, E, Bellerive, A, Biller, S, Boger, J, Boulay, MG, Bowler, MG, Bowles, T, Brice, S, Bullard, T, Chan, Y, Chen, M, Chen, X, Cleveland, B, Cox, G, Dai, X, Dalnoki-Veress, F, Doe, P, Dosanjh, R, Doucas, G, Dragowsky, MR, Duba, C, Duncan, F, and Dunford, M

Abstract

The Sudbury Neutrino Observatory has precisely determined the total active (nu(x)) 8B solar neutrino flux without assumptions about the energy dependence of the nu(e) survival probability. The measurements were made with dissolved NaCl in heavy water to enhance the sensitivity and signature for neutral-current interactions. The flux is found to be 5.21 +/- 0.27(stat)+/-0.38(syst) x 10(6) cm(-2) s(-1), in agreement with previous measurements and standard solar models. A global analysis of these and other solar and reactor neutrino results yields Deltam(2)=7.1(+1.2)(-0.6) x 10(-5) eV(2) and theta=32.5(+2.4)(-2.3) degrees. Maximal mixing is rejected at the equivalent of 5.4 standard deviations.

Published
2016

41. Electron energy spectra, fluxes, and day-night asymmetries of B-8 solar neutrinos from measurements with NaCl dissolved in the heavy-water detector at the Sudbury Neutrino Observatory

Author

Aharmim, B, Ahmed, SN, Anthony, A, Beier, E, Bellerive, A, Bergevin, M, Biller, S, Boger, J, Boulay, MG, Bowler, MG, Bullard, T, Chan, Y, Chen, M, Chen, X, Cleveland, B, Cox, G, Currat, C, Dai, X, Dalnoki-Veress, F, Deng, H, Doe, P, Dosanjh, R, Doucas, G, Duba, C, and Duncan, F

Abstract

Results are reported from the complete salt phase of the Sudbury Neutrino Observatory experiment in which NaCl was dissolved in the H22O ("D2O") target. The addition of salt enhanced the signal from neutron capture as compared to the pure D2O detector. By making a statistical separation of charged-current events from other types based on event-isotropy criteria, the effective electron recoil energy spectrum has been extracted. In units of 106cm-2s-1, the total flux of active-flavor neutrinos from B8 decay in the Sun is found to be 4.94-0.21+0.21(stat)-0.34+0.38(syst) and the integral flux of electron neutrinos for an undistorted B8 spectrum is 1.68-0.06+0.06(stat)-0. 09+0.08(syst); the signal from (νx,e) elastic scattering is equivalent to an electron-neutrino flux of 2.35-0.22+0.22(stat)-0.15+0.15(syst). These results are consistent with those expected for neutrino oscillations with the so-called large mixing angle parameters and also with an undistorted spectrum. A search for matter-enhancement effects in the Earth through a possible day-night asymmetry in the charged-current integral rate is consistent with no asymmetry. Including results from other experiments, the best-fit values for two-neutrino mixing parameters are Δm2=(8.0-0.4+0.6)×10-5 eV2 and θ=33.9-2.2+2.4 degrees. © 2005 The American Physical Society.

Published
2016

45. Recent Results from SNO

Author

Sinclair, D, Kutter, T, Nally, CW, Oser, SM, Waltham, CE, Boger, J, Hahn, RL, Lange, R, Yeh, M, Bellerive, A, Dai, X, Dalnoki-Veress, F, Dosanjh, RS, Grant, DR, Hargrove, CK, Hemingway, RJ, Levine, I, Mifflin, C, Rollin, E, Simard, O, Starinsky, N, Tesic, G, Waller, D, Jagam, P, Labranche, H, Law, J, Lawson, IT, Nickel, BG, Ollerhead, RW, Simpson, JJ, Farine, J, Fleurot, F, Hallman, ED, Luoma, S, Schwendener, MH, Tafirout, R, Virtue, CJ, Chan, YD, Chen, X, Heeger, KM, Lesko, KT, Marino, AD, Norman, EB, Okada, CE, Poon, AWP, Rosendahl, SSE, Stokstad, RG, Boulay, MG, Bowles, TJ, Brice, SJ, Dragowsky, MR, Elliott, SR, Fowler, MM, Hamer, AS, Heise, J, Hime, A, Miller, GG, Van de Water, RG, Wilhelmy, JB, Wouters, JM, Biller, SD, Bowler, MG, Cleveland, BT, Doucas, G, Dunmore, JA, Fergani, H, Frame, K, Jelley, NA, Majerus, S, McGregor, G, Peeters, SJM, Sims, CJ, Thorman, M, Tseung, HWC, West, N, Wilson, JR, Zuber, K, Beier, EW, Dunford, M, Heintzelman, WJ, Kyba, CCM, McCauley, N, Rusu, VL, Van Berg, R, Ahmed, SN, Chen, M, Duncan, FA, Earle, ED, Fulsom, BG, Evans, HC, Ewan, GT, Graham, K, Hallin, AL, Handler, WB, Harvey, PJ, Kos, MS, Krumins, AV, Leslie, JR, and MacLellan, R

Subjects
Heavy water, chemistry.chemical_classification, Nuclear and High Energy Physics, chemistry.chemical_compound, Materials science, chemistry, Seesaw molecular geometry, Chemical engineering, Phase (matter), Salt (chemistry), Nanotechnology, Atomic and Molecular Physics, and Optics
Abstract

The SNO project has now completed two of its three major phases of operation. The no-oscillation hypothesis has been ruled out at 5σ in the pure heavy water phase and 8σ in the salt phase. Discussion in terms of the SeeSaw model is presented. © 2004 Published by Elsevier B.V.

Published
2004

47. Determination of the nu(e) and total B-8 solar neutrino fluxes using the Sudbury Neutrino Observatory Phase I data set

Author

Aharmim, B, Ahmad, QR, Ahmed, SN, Allen, RC, Andersen, TC, Anglin, JD, Buehler, G, Barton, JC, Beier, EW, Bercovitch, M, Bergevin, M, Bigu, J, Biller, SD, Black, RA, Blevis, I, Boardman, RJ, Boger, J, Bonvin, E, Boulay, MG, Bowler, MG, Bowles, TJ, Brice, SJ, Browne, MC, Bullard, TV, Burritt, TH, Cameron, J, Chan, YD, Chen, HH, Chen, M, Chen, X, Cleveland, BT, Cowan, JHM, Cowen, DF, Cox, GA, Currat, CA, Dai, X, Dalnoki-Veress, F, Davidson, WF, Deng, H, DiMarco, M, Doe, PJ, Doucas, G, Dragowsky, MR, Duba, CA, Duncan, FA, Dunford, M, Dunmore, JA, Earle, ED, Elliott, SR, Evans, HC, Ewan, GT, Farine, J, Fergani, H, Ferraris, AP, Fleurot, F, Ford, RJ, Formaggio, JA, Fowler, MM, Frame, K, Frank, ED, Frati, W, Gagnon, N, Germani, JV, Gil, S, Goldschmidt, A, Goon, JTM, Graham, K, Grant, DR, Guillian, E, Hahn, RL, Hallin, AL, Hallman, ED, Hamer, AS, Hamian, AA, Handler, WB, Haq, RU, Hargrove, CK, Harvey, PJ, Hazama, R, Heeger, KM, Heintzelman, WJ, Heise, J, Helmer, RL, Henning, R, Hepburn, JD, Heron, H, Hewett, J, Hime, A, Howard, C, Howe, MA, Huang, M, Hykaway, JG, Isaac, MCP, Jagam, P, Jamieson, B, Jelley, NA, Jillings, C, Jonkmans, G, Kazkaz, K, Keener, PT, Kirch, K, Klein, JR, Knox, AB, Komar, RJ, Kormos, LL, Kos, M, Kouzes, R, Krueger, A, Kraus, C, Krauss, CB, Kutter, T, Kyba, CCM, Labranche, H, Lange, R, Law, J, Lawson, IT, Lay, M, Lee, HW, Lesko, KT, Leslie, JR, Levine, I, Loach, JC, Locke, W, Luoma, S, Lyon, J, MacLellan, R, Majerus, S, Mak, HB, Maneira, J, Marino, AD, Martin, R, McCauley, N, McDonald, AB, McDonald, DS, McFarlane, K, McGee, S, McGregor, G, Drees, RM, Mes, H, Mifflin, C, Miknaitis, KKS, Miller, ML, Milton, G, Moffat, BA, Monreal, B, Moorhead, M, Morrissette, B, Nally, CW, Neubauer, MS, Newcomer, FM, Ng, HS, Nickel, BG, Noble, AJ, Norman, EB, Novikov, VM, Oblath, NS, Okada, CE, O'Keeffe, HM, Ollerhead, RW, Omori, M, Orrell, JL, Oser, SM, Ott, R, Peeters, SJM, Poon, AWP, Prior, G, Reitzner, SD, Rielage, K, Roberge, A, Robertson, BC, Robertson, RGH, Rosendahl, SSE, Rowley, JK, Rusu, VL, Saettler, E, Schulke, A, Schwendener, MH, Secrest, JA, Seifert, H, Shatkay, M, Simpson, JJ, Sims, CJ, Sinclair, D, Skensved, P, Smith, AR, Smith, MWE, Starinsky, N, Steiger, TD, Stokstad, RG, Stonehill, LC, Storey, RS, Sur, B, Tafirout, R, Tagg, N, Takeuchi, Y, Tanner, NW, Taplin, RK, Thorman, M, Thornewell, PM, Tolich, N, Trent, PT, Tserkovnyak, YI, Tsui, T, Tunnell, CD, Van Berg, R, De Water, RGV, Virtue, CJ, Walker, TJ, Wall, BL, Waltham, CE, Tseung, HWC, Wang, J-X, Wark, DL, Wendland, J, West, N, Wilhelmy, JB, Wilkerson, JF, Wilson, JR, Wittich, P, Wouters, JM, Wright, A, Yeh, M, Zuber, K, and Collaboration, SNO

Published
2007

48. Determination of the νe and total B8 solar neutrino fluxes using the Sudbury Neutrino Observatory Phase I data set

Author

Aharmim, B., Ahmad, Q. R., Ahmed, S. N., Allen, R. C., Andersen, T. C., Anglin, John, Bühler, G., Barton, J. C., Beier, E. W., Bercovitch, M., Bergevin, 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., Burritt, T. H., Cameron, J., Chan, Y. D., Chen, H. H., Chen, M., Chen, X., Cleveland, B. T., Cowan, J. H., Cowen, D. F., Cox, G. A., Currat, C. A., Dai, X., Dalnoki-Veress, F., Davidson, W. F., Deng, H., Dimarco, M., 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., Ferraris, A. P., Fleurot, F., Ford, R. J., Formaggio, J. A., Fowler, M. M., Frame, K., Frank, E. D., Frati, W., Gagnon, N., Germani, J. V., Gil, S., Goldschmidt, A., Goon, J. T., Graham, K., Grant, D. R., Guillian, E., Hahn, R. L., Hallin, A. L., Hallman, E. D., Hamer, A. S., Hamian, A. A., Handler, W. B., Haq, R. U., Hargrove, C. K., Harvey, P. J., Hazama, R., Heeger, K. M., Heintzelman, W. J., Heise, J., Helmer, R. L., Henning, R., Hepburn, J. D., Heron, H., Hewett, J., Hime, A., Howard, C., Howe, M. A., Huang, M., Hykaway, J. G., Isaac, M. C., Jagam, P., Jamieson, B., Jelley, N. A., Jillings, C., Jonkmans, G., Kazkaz, K., Keener, P. T., Kirch, K., Klein, J. R., Knox, A. B., Komar, R. J., Kormos, L. L., Kos, M., Kouzes, R., Krüger, A., Kraus, C., Krauss, C. B., Kutter, T., Kyba, C. C., Labranche, H., Lange, R., Law, J., Lawson, I. T., Lay, M., Lee, H. W., Lesko, K. T., Leslie, J. R., Levine, I., Loach, J. C., Locke, W., Luoma, S., Lyon, J., MacLellan, R., Majerus, S., Mak, H. B., Maneira, J., Marino, A. D., Martin, R., McCauley, N., McDonald, A. B., McDonald, D. S., McFarlane, K., McGee, S., McGregor, G., Drees, R. Meijer, Mes, H., Mifflin, C., Miknaitis, K. K., Miller, M. L., Milton, G., Moffat, B. A., Monreal, B., Moorhead, M., Morrissette, B., Nally, C. W., Neubauer, M. S., Newcomer, F. M., Ng, H. S., Nickel, B. G., Noble, A. J., Norman, E. B., Novikov, V. M., Oblath, N. S., Okada, C. E., O'Keeffe, H. M., Ollerhead, R. W., Omori, M., Orrell, J. L., Oser, S. M., Ott, R., Peeters, S. J., Poon, A. W., Prior, G., Reitzner, S. D., Rielage, K., Roberge, A., Robertson, B. C., Robertson, R. G., Rosendahl, S. S., Rowley, J. K., Rusu, V. L., Saettler, E., Schülke, A., Schwendener, M. H., Secrest, J. A., Seifert, H., Shatkay, M., Simpson, J. J., Sims, C. J., Sinclair, D., Skensved, P., Smith, A. R., Smith, M. W., Starinsky, N., Steiger, T. D., Stokstad, R. G., Stonehill, L. C., Storey, R. S., Sur, B., Tafirout, R., Tagg, N., Takeuchi, Y., Tanner, N. W., Taplin, R. K., Thorman, M., Thornewell, P. M., Tolich, N., Trent, P. T., Tserkovnyak, Y. I., Tsui, T., Tunnell, C. D., Van Berg, R., Water, R. G., Virtue, C. J., Walker, T. J., Wall, B. L., Waltham, C. E., Tseung, H. Wan Chan, Wang, J. -X., Wark, D. L., Wendland, J., West, N., Wilhelmy, J. B., Wilkerson, J. F., Wilson, J. R., Wittich, P., Wouters, J. M., Wright, A., Yeh, M., and Zuber, K.

Subjects
High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment
Abstract

This article provides the complete description of results from the Phase I data set of the Sudbury Neutrino Observatory (SNO). The Phase I data set is based on a 0.65 kiloton-year exposure of 2H2O (in the following denoted as D2O) to the solar B8 neutrino flux. Included here are details of the SNO physics and detector model, evaluations of systematic uncertainties, and estimates of backgrounds. Also discussed are SNO's approach to statistical extraction of the signals from the three neutrino reactions (charged current, neutral current, and elastic scattering) and the results of a search for a day-night asymmetry in the νe flux. Under the assumption that the B8 spectrum is undistorted, the measurements from this phase yield a solar νe flux of (νe)=1.76-0.05+0. 05(stat.)-0.09+0.09(syst.)×106 cm-2 s-1 and a non-νe component of (νμτ)=3.41-0.45+0.45(stat.)-0.45+0.48(syst.)×106 cm-2 s-1. The sum of these components provides a total flux in excellent agreement with the predictions of standard solar models. The day-night asymmetry in the νe flux is found to be Ae=7.0±4.9(stat.)-1.2+1.3%(syst.), when the asymmetry in the total flux is constrained to be zero. © 2007 The American Physical Society.

Published
2007
Full Text
View/download PDF

49. Electron energy spectra, fluxes, and day-night asymmetries of B-8 solar neutrinos from measurements with NaCl dissolved in the heavy-water detector at the Sudbury Neutrino Observatory

Author

Aharmim, B, Ahmed, SN, Anthony, AE, Beier, EW, Bellerive, A, Bergevin, M, Biller, SD, Boger, J, Boulay, MG, Bowler, MG, Bullard, TV, Chan, YD, Chen, M, Chen, X, Cleveland, BT, Cox, GA, Currat, CA, Dai, X, Dalnoki-Veress, F, Deng, H, Doe, PJ, Dosanjh, RS, Doucas, G, Duba, CA, Duncan, FA, Dunford, M, Dunmore, JA, Earle, ED, Elliott, SR, Evans, HC, Ewan, GT, Farine, J, Fergani, H, Fleurot, F, Formaggio, JA, Frame, K, Frati, W, Fulsom, BG, Gagnon, N, Graham, K, Grant, DR, Hahn, RL, Hall, JC, Hallin, AL, Hallman, ED, Handler, WB, Hargrove, CK, Harvey, PJ, Hazama, R, Heeger, KM, Heelan, L, Heintzelman, WJ, Heise, J, Helmer, RL, Hemingway, RJ, Hime, A, Howard, C, Howe, MA, Huang, M, Jagam, P, Jelley, NA, Klein, JR, Kormos, LL, Kos, MS, Kruger, A, Kraus, C, Krauss, CB, Krumins, AV, Kutter, T, Kyba, CCM, Labranche, H, Lange, R, Law, J, Lawson, IT, Lesko, KT, Leslie, JR, Levine, I, Loach, JC, Luoma, S, MacLellan, R, Majerus, S, Mak, HB, Maneira, J, Marino, AD, McCauley, N, McDonald, AB, McGee, S, McGregor, G, Mifflin, C, Miknaitis, KKS, Moffat, BA, Nally, CW, Neubauer, MS, Nickel, BG, Noble, AJ, Norman, EB, Oblath, NS, Okada, CE, Ollerhead, RW, Orrell, JL, Oser, SM, Ouellet, C, Peeters, SJM, Poon, AWP, Rielage, K, Robertson, BC, Robertson, RGH, Rollin, E, Rosendahl, SSE, Rusu, VL, Schwendener, MH, Seibert, SR, Simard, O, Simpson, JJ, Sims, CJ, Sinclair, D, Skensved, P, Smith, MWE, Starinsky, N, Stokstad, RG, Stonehill, LC, Tafirout, R, Takeuchi, Y, Tesic, G, Thomson, M, Thorman, M, Tsui, T, Van Berg, R, Van de Water, RG, Virtue, CJ, Wall, BL, Waller, D, Waltham, CE, Tseung, HWC, Wark, DL, Wendland, J, West, N, Wilkerson, JF, Wilson, JR, Wittich, P, Wouters, JM, Wright, A, Yeh, M, Zuber, K, and Collaboration, SNO

Subjects
High Energy Physics::Experiment, Astrophysics::Cosmology and Extragalactic Astrophysics, Nuclear Experiment
Abstract

Results are reported from the complete salt phase of the Sudbury Neutrino Observatory experiment in which NaCl was dissolved in the H22O ("D2O") target. The addition of salt enhanced the signal from neutron capture as compared to the pure D2O detector. By making a statistical separation of charged-current events from other types based on event-isotropy criteria, the effective electron recoil energy spectrum has been extracted. In units of 106cm-2s-1, the total flux of active-flavor neutrinos from B8 decay in the Sun is found to be 4.94-0.21+0.21(stat)-0.34+0.38(syst) and the integral flux of electron neutrinos for an undistorted B8 spectrum is 1.68-0.06+0.06(stat)-0. 09+0.08(syst); the signal from (νx,e) elastic scattering is equivalent to an electron-neutrino flux of 2.35-0.22+0.22(stat)-0.15+0.15(syst). These results are consistent with those expected for neutrino oscillations with the so-called large mixing angle parameters and also with an undistorted spectrum. A search for matter-enhancement effects in the Earth through a possible day-night asymmetry in the charged-current integral rate is consistent with no asymmetry. Including results from other experiments, the best-fit values for two-neutrino mixing parameters are Δm2=(8.0-0.4+0.6)×10-5 eV2 and θ=33.9-2.2+2.4 degrees. © 2005 The American Physical Society.

Published
2005

50. Electron energy spectra, fluxes, and day-night asymmetries of 8B solar neutrinos from measurements with NaCl dissolved in the heavy-water detector at the Sudbury Neutrino Observatory

Author

Aharmim, B, Ahmed, S, Anthony, A, Beier, E, Bellerive, A, Bergevin, M, Biller, S, Boger, J, Boulay, M, Bowler, M, Bullard, T, Chan, Y, Chen, M, Chen, X, Cleveland, B, Cox, G, Currat, C, Dai, X, Dalnoki-Veress, F, Deng, H, Doe, P, Dosanjh, R, Doucas, G, Duba, C, Duncan, F, Dunford, M, Dunmore, J, Earle, E, Elliott, S, Evans, H, Ewan, G, Farine, J, Fergani, H, Fleurot, F, Formaggio, J, Frame, K, Frati, W, Fulsom, B, Gagnon, N, Graham, K, Grant, D, Hahn, R, Hall, J, Hallin, A, Hallman, E, Handler, W, Hargrove, C, Harvey, P, Hazama, R, Heeger, K, Heelan, L, Heintzelman, W, Heise, J, Helmer, R, Hemingway, R, Hime, A, Howard, C, Howe, M, Huang, M, Jagam, P, Jelley, N, Klein, J, Kormos, L, Kos, M, Krüger, A, Kraus, C, Krauss, C, Krumins, A, Kutter, T, Kyba, C, Labranche, H, Lange, R, Law, J, Lawson, I, Lesko, K, Leslie, J, Levine, I, Loach, J, Luoma, S, MacLellan, R, Majerus, S, Mak, H, Maneira, J, Marino, A, McCauley, N, McDonald, A, McGee, S, McGregor, G, Mifflin, C, Miknaitis, K, Moffat, B, Nally, C, Neubauer, M, Nickel, B, Noble, A, Norman, E, Oblath, N, Okada, C, Ollerhead, R, Orrell, J, Oser, S, Ouellet, C, Peeters, S, Poon, A, Rielage, K, Robertson, B, Robertson, R, Rollin, E, Rosendahl, S, Rusu, V, Schwendener, M, Seibert, S, Simard, O, Simpson, J, Sims, C, Sinclair, D, Skensved, P, Smith, M, Starinsky, N, Stokstad, R, Stonehill, L, Tafirout, R, Takeuchi, Y, Tešić, G, Thomson, M, Thorman, M, Tsui, T, Berg, R, Water, R, Virtue, C, Wall, B, Waller, D, Waltham, C, Tseung, H, Wark, D, Wendland, J, West, N, Wilkerson, J, Wilson, J, Wittich, P, Wouters, J, Wright, A, Yeh, M, and Zuber, K

Published
2005

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