Ryuta Hazama

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Observations of neutral-current nu interactions on deuterium in the Sudbury Neutrino Observatory are reported. Using the neutral current (NC), elastic scattering, and charged current reactions and assuming the standard 8B shape, the nu(e) component of the 8B solar flux is phis(e) = 1.76(+0.05)(-0.05)(stat)(+0.09)(-0.09)(syst) x 10(6) cm(-2) s(-1) for a(More)
B. Aharmim,5 S.N. Ahmed,11 A.E. Anthony,13 E.W. Beier,10 A. Bellerive,3 M. Bergevin,4 S.D. Biller,9 J. Boger,2, a M.G. Boulay,7 M.G. Bowler,9 T.V. Bullard,15 Y.D. Chan,6 M. Chen,11 X. Chen,6, b B.T. Cleveland,9 G.A. Cox,15 C.A. Currat,6 X. Dai,3, 9 F. Dalnoki-Veress,3 H. Deng,10 P.J. Doe,15 R.S. Dosanjh,3 G. Doucas,9 C.A. Duba,15 F.A. Duncan,11 M.(More)
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(More)
C. E. Aalseth1, F. T. Avignone III2, A. Barabash3, F. Boehm4, R. L. Brodzinski1, J. I. Collar5, P. J. Doe6, H. Ejiri7, S. R. Elliott6∗ , E. Fiorini8, R.J. Gaitskell9, G. Gratta10, R. Hazama6, K. Kazkaz6, G. S. King III2, R. T. Kouzes1, H. S. Miley1, M. K. Moe11, A. Morales12, J. Morales12, A. Piepke13, R. G. H. Robertson6, W. Tornow14, P. Vogel4, R. A.(More)
Data from the Sudbury Neutrino Observatory have been used to constrain the lifetime for nucleon decay to "invisible" modes, such as n-->3nu. The analysis was based on a search for gamma rays from the deexcitation of the residual nucleus that would result from the disappearance of either a proton or neutron from 16O. A limit of tau(inv)>2 x 10(29) yr is(More)
B. Aharmim,6 S. N. Ahmed,14 A. E. Anthony,17,* N. Barros,8 E. W. Beier,13 A. Bellerive,4 B. Beltran,1 M. Bergevin,5,7 S. D. Biller,12 K. Boudjemline,4 M. G. Boulay,14 T. H. Burritt,19 B. Cai,14 Y. D. Chan,7 D. Chauhan,6 M. Chen,14 B. T. Cleveland,12 G. A. Cox,19 X. Dai,4,12,14 H. Deng,13 J. Detwiler,7 M. DiMarco,14 P. J. Doe,19 G. Doucas,12 P.-L. Drouin,4(More)
An array of Neutral-Current Detectors (NCDs) has been built in order to make a unique measurement of the total active flux of solar neutrinos in the Sudbury Neutrino Observatory (SNO). Data in the third phase of the SNO experiment were collected between November 2004 and November 2006, after the NCD array was added to improve the neutral-current sensitivity(More)
B. Aharmim, S. N. Ahmed, E.W. Beier, A. Bellerive, S. D. Biller, J. Boger, M. G. Boulay, T. J. Bowles, S. J. Brice, T.V. Bullard, Y. D. Chan, M. Chen, X. Chen, B.T. Cleveland, G. A. Cox, X. Dai, F. Dalnoki-Veress, P. J. Doe, R. S. Dosanjh, G. Doucas, M. R. Dragowsky, C. A. Duba, F. A. Duncan, M. Dunford, J. A. Dunmore, E. D. Earle, S. R. Elliott, H. C.(More)
B. Aharmim, S. N. Ahmed, J. F. Amsbaugh, A. E. Anthony, J. Banar, N. Barros, E.W. Beier, A. Bellerive, B. Beltran, M. Bergevin, S. D. Biller, K. Boudjemline, M.G. Boulay, T. J. Bowles, M. C. Browne, T. V. Bullard, T. H. Burritt, B. Cai, Y.D. Chan, D. Chauhan, M. Chen, B. T. Cleveland, G.A. Cox-Mobrand, C. A. Currat, X. Dai, H. Deng, J. Detwiler, M. DiMarco,(More)
B. Aharmim, S. N. Ahmed, A. E. Anthony, a N. Barros, b E. W. Beier, A. Bellerive, B. Beltran, M. Bergevin, 5, c S. D. Biller, K. Boudjemline, 14 M. G. Boulay, B. Cai, Y. D. Chan, D. Chauhan, M. Chen, B. T. Cleveland, G. A. Cox, d X. Dai, 12, 4 H. Deng, J. A. Detwiler, M. DiMarco, P. J. Doe, G. Doucas, P.-L. Drouin, F. A. Duncan, 14 M. Dunford, e E. D.(More)