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Constraints on Nucleon Decay via Invisible Modes from the Sudbury Neutrino Observatory

2004; American Physical Society; Volume: 92; Issue: 10 Linguagem: Inglês

10.1103/physrevlett.92.102004

1092-0145

S. N. Ahmed, A. E. Anthony, E. W. Beier, A. Bellerive, S. D. Biller, J. Boger, M. G. Boulay, M. G. Bowler, 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. Dunmore, E. D. Earle, S. R. Elliott, H. C. Evans, G. T. Ewan, J. Farine, H. Fergani, F. Fleurot, J. A. Formaggio, M. M. Fowler, K. C. Frame, W. Frati, B. G. Fulsom, N. Gagnon, K. Graham, D. R. Grant, R. L. Hahn, James C. Hall, A. L. Hallin, E. D. Hallman, A. S. Hamer, W. B. Handler, C. K. Hargrove, P. J. Harvey, R. Hazama, K. M. Heeger, W. J. Heintzelman, J. Heise, R. L. Helmer, R.J. Hemingway, A. Hime, M. A. Howe, P. Jagam, N.A. Jelley, J. R. Klein, M. Kos, A. V. Krumins, T. Kutter, Christopher C. M. Kyba, H. Labranche, R. Lange, J. Law, I. Lawson, K. T. Lesko, J. R. Leslie, I. Levine, S. Luoma, R. MacLellan, Steve Majerus, H.‐B. Mak, J. Maneira, A. D. Marino, N. McCauley, A. B. McDonald, S. McGee, G. McGregor, C. Mifflin, K. K. S. Miknaitis, Guthrie Miller, B. A. Moffat, C. W. Nally, M. S. Neubauer, B. G. Nickel, A. J. Noble, E. B. Norman, N. S. Oblath, C. Okada, R. W. Ollerhead, J. L. Orrell, S. M. Oser, C. Ouellet, S. J. M. Peeters, A. W. P. Poon, B.C. Robertson, R. G. H. Robertson, E. Rollin, S. S. E. Rosendahl, Vadim Rusu, M. H. Schwendener, O. Simard, J. J. Simpson, C. J. Sims, D. Sinclair, P. Skensved, M. W. E. Smith, N. Starinsky, R. G. Stokstad, L. C. Stonehill, R. Tafirout, Y. Takeuchi, G. Tešić, M. Thomson, M. Thorman, R. Van Berg, R. G. Van de Water, C.J. Virtue, B. L. Wall, D. Waller, Chris Waltham, H. Wan Chan Tseung, D. L. Wark, N. West, J.B. Wilhelmy, J. F. Wilkerson, J. R. Wilson, P. Wittich, J.M. Wouters, M. Yeh, Κ. Zuber,

Astrophysics and Cosmic Phenomena

Data from the Sudbury Neutrino Observatory have been used to constrain the lifetime for nucleon decay to ``invisible'' modes, such as $n\ensuremath{\rightarrow}3\ensuremath{\nu}$. The analysis was based on a search for $\ensuremath{\gamma}$ rays from the deexcitation of the residual nucleus that would result from the disappearance of either a proton or neutron from $^{16}\mathrm{O}$. A limit of ${\ensuremath{\tau}}_{\mathrm{inv}}>2\ifmmode\times\else\texttimes\fi{}{10}^{29}\text{ }\text{ }\mathrm{yr}$ is obtained at 90% confidence for either neutron- or proton-decay modes. This is about an order of magnitude more stringent than previous constraints on invisible proton-decay modes and 400 times more stringent than similar neutron modes.