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Pearce, G. J. Bock, G. J. Feldman, G. Koizumi, G. Lefeuvre, G. M. Irwin, G. Pawloski, G. Tzanakos, H. A. Rubin, H. B. Newman, H. R. Gallagher, I. Z. Danko, J. A. B. Coelho, J. A. Nowak, J. Hartnell, J. Hylen, J. J. Evans, J. J. Walding, J. K. de Jong, J. K. Nelson, J. Ling, J. Mitchell, J. Musser, J. Paley, J. P. Ochoa-Ricoux, J. Ratchford, J. R. Meier, J. Schneps, J. Thomas, J. Urheim, K. Grzelak, K. Lang, L. Corwin, L. Loiacono, L. Mualem, L. Whitehead, M. A. Thomson, M. Betancourt, M. Bishai, M. C. Goodman, M. C. Sanchez, M. D. Messier, M. Dorman, MINOS Collaboration: P. Adamson, M. Kordosky, M. L. Marshak, M. Mathis, M. Orchanian, M. V. Diwan, M. V. Frohne, N. E. Devenish, N. Graf, N. Mayer, N. Tagg, P. Gouffon, P. J. Litchfield, P. Lucas, P. Schreiner, P. Shanahan, P. Vahle, R. A. Gomes, R. B. Patterson, R. C. Webb, R. Gran, R. Hatcher, R. J. Nichol, R. K. Plunkett, R. L. Talaga, R. Mehdiyev, R. Sharma, R. Toner, R. Zwaska, S. Cavanaugh, S. Childress, S. G. Wojcicki, S. Kopp, S. M. S. Kasahara, S. Mufson, S. Phan-Budd, S. R. Mishra, S. V. Cao, T. Kafka, T. Yang, W. A. Mann, W. H. Miller, W. P. Oliver, X. Huang, X. Qiu, Z. Isvan","submitted_at":"2011-07-29T20:49:01Z","abstract_excerpt":"We report the results of a search for $\\nu_{e}$ appearance in a $\\nu_{\\mu}$ beam in the MINOS long-baseline neutrino experiment. With an improved analysis and an increased exposure of $8.2\\times10^{20}$ protons on the NuMI target at Fermilab, we find that $2\\sin^2(\\theta_{23})\\sin^2(2\\theta_{13})<0.12\\ (0.20)$ at 90% confidence level for $\\delta\\mathord{=}0$ and the normal (inverted) neutrino mass hierarchy, with a best fit of $2\\sin^2(\\theta_{23})\\sin^2(2\\theta_{13})\\,\\mathord{=}\\,0.041^{+0.047}_{-0.031}\\ (0.079^{+0.071}_{-0.053})$. 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Blake, A. Habig, A. Himmel, A. Holin, A. Kreymer, A. M. McGowan, A. Schreckenberger, A. Sousa, A. Weber, B. Rebel, B. Viren, C. Backhouse, C. D. Moore, C. James, C. O. Escobar, C. Rosenfeld, C. White, D. Bogert, D. Cherdack, D. Cronin-Hennessy, D. E. Jaffe, D. G. Michael, D. J. Auty, D. J. Boehnlein, D. Jensen, D. Naples, D. S. Ayres, D. Torretta, E. Falk, G. Barr, G. F. Pearce, G. J. Bock, G. J. Feldman, G. Koizumi, G. Lefeuvre, G. M. Irwin, G. Pawloski, G. Tzanakos, H. A. Rubin, H. B. Newman, H. R. Gallagher, I. Z. Danko, J. A. B. Coelho, J. A. Nowak, J. Hartnell, J. Hylen, J. J. Evans, J. J. Walding, J. K. de Jong, J. K. Nelson, J. Ling, J. Mitchell, J. Musser, J. Paley, J. P. Ochoa-Ricoux, J. Ratchford, J. R. Meier, J. Schneps, J. Thomas, J. Urheim, K. Grzelak, K. Lang, L. Corwin, L. Loiacono, L. Mualem, L. Whitehead, M. A. Thomson, M. Betancourt, M. Bishai, M. C. Goodman, M. C. Sanchez, M. D. Messier, M. Dorman, MINOS Collaboration: P. Adamson, M. Kordosky, M. L. Marshak, M. Mathis, M. Orchanian, M. V. Diwan, M. V. Frohne, N. E. Devenish, N. Graf, N. Mayer, N. Tagg, P. Gouffon, P. J. Litchfield, P. Lucas, P. Schreiner, P. Shanahan, P. Vahle, R. A. Gomes, R. B. Patterson, R. C. Webb, R. Gran, R. Hatcher, R. J. Nichol, R. K. Plunkett, R. L. Talaga, R. Mehdiyev, R. Sharma, R. Toner, R. Zwaska, S. Cavanaugh, S. Childress, S. G. Wojcicki, S. Kopp, S. M. S. Kasahara, S. Mufson, S. Phan-Budd, S. R. Mishra, S. V. Cao, T. Kafka, T. Yang, W. A. Mann, W. H. Miller, W. P. Oliver, X. Huang, X. Qiu, Z. Isvan","submitted_at":"2011-07-29T20:49:01Z","abstract_excerpt":"We report the results of a search for $\\nu_{e}$ appearance in a $\\nu_{\\mu}$ beam in the MINOS long-baseline neutrino experiment. 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