| Autor: |
Adamson, P. Andreopoulos, C. Auty, D. J. Ayres, D. S. and Backhouse, C. Barr, G. Bishai, M. Blake, A. Bock, G. J. and Boehnlein, D. J. Bogert, D. Cavanaugh, S. Cherdack, D. and Childress, S. Choudhary, B. C. Coelho, J. A. B. Coleman, S. J. Corwin, L. Cronin-Hennessy, D. Danko, I. Z. de Jong, J. K. Devenish, N. E. Diwan, M. V. Dorman, M. and Escobar, C. O. Evans, J. J. Falk, E. Feldman, G. J. and Frohne, M. V. Gallagher, H. R. Gomes, R. A. Goodman, M. C. and Gouffon, P. Graf, N. Gran, R. Grant, N. Grzelak, K. and Habig, A. Harris, D. Hartnell, J. Hatcher, R. and Himmel, A. Holin, A. Howcroft, C. Huang, X. Hylen, J. and Ilic, J. Irwin, G. M. Isvan, Z. Jaffe, D. E. James, C. Jensen, D. Kafka, T. Kasahara, S. M. S. Koizumi, G. and Kopp, S. Kordosky, M. Kreymer, A. Lang, K. Lefeuvre, G. Ling, J. Litchfield, P. J. Loiacono, L. Lucas, P. and Mann, W. A. Marshak, M. L. Mayer, N. McGowan, A. M. and Mehdiyev, R. Meier, J. R. Messier, M. D. Miller, W. H. and Mishra, S. R. Mitchell, J. Moore, C. D. Morfin, J. and Mualem, L. Mufson, S. Musser, J. Naples, D. Nelson, J. K. Newman, H. B. Nichol, R. J. Nicholls, T. C. Nowak, J. A. Ochoa-Ricoux, J. P. Oliver, W. P. Orchanian, M. and Ospanov, R. Paley, J. Patterson, R. B. Pawloski, G. and Pearce, G. F. Petyt, D. A. Phan-Budd, S. Plunkett, R. K. and Qiu, X. Ratchford, J. Raufer, T. M. Rebel, B. Rodrigues, P. A. Rosenfeld, C. Rubin, H. A. Sanchez, M. C. Schneps, J. Schreiner, P. Shanahan, P. Sousa, A. Stamoulis, P. and Strait, M. Tagg, N. Talaga, R. L. Tetteh-Lartey, E. and Thomas, J. Thomson, M. A. Tinti, G. Toner, R. Tzanakos, G. Urheim, J. Vahle, P. Viren, B. Weber, A. Webb, R. C. White, C. Whitehead, L. Wojcicki, S. G. Yang, T. and Zwaska, R. MINOS Collaboration |
| Jazyk: |
angličtina |
| Rok vydání: |
2011 |
| Předmět: |
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| Popis: |
This Letter reports the first direct observation of muon antineutrino disappearance. The MINOS experiment has taken data with an accelerator beam optimized for (nu) over bar (mu) production, accumulating an exposure of 1.71 x 10(20) protons on target. In the Far Detector, 97 charged current (nu) over bar (mu) events are observed. The no-oscillation hypothesis predicts 156 events and is excluded at 6.3 sigma. The best fit to oscillation yields vertical bar Delta(m) over bar (2)vertical bar = [3.36(-0.40)(+0.46)(stat) +/- 0.06(sys)] x 10(-3) eV(2), sin(2)(2 (theta) over bar) = 0.86(-0.12)(+0.11)(stat) +/- 0.01(syst). The MINOS nu(mu) and (nu) over bar (mu) measurements are consistent at the 2.0% confidence level, assuming identical underlying oscillation parameters. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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