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arXiv:1103.0340hep-ex

Measurement of the neutrino mass splitting and flavor mixing by MINOS

The MINOS Collaboration, P. Adamson, C. Andreopoulos, R. Armstrong, D. J. Auty, D. S. Ayres, C. Backhouse, G. Barr, M. Bishai, A. Blake, G. J. Bock, D. J. Boehnlein, D. Bogert, S. Cavanaugh, D. Cherdack, S. Childress, B. C. Choudhary, J. A. B. Coelho, S. J. Coleman, L. Corwin, D. Cronin-Hennessy, I. Z. Danko, J. K. de Jong, N. E. Devenish, M. V. Diwan, M. Dorman, C. O. Escobar, J. J. Evans, E. Falk, G. J. Feldman, M. V. Frohne, H. R. Gallagher, R. A. Gomes, M. C. Goodman, P. Gouffon, N. Graf, R. Gran, N. Grant, K. Grzelak, A. Habig, D. Harris, J. Hartnell, R. Hatcher, A. Himmel, A. Holin, X. Huang, J. Hylen, J. Ilic, G. M. Irwin, Z. Isvan, D. E. Jaffe, C. James, D. Jensen, T. Kafka, S. M. S. Kasahara, G. Koizumi, S. Kopp, M. Kordosky, A. Kreymer, K. Lang, G. Lefeuvre, J. Ling, P. J. Litchfield, R. P. Litchfield, L. Loiacono, P. Lucas, W. A. Mann, M. L. Marshak, N. Mayer, A. M. McGowan, R. Mehdiyev, J. R. Meier, M. D. Messier, D. G. Michael, W. H. Miller, S. R. Mishra, J. Mitchell, C. D. Moore, J. Morfín, L. Mualem, S. Mufson, J. Musser, D. Naples, J. K. Nelson, H. B. Newman, R. J. Nichol, J. A. Nowak, W. P. Oliver, M. Orchanian, R. Ospanov, J. Paley, R. B. Patterson, G. Pawloski, G. F. Pearce, D. A. Petyt, S. Phan-Budd, R. K. Plunkett, X. Qiu, J. Ratchford, T. M. Raufer, B. Rebel, P. A. Rodrigues, C. Rosenfeld, H. A. Rubin, M. C. Sanchez, J. Schneps, P. Schreiner, P. Shanahan, C. Smith, A. Sousa, P. Stamoulis, M. Strait, N. Tagg, R. L. Talaga, J. Thomas, M. A. Thomson, G. Tinti, R. Toner, G. Tzanakos, J. Urheim, P. Vahle, B. Viren, A. Weber, R. C. Webb, C. White, L. Whitehead, S. G. Wojcicki, T. Yang, R. Zwaska

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Abstract

Measurements of neutrino oscillations using the disappearance of muon neutrinos from the Fermilab NuMI neutrino beam as observed by the two MINOS detectors are reported. New analysis methods have been applied to an enlarged data sample from an exposure of $7.25 \times 10^{20}$ protons on target. A fit to neutrino oscillations yields values of $|Δm^2| = (2.32^{+0.12}_{-0.08})\times10^{-3}$\,eV$^2$ for the atmospheric mass splitting and $\rm \sin^2\!(2θ) > 0.90$ (90%\,C.L.) for the mixing angle. Pure neutrino decay and quantum decoherence hypotheses are excluded at 7 and 9 standard deviations, respectively.

arXiv comments
5 pages, 4 figures
Journal reference
Phys.Rev.Lett.106:181801,2011
DOI
doi:10.1103/PhysRevLett.106.181801
Subjects
hep-exHigh Energy Physics, Experiment

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    • The data-rate would be far below 1 bps. The event-rate in SuperK [1] from the Sun was ~0.1/day/kiloton of water. Signalling to submarines would require a Fermilab or T2K-caliber accelerator with an ability to direct a beam, with a properly-oriented pion-decay hall, generally in…

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