Measurement of the neutrino mass splitting and flavor mixing by MINOS

Adamson, P. and Andreopoulos, C. and Armstrong, R. and Auty, D. J. and Ayres, D. S. and Backhouse, C. and Barr, G. and Bishai, M. and Blake, A. and Bock, G. J. and Boehnlein, D. J. and Bogert, D. and Cavanaugh, S. and Cherdack, D. and Childress, S. and Choudhary, B. C. and Coelho, J. A. B. and Coleman, S. J. and Corwin, L. and Cronin-hennessy, D. and Danko, I. Z. and De Jong, J. K. and Devenish, N. E. and Diwan, M. V. and Dorman, M. and Escobar, C. O. and Evans, J. J. and Falk, E. and Feldman, G. J. and Frohne, M. V. and Gallagher, H. R. and Gomes, R. A. and Goodman, M. C. and Gouffon, P. and Graf, N. and Gran, R. and Grant, N. and Grzelak, K. and Habig, A. and Harris, D. and Hartnell, J. and Hatcher, R. and Himmel, A. and Holin, A. and Huang, X. and Hylen, J. and Ilic, J. and Irwin, G. M. and Isvan, Z. and Nowak, J. A. (2011) Measurement of the neutrino mass splitting and flavor mixing by MINOS. Physical review letters, 106 (18). ISSN 0031-9007

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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 7.25×1020 protons on target. A fit to neutrino oscillations yields values of |Δm2|=(2.32-0.08+0.12)×10-3  eV2 for the atmospheric mass splitting and 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.

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Journal Article
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Physical review letters
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© 2011 American Physical Society
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25 Sep 2013 08:52
Last Modified:
18 Oct 2020 01:14