Movatterモバイル変換

• Adamson, P.
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• Ayres, D. S.
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• Backhouse, C.
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• Barr, G.
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• Bishai, M.
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• Blake, A.
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• Bock, G. J.
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• Boehnlein, D. J.
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• Bogert, D.
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• Cao, S. V.
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• Childress, S.
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• Coelho, J. A. B.
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• Corwin, L.
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• Cronin-Hennessy, D.
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• Danko, I. Z.
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• de Jong, J. K.
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• Devenish, N. E.
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• Diwan, M. V.
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• Escobar, C. O.
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• Evans, J. J.
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• Falk, E.
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• Feldman, G. J.
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• Frohne, M. V.
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• Gallagher, H. R.
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• Gomes, R. A.
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• Goodman, M. C.
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• Gouffon, P.
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• Graf, N.
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• Gran, R.
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• Grzelak, K.
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• Habig, A.
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• Hartnell, J.
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• Hatcher, R.
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• Himmel, A.
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• Holin, A.
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• Huang, X.
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• Hylen, J.
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• Irwin, G. M.
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• Isvan, Z.
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• Jaffe, D. E.
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• James, C.
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• Jensen, D.
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• Kafka, T.
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• Kasahara, S. M. S.
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• Koizumi, G.
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• Kopp, S.
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• Kordosky, M.
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• Kreymer, A.
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• Lang, K.
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• Ling, J.
• and 62 more

Abstract

We report an improved measurement of ν¯_μ disappearance over a distance of 735 km using the MINOS detectors and the Fermilab Main Injector neutrino beam in a ν¯_μ-enhanced configuration. From a total exposure of 2.95×10²⁰ protons on target, of which 42% have not been previously analyzed, we make the most precise measurement of Δm¯²=[2.62_-0.28^+0.31(stat)±0.09(syst)]×10^-3eV² and constrain the ν¯_μ mixing angle sin⁡²(2θ¯)>0.75 (90% C.L.). These values are in agreement with Δm² and sin⁡²(2θ) measured for ν_μ, removing the tension reported in [P. Adamson (MINOS), Phys. Rev. Lett. 107, 021801 (2011).PRLTAO0031-900710.1103/PhysRevLett.107.021801].