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. 2011 Oct 28;107(18):181802.
doi: 10.1103/PhysRevLett.107.181802. Epub 2011 Oct 27.

Improved search for Muon-neutrino to electron-neutrino oscillations in MINOS

P Adamson  1 , D J Auty, D S Ayres, C Backhouse, G Barr, M Betancourt, M Bishai, A Blake, G J Bock, D J Boehnlein, D Bogert, S V Cao, S Cavanaugh, D Cherdack, S Childress, J A B Coelho, 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, K Grzelak, A Habig, J Hartnell, R Hatcher, A Himmel, A Holin, X Huang, J Hylen, 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, L Loiacono, P Lucas, W A Mann, M L Marshak, M Mathis, 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, L Mualem, S Mufson, J Musser, D Naples, J K Nelson, H B Newman, R J Nichol, J A Nowak, J P Ochoa-Ricoux, W P Oliver, M Orchanian, J Paley, R B Patterson, G Pawloski, G F Pearce, S Phan-Budd, R K Plunkett, X Qiu, J Ratchford, B Rebel, C Rosenfeld, H A Rubin, M C Sanchez, J Schneps, A Schreckenberger, P Schreiner, P Shanahan, R Sharma, A Sousa, N Tagg, R L Talaga, J Thomas, M A Thomson, R Toner, D Torretta, G Tzanakos, J Urheim, P Vahle, B Viren, J J Walding, A Weber, R C Webb, C White, L Whitehead, S G Wojcicki, T Yang, R Zwaska; MINOS Collaboration
Affiliations

Improved search for Muon-neutrino to electron-neutrino oscillations in MINOS

P Adamson et al. Phys Rev Lett. .

Abstract

We report the results of a search for ν(e) appearance in a ν(μ) beam in the MINOS long-baseline neutrino experiment. With an improved analysis and an increased exposure of 8.2 × 10(20) protons on the NuMI target at Fermilab, we find that 2 sin(2) (θ(23))sin(2)(2θ(13))<0.12(0.20) at 90% confidence level for δ = 0 and the normal (inverted) neutrino mass hierarchy, with a best-fit of 2sin(2) (θ(23))sin(2)(2θ(13)) = 0.041(-0.031)(+0.047) (0.079(-0.053) (+0.071)). The θ(13) = 0 hypothesis is disfavored by the MINOS data at the 89% confidence level.

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