doi: 10.1103/PhysRevLett.108.191801. Epub 2012 May 11.
Improved measurement of muon antineutrino disappearance in MINOS
P Adamson 1, D S Ayres, C Backhouse, G Barr, M Bishai, A Blake, G J Bock, D J Boehnlein, D Bogert, S V Cao, S Childress, J A B Coelho, L Corwin, D Cronin-Hennessy, I Z Danko, J K de Jong, N E Devenish, M V Diwan, 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, J Ling, P J Litchfield, L Loiacono, P Lucas, W A Mann, M L Marshak, M Mathis, N Mayer, 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, W P Oliver, M Orchanian, R B Pahlka, J Paley, R B Patterson, G Pawloski, S Phan-Budd, R K Plunkett, X Qiu, A Radovic, J Ratchford, B Rebel, C Rosenfeld, H A Rubin, M C Sanchez, J Schneps, A Schreckenberger, P Schreiner, R Sharma, A Sousa, M Strait, N Tagg, R L Talaga, J Thomas, M A Thomson, G Tinti, 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, R Zwaska; MINOS Collaboration
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- DOI: 10.1103/PhysRevLett.108.191801
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Improved measurement of muon antineutrino disappearance in MINOS
P Adamson et al. Phys Rev Lett..
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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 2.95×10(20) protons on target, of which 42% have not been previously analyzed, we make the most precise measurement of Δm2=[2.62(-0.28)(+0.31)(stat)±0.09(syst)]×10(-3) eV2 and constrain the ν(μ) mixing angle sin2(2θ)>0.75 (90% C.L.). These values are in agreement with Δm2 and sin2(2θ) measured for ν(μ), removing the tension reported in [P. Adamson et al. (MINOS), Phys. Rev. Lett. 107, 021801 (2011).].
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