학술논문
An improved measurement of muon antineutrino disappearance in MINOS
Document Type
Working Paper
Author
Adamson, P.; Ayres, D. S.; Backhouse, C.; Barr, G.; Bishai, M.; Blake, A.; Bock, G. J.; Boehnlein, D. J.; Bogert, D.; Cao, S. V.; Childress, S.; Coelho, J. A. B.; Corwin, L.; Cronin-Hennessy, D.; Danko, I. Z.; de Jong, J. K.; Devenish, N. E.; Diwan, M. V.; Escobar, C. O.; Evans, J. J.; Falk, E.; Feldman, G. J.; Frohne, M. V.; Gallagher, H. R.; Gomes, R. A.; Goodman, M. C.; Gouffon, P.; Graf, N.; Gran, R.; Grzelak, K.; Habig, A.; Hartnell, J.; Hatcher, R.; Himmel, A.; Holin, A.; Huang, X.; Hylen, J.; Irwin, G. M.; Isvan, Z.; Jaffe, D. E.; James, C.; Jensen, D.; Kafka, T.; Kasahara, S. M. S.; Koizumi, G.; Kopp, S.; Kordosky, M.; Kreymer, A.; Lang, K.; Ling, J.; Litchfield, P. J.; Loiacono, L.; Lucas, P.; Mann, W. A.; Marshak, M. L.; Mathis, M.; Mayer, N.; Mehdiyev, R.; Meier, J. R.; Messier, M. D.; Michael, D. G.; Miller, W. H.; Mishra, S. R.; Mitchell, J.; Moore, C. D.; Mualem, L.; Mufson, S.; Musser, J.; Naples, D.; Nelson, J. K.; Newman, H. B.; Nichol, R. J.; Nowak, J. A.; Oliver, W. P.; Orchanian, M.; Pahlka, R. B.; Paley, J.; Patterson, R. B.; Pawloski, G.; Phan-Budd, S.; Plunkett, R. K.; Qiu, X.; Radovic, A.; Ratchford, J.; Rebel, B.; Rosenfeld, C.; Rubin, H. A.; Sanchez, M. C.; Schneps, J.; Schreckenberger, A.; Schreiner, P.; Sharma, R.; Sousa, A.; Strait, M.; Tagg, N.; Talaga, R. L.; Thomas, J.; Thomson, M. A.; Tinti, G.; Toner, R.; Torretta, D.; Tzanakos, G.; Urheim, J.; Vahle, P.; Viren, B.; Walding, J. J.; Weber, A.; Webb, R. C.; White, C.; Whitehead, L.; Wojcicki, S. G.; Zwaska, R.
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Abstract
We report an improved measurement of muon anti-neutrino disappearance over a distance of 735km using the MINOS detectors and the Fermilab Main Injector neutrino beam in a muon anti-neutrino enhanced configuration. From a total exposure of 2.95e20 protons on target, of which 42% have not been previously analyzed, we make the most precise measurement of the anti-neutrino "atmospheric" delta-m squared = 2.62 +0.31/-0.28 (stat.) +/- 0.09 (syst.) and constrain the anti-neutrino atmospheric mixing angle >0.75 (90%CL). These values are in agreement with those measured for muon neutrinos, removing the tension reported previously.
Comment: 5 pages, 4 figures. In submission to Phys.Rev.Lett
Comment: 5 pages, 4 figures. In submission to Phys.Rev.Lett