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Advances in High Energy Physics
Volume 2013 (2013), Article ID 475749, 30 pages
Review Article

Long-Baseline Neutrino Oscillation Experiments

1Department of Physics, Harvard University, Cambridge, MA 02138, USA
2Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, UK
3Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan

Received 27 July 2012; Accepted 8 October 2012

Academic Editor: Koichiro Nishikawa

Copyright © 2013 G. J. Feldman et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A review of accelerator long-baseline neutrino oscillation experiments is provided, including all experiments performed to date and the projected sensitivity of those currently in progress. Accelerator experiments have played a crucial role in the confirmation of the neutrino oscillation phenomenon and in precision measurements of the parameters. With a fixed baseline and detectors providing good energy resolution, precise measurements of the ratio of distance/energy ( ) on the scale of individual events have been made and the expected oscillatory pattern resolved. Evidence for electron neutrino appearance has recently been obtained, opening a door for determining the CP violating phase as well as resolving the mass hierarchy and the octant of ; some of the last unknown parameters of the standard model extended to include neutrino mass.