Abstract
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 (L/E) 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 ofθ23; some of the last unknown parameters of the standard model extended to include neutrino mass.
Highlights
Neutrino oscillation experiments are normally categorized into short-baseline and long-baseline experiments
The dominant oscillation mode for all long-baseline accelerator experiments performed to date is νμ → ντ. This channel was used by K2K [5, 37] and MINOS [38] to provide essential confirmation of the neutrino oscillations observed by Super-Kamiokande in atmospheric neutrinos [11]
Neutral-current (NC) interaction cross-sections are identical for the three active flavors and so no change in the NC event rate would be observed as a function of L/E in the standard neutrino model
Summary
Neutrino oscillation experiments are normally categorized into short-baseline and long-baseline experiments. With the goal to discover electron neutrino appearance and determine θ13, the T2K experiment [4] in Japan started taking data in 2010 and the NOνA experiment [13,14,15] in the USA is under construction and will start measurements in 2013. The design of these experiments was optimized for detection of electron neutrino appearance Both T2K and NOνA adopted a novel “off-axis” beam technique that provides a narrow peak in the energy spectrum, tuned to be at the expected oscillation maximum, while at the same time reducing the unwanted high energy tail. The MINOS+ experiment [19] will focus on searches for new physics through highprecision, high-statistics measurements with the NuMI beam operating at a peak on-axis energy of 7 GeV.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
