scholarly journals The first results of K2K long-baseline neutrino oscillation experiment

2000 ◽  
Author(s):  
Taku Ishida
Keyword(s):  
Neutrino Oscillation ◽  
Long Baseline ◽  
Neutrino Oscillation Experiment ◽  
First Results ◽  
Oscillation Experiment

RECENT RESULTS FROM K2K

2002 ◽  
Vol 17 (24) ◽  
pp. 3364-3377 ◽  
Author(s):  
◽  
C. K. JUNG
Keyword(s):  
Neutrino Oscillation ◽  
Atmospheric Neutrino ◽  
Neutrino Beam ◽  
Statistical Fluctuation ◽  
Atmospheric Neutrinos ◽  
Long Baseline ◽  
Neutrino Oscillation Experiment ◽  
Oscillation Analysis ◽  
The Us ◽  
Oscillation Experiment

K2K is a long baseline neutrino oscillation experiment using a neutrino beam produced at the KEK 12 GeV PS, a near detector complex at KEK and a far detector (Super-Kamiokande) in Kamioka, Japan. The experiment was constructed and is being operated by an international consortium of institutions from Japan, Korea, and the US. The experiment started taking data in 1999 and has successfully taken data for about two years. K2K is the first long beseline neutrino oscillation experiment with a baseline of order hundreds of km and is the first accelerator based neutrino oscillation experiment that is sensitive to the Super-Kamiokande allowed region obtained from the atmospheric neutrino oscillation analysis. A total of 44 events have been observed in the far detector during the period of June 1999 to April 2001 corresponding to 3.85 × 1019 protons on target. The observation is consistent with the neutrino oscillation expectations based on the oscillation parameters derived from the atmospheric neutrinos, and the probability that this is a statistical fluctuation of non-oscillation expectation of [Formula: see text] is less than 3%.

scholarly journals Latest Results from the T2K Neutrino Experiment

Universe ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 21
Author(s):  
Dean Karlen ◽  
on behalf of the TtwoK Collaboration
Keyword(s):  
Cp Violation ◽  
Neutrino Oscillation ◽  
Neutrino Mass ◽  
Electron Neutrino ◽  
Muon Neutrino ◽  
Neutrino Experiment ◽  
Long Baseline ◽  
Neutrino Oscillation Experiment ◽  
Electron Neutrino Appearance ◽  
Oscillation Experiment

The T2K long baseline neutrino oscillation experiment measures muon neutrino disappearance and electron neutrino appearance in accelerator-produced neutrino and anti-neutrino beams. This presentation reports on the analysis of our data from an exposure of 2 . 6 × 10 21 protons on target. Results for oscillation parameters, including the CP violation parameter and neutrino mass ordering, are shown.

scholarly journals OPERA HIGHLIGHTS

2013 ◽  
Vol 53 (A) ◽  
pp. 512-517 ◽  
Author(s):  
Thomas Strauss
Keyword(s):  
Neutrino Oscillation ◽  
Rare Decay ◽  
Velocity Measurements ◽  
Long Baseline ◽  
Neutrino Oscillation Experiment ◽  
Oscillation Experiment

The OPERA experiment is a long baseline neutrino oscillation  experiment aimed at observing the ν<sub>μ</sub> → ν<sub>τ</sub> neutrino oscillation in the CERN neutrino to Gran Sasso beamline in the appearance mode by detecting the τ-decay. Here I will summarize the results from the run years 2008–10 with an update on observed rare decay topologies and the results of the neutrino velocity measurements.

NEW RESULTS FROM THE K2K EXPERIMENT

2005 ◽  
Vol 20 (14) ◽  
pp. 3055-3058
Author(s):  
◽  
RICHARD GRAN
Keyword(s):  
Energy Spectrum ◽  
Neutrino Oscillation ◽  
Neutrino Energy ◽  
Long Baseline ◽  
Neutrino Oscillation Experiment ◽  
Total Data ◽  
Oscillation Experiment

The K2K long-baseline neutrino oscillation experiment has analyzed all data including the period ending in February 2004. The total data sample is from 8.9 × 1019 protons on target. We observe 108 events at the far detector, Super-Kamiokande, when 150.9 + 11.6 - 10.0 were expected. Further, we observe a distortion of the neutrino energy spectrum which is consistent with νμ to ντ oscillation. The probability that we would observe these results if there is no neutrino oscillation is 0.011%, a 3.9 σ significance.

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