scholarly journals Latest results of the OPERA experiment on nu-tau appearance in the CNGS neutrino beam

2019 ◽  
Author(s):  
N. Agafonova ◽  
A. Alexandrov ◽  
A. Anokhina ◽  
S. Aoki ◽  
A. Ariga ◽  
...  
Keyword(s):  
Neutrino Beam ◽  
Statistical Uncertainty ◽  
Multivariate Approach ◽  
Long Baseline ◽  
Baseline Experiment

OPERA is a long-baseline experiment designed to search for \nu_{\mu}\to\nu_{\tau}νμ→ντ oscillations in appearance mode. It was based at the INFN Gran Sasso laboratory (LNGS) and took data from 2008 to 2012 with the CNGS neutrino beam from CERN. After the discovery of \nu_\tauντ appearance in 2015, with 5.1\sigma5.1σ significance, the criteria to select \nu_\tauντ candidates have been extended and a multivariate approach has been used for events identification. In this way the statistical uncertainty in the measurement of the oscillation parameters and of \nu_\tauντ properties has been improved. Results are reported.

scholarly journals MONOENERGETIC NEUTRINO BEAM FOR LONG BASELINE EXPERIMENTS

2007 ◽  
Vol 16 (05) ◽  
pp. 1331-1347
Author(s):  
JOE SATO
Keyword(s):  
Electron Capture ◽  
Neutrino Beam ◽  
Capture Process ◽  
Long Baseline ◽  
Baseline Experiment

In an electron capture process by a nucleus, emitted neutrinos are monoenergetic. We study a long baseline experiment with such a completely monoenergetic neutrino beam. This talk is based on Refs. 1 and 2.

T2K: A LONG-BASELINE EXPERIMENT TO STUDY NEUTRINOS

2012 ◽  
Vol 27 (17) ◽  
pp. 1230017
Author(s):  
ALFONS WEBER
Keyword(s):  
Neutrino Oscillation ◽  
Beam Line ◽  
Neutrino Beam ◽  
Experimental Setup ◽  
Accelerator Complex ◽  
The West ◽  
Long Baseline ◽  
Future Potential ◽  
New Generation ◽  
Baseline Experiment

T2K is the first of a new generation of long baseline neutrino oscillation experiments that will measure neutrino oscillations parameters. The experiment uses the J-PARC accelerator complex on the east cost of Japan to sent a neutrino beam to the Kamioka mine, located 295 km to the west. It consists of a dedicated beam-line, a near detector complex to characterize the beam and the well-known Super-Kamiokande detector to measure the oscillation signal. This paper describes the experimental setup, the results of the first measurement campaign as well as giving an outlook on the future potential of the experiment.

scholarly journals A Beam from Protvino to the Mediterranean Sea

2019 ◽  
Vol 207 ◽  
pp. 04002
Author(s):  
V. Garkusha ◽  
S. Ivanov ◽  
A. Maksimov ◽  
F. Novoskoltsev ◽  
Y. Pimbursky ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Deep Water ◽  
Neutrino Beam ◽  
Proton Synchrotron ◽  
Preliminary Results ◽  
Long Baseline ◽  
The Mediterranean ◽  
Baseline Experiment

The report overviews preliminary results on the feasibility to produce a neutrino beam based on the U-70 proton synchrotron at Protvino for a very long baseline experiment with the deep water ORCA detector in the Mediterranean Sea.

scholarly journals A BRIEF REVIEW OF MINOS NEUTRINO OSCILLATION RESULTS

2010 ◽  
Vol 25 (15) ◽  
pp. 1219-1231 ◽  
Author(s):  
ALEC HABIG
Keyword(s):  
Neutral Current ◽  
Atmospheric Neutrino ◽  
Neutrino Beam ◽  
Atmospheric Neutrinos ◽  
Flavor Oscillations ◽  
Neutrino Sector ◽  
Long Baseline ◽  
Minos Detectors ◽  
Event Basis ◽  
Baseline Experiment

The MINOS long-baseline experiment is using the NuMI neutrino beam to make precise measurements of neutrino flavor oscillations in the "atmospheric" neutrino sector. MINOS observes the νμ disappearance oscillations seen in atmospheric neutrinos, tests possible disappearance to sterile ν by measuring the neutral current flux, and extends our reach towards the so far unseen θ13 by looking for νe appearance in this νμ beam. The magnetized MINOS detectors also allow tests of CPT conservation by discriminating between neutrinos and anti-neutrinos on an event-by-event basis. The intense, well-understood NuMI neutrino beam created at Fermilab is observed 735 km away at the Soudan Mine in Northeast Minnesota. High-statistics studies of the neutrino interactions themselves and the cosmic rays seen by the MINOS detectors have also been made. MINOS started taking beam data in May 2005 and is now nearing the end of its five-year run. This paper reviews results published based on the first several years of data.

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%.

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