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Related Experiment Video

Updated: Oct 24, 2025

Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

OPERA tau neutrino charged current interactions.

N Agafonova¹, A Alexandrov², A Anokhina³

¹INR - Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia.

Scientific Data

|August 13, 2021

Summary

This summary is machine-generated.

The OPERA experiment confirmed neutrino oscillations by detecting tau neutrinos (vτ) in a muon neutrino (vμ) beam. This discovery, observed through ten candidate interactions, validates fundamental physics principles.

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Area of Science:

Particle Physics
Neutrino Physics
Astroparticle Physics

Background:

Neutrino oscillations, the transformation of one neutrino flavor into another, are a key phenomenon in particle physics.
The OPERA experiment aimed to provide direct evidence for muon neutrino (vμ) to tau neutrino (vτ) oscillations.
Detecting vτ is challenging due to their low interaction probability.

Purpose of the Study:

To discover the appearance of tau neutrinos (vτ) in a muon neutrino (vμ) beam.
To confirm neutrino oscillations through direct observation of vτ interactions.
To provide a detailed description of the vτ data sample for community use.

Main Methods:

Utilized the OPERA detector, a 1.25 kiloton nuclear emulsion/lead target complemented by electronic detectors.
Exposed the detector to the CERN Neutrinos to Gran Sasso (CNGS) beam from 2008 to 2012.
Analyzed data for tau neutrino charged-current (CC) interaction candidates.

Main Results:

Observed ten vτ CC interaction candidates.
Assessed the discovery of vμ→vτ oscillations with a statistical significance of 6.1 sigma.
Published the findings and the vτ data sample on the CERN Open Data Portal.

Conclusions:

The OPERA experiment successfully discovered vμ→vτ oscillations.
The results provide strong evidence for the phenomenon of neutrino oscillations.
The detailed data sample enhances accessibility for further scientific research.