# Observation of the last, weakest neutrino transformation at RENO

- Institution: CERN
- Department: EP Seminar
- Speaker: Soo-Bong Kim
- Year: 2012
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3002127)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

The RENO experiment has observed the disappearance of reactor electron antineutrinos, consistent with neutrino oscillations, with a significance of 4.9 standard deviations. Antineutrinos from six reactors at Yonggwang Nuclear Power Plant in Korea, are detected by two identical detectors located at 294 m and 1383 m, respectively, from the reactor array center. In the 229 day data-taking period of 11 August 2011 to 26 March 2012, the far (near) detector observed 17102 (154088) electron antineutrino candidate events with a background fraction of 5.5% (2.7%). A ratio of observed to expected number of antineutrinos in the far detector is 0.920+-0.009(stat.)+-0.014(syst.). From the deficit, we find sin^2(2theta_13)=0.113+-0.013(stat.)+-0.019(syst,) based on a rate-only analysis. In this talk, we will describe experimental setup, data taking, data analysis, and results for the measurement of theta_13..

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## Lectures

1. [Observation of the last, weakest neutrino transformation at RENO](https://invisiblenetwork.ai/learn/cern/3002127/9f8797112bfe), 1 h 16 min (CERN's player)