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Search for a sterile neutrino with the STEREO detector at ILL

Abstract : In 2011, a re-evaluation of the antineutrino spectrum emitted by nuclear reactors revealed a 6% deficit between the observed flux and the expected one. This anomaly is significant at 2.9$\sigma$ and can be explained by a new oscillation at short range due to a light sterile neutrino, with parameter $\Delta m^2=\mathcal{O}(\text{eV})$. The STEREO detector in construction at ILL will be the first ever to measure with precision its antineutrino spectrum and flux at very short distance (9-11m) and it will be able to confirm or reject the existence of this light sterile neutrino. In the following we introduce the relevant parameter to study the neutrino oscillation, then the STEREO detector and its discovery potential.
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http://hal.in2p3.fr/in2p3-01131793
Contributor : Emmanuelle Vernay <>
Submitted on : Monday, March 16, 2015 - 10:05:05 AM
Last modification on : Thursday, November 19, 2020 - 12:59:05 PM

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  • HAL Id : in2p3-01131793, version 1
  • ARXIV : 1602.00568

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S. Zsoldos. Search for a sterile neutrino with the STEREO detector at ILL. 50th Rencontres de Moriond - Electroweak Interactions and Unified Theories, Mar 2015, La Thuile, Italy. pp.523-534. ⟨in2p3-01131793⟩

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