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Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 102: Niederenergie-Neutrinophysik III

T 102.4: Talk

Thursday, March 3, 2016, 17:35–17:50, VMP9 SR 07

The Reactor Antineutrino Anomalies — •Julia Haser, Christian Buck, and Manfred Lindner — Max-Planck-Institut für Kernphysik, Heidelberg

Major discoveries were made in the past few years in the field of neutrino flavour oscillation. Nuclear reactors produce a clean and intense flux of electron antineutrinos and are thus an essential neutrino source for the determination of oscillation parameters. Most currently the reactor antineutrino experiments Double Chooz, Daya Bay and RENO have accomplished to measure θ13, the smallest of the three-flavour mixing angles. In the course of these experiments two anomalies emerged: 1) the reanalysis of the reactor predictions revealed a deficit in experimentally observed antineutrino flux, known as the “reactor antineutrino anomaly”. 2) The high precision of the latest generation of neutrino experiments resolved a spectral shape distortion relative to the expected energy spectra. Both puzzles are yet to be solved and triggered new experimental as well as theoretical studies, with the search for light sterile neutrinos as most popular explanation for the flux anomaly.
This talk will outline the two reactor antineutrino anomalies. Discussing possible explanations for their occurrence, recent and upcoming efforts to solve the reactor puzzles will be highlighted.

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