Low-energy reactor neutrino physics with the CONNIE experiment

1 Sep 2021, 17:10
50m
Talk in parallel session Neutrino physics and astrophysics Discussion Panel Neutrinos 6

Speaker

Irina Nasteva (Federal University of Rio de Janeiro (BR))

Description

The Coherent Neutrino-Nucleus Interaction Experiment (CONNIE) uses fully depleted high-resistivity CCDs (charge coupled devices) with the aim of detecting the coherent elastic scattering of reactor antineutrinos with silicon nuclei and probing physics beyond the Standard Model. CONNIE is located at a distance of about 30 m from the core of the 3.8 GW Angra-2 nuclear reactor in Rio de Janeiro, Brazil. The experiment has been taking data since 2016 with a noise level of less than 2 electrons RMS and an active mass of 50 g. The analysis of the 2016-2018 data allowed us to set a 95% C.L. upper limit on the coherent scattering rate, which was used to place stringent constraints on simplified extensions of the Standard Model with light mediators. Currently, the experiment is operating with an improved readout and a lower energy threshold of 50 eV. We present the performance of the CONNIE experiment and new results of the blind analysis of 2019 data. We also report on the ongoing upgrade and the prospects for detecting the coherent elastic scattering of reactor neutrinos with the new detector technology of skipper CCDs.

Reference to paper (DOI or arXiv) in preparation

Primary author

Irina Nasteva (Federal University of Rio de Janeiro (BR))

Presentation Materials

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