Project KATRIN first result on the neutrino mass.

Oct 13, 2020, 12:10 PM


Plenary report Section 5. Neutrino physics and astrophysics. Plenary


Dr Nikita Titov (INR RAS)


For the KATRIN collaboration
The KArlsruhe TRItium Neutrino experiment (KATRIN) is designed to improve the existed direct limit on the effective electron antineutrino mass by an order of magnitude, with a projected sensitivity of 0.2 eV/c2 at the 90% confidence level. To achieve this KATRIN is using a windowless gaseous tritium source containing up to 100 GBq activity and electrostatic spectrometer with adiabatic magnetic collimation with resolution up to 1 eV. In spring 2019 first 521.7 hour long data taking run was performed. Data analysis provided new upper limit on the electron antineutrino effective mass 1.1 eV (90% confidence level), published at Phys. Rev. Lett. 123, 221802, November 2019. In 2020 Neutrino-4 experiment presented evidence of a sterile neutrino signal observation of with parameters sin22θ14≈0.35±0.07(5σ) and Δm214≈(7.3±0.7)eV2. KATRIN experiment is sensitive to sterile neutrino with these parameters. Last results from KATRIN project and common analysis with Neutrino-4 are presented.

Primary author

Dr Nikita Titov (INR RAS)

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