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Particle Physics Division


Institute of Research into the Fundamental Laws of the Universe
« The Particle Physics Division 
The origin of the reactor antineutrino anomalies revealed?
Jan 23, 2023
The origin of the reactor antineutrino anomalies revealed?
Reactor antineutrino anomalies are a decade-long puzzle in neutrino physics. They are manifested by deviations of the order of a few percent between measurements and predictions.
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Jan 12, 2023
The Stereo adventure has not been sterile
The final results of the Stereo experiment have just been published in the journal Nature. A record of precision is established for the spectrum of neutrinos emitted by the fission of 235U, measured between 9 and 11m distance from the ILL reactor core in Grenoble.
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The Stereo adventure has not been sterile
Mini-bangs in KATRIN to explore the big one!
Jul 02, 2022
Mini-bangs in KATRIN to explore the big one!
The analysis on data recorded in 2019, led by an IRFU physicist, on relic neutrinos improves on previous limits by two orders of magnitude.
The cosmic background neutrino is one of the predictions of the standard cosmological model, but it has never been directly observed. These so-called "relic neutrinos" could be captured on a radioactive nucleus like tritium.
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May 03, 2022
KATRIN steps up efforts in the search for the sterile neutrino
The KATRIN collaboration has just recently reported a new upper limit of 0.8 eV/c2 on the mass of neutrinos. The KATRIN spectrometer also has a strong potential to search for new, so-called "sterile" neutrinos, based on a fine analysis of the tritium beta decay spectrum.
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KATRIN steps up efforts in the search for the sterile neutrino
KATRIN experiment breaks new neutrino mass record at less than 0.8 eV
Feb 14, 2022
KATRIN experiment breaks new neutrino mass record at less than 0.8 eV
KATRIN has just crossed a symbolic threshold and reveals a new upper limit!
The KATRIN (KArlsruhe TRItium Neutrino Experiment) located at the Karlsruhe Institute of Technology (KIT) has just crossed a symbolic threshold. In a paper published in the prestigious journal Nature Physics, the collaboration reveals a new upper limit of 0.8 eV/c^2 for the mass of neutrinos.
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Jan 19, 2021
Three new results for the CUPID collaboration in the search for neutrinoless double beta decay!
The search for double beta decay without neutrino emission (0νββ) is one of the major challenges of contemporary physics, because its observation would make a clear statement about the nature of the neutrino itself and potentially on the origin of the matter/antimatter asymmetry of our universe.
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Three new results for the CUPID collaboration in the search for neutrinoless double beta decay!
KATRIN: a still unsterilized scale!
Dec 18, 2020
KATRIN: a still unsterilized scale!
The main objective of the KATRIN experiment is the measurement of the mass of the three neutrinos of the Standard Model of Particle Physics. But the analysis of the beta decay spectrum of tritium also allows to search for the trace of a hypothetical fourth neutrino, called sterile neutrino.
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Jun 28, 2020
A new world leading limit for 0νββ decay set by the CUPID-Mo experiment to determine the nature of the neutrino
In its standard form, double beta decay is a process in which a nucleus decays into a different nucleus and emits two electrons and two antineutrinos (2νββ). This nuclear transition is very rare, but it was detected in several nuclei with sophisticated experiments.
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A new world leading limit for 0νββ decay set by the CUPID-Mo experiment to determine the nature of the neutrino
First injection of tritium in the KATRIN experiment
Oct 10, 2018
First injection of tritium in the KATRIN experiment
What is the mass of neutrinos? To answer this fundamental question, the KATRIN experiment was designed and built by an international collaboration at the Karlsruhe Institute of Technology. On June 11, 2018, an international symposium marked the beginning of data acquisition.
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