Tag Archive for 'Antineutrino'

Interior view of the KATRIN main spectrometer. Image credit: M. Zacher / KATRIN Collaboration.

KATRIN Physicists Measure Upper Mass Limit of Neutrino

Apr 11, 2025 by News Staff

Physicists with the KArlsruhe TRItium Neutrino (KATRIN) experiment report the most precise measurement of the upper mass limit of the neutrino to date,...

Illustration of the 70-m-long KATRIN beamline: the transport of β-electrons and magnetic adiabatic collimation of their momenta p are illustrated; (a-f) view into the tritium source depicts three systematic effects: molecular excitations during β-decay (a), scattering of electrons off the gas molecules (b) and spatial distribution of the electric potential in the source Usrc(r, z) (c); the view into the spectrometer illustrates the main background processes arising from radon decays inside the volume of the spectrometer (d), highly excited Rydberg atoms sputtered off from the structural material via α-decays of 210Po (e) and positive ions created in a Penning trap between the two spectrometers (f); low-energy electrons, created in the volume as a consequence of radon decays or Rydberg-atom ionizations, can be accelerated by qUana towards the focal-plane detector, making them indistinguishable from signal electrons. Image credit: KATRIN Collaboration, doi: 10.1038/s41567-021-01463-1.

KATRIN Experiment Sets New Limit on Neutrino Mass

Feb 15, 2022 by Enrico de Lazaro

Since the discovery of neutrino oscillations, physicists know that neutrinos have non-zero mass. However, the absolute neutrino-mass scale remains unknown....

A visualization of the Glashow resonance event detected by IceCube. Image credit: IceCube Collaboration.

High-Energy Antineutrino Detection Supports 60-Year-Old Theory

Mar 11, 2021 by News Staff

On December 6, 2016, a high-energy particle called an electron antineutrino hurtled to Earth from outer space at close to the speed of light carrying 6.3...

The interior of the Borexino detector. Image credit: Borexino Collaboration.

Borexino Detector Spots 53 Geoneutrinos

Jan 23, 2020 by Enrico de Lazaro

An underground particle detector called the Borexino detector has detected 53 antielectron neutrinos emanating from the Earth, so-called geoneutrinos. The...

NA62 experiment in CERN’s North Area. Image credit: NA62 / CERN.

CERN Physicists Observe Hints of Ultra-Rare Kaon Decay

Mar 27, 2018 by News Staff

Physicists from the NA62 Collaboration at CERN reported today that they had observed a candidate event of an extremely rare charged kaon decay (K+ →...