About
Precision measurements of the kinematics of weak decays offer a direct and nearly model independent approach to probe the absolute neutrino mass scale. The KArlsruhe TRItium Neutrino experiment (KATRIN) is searching for the minute imprint of the neutrino mass in the endpoint region of the tritium beta-decay spectrum. KATRIN employs a high-intensity gaseous molecular tritium source and a high-resolution electrostatic filter with magnetic adiabatic collimation to target a neutrino-mass sensitivity of 0.2eV/c2, thus improving on previous experiments by an order of magnitude, after five years of data-taking.
With just its first science run, KATRIN has improved previous direct neutrino mass bounds by about a factor of two, yielding a new upper limit of 1.1 eV/c2 (90% CL), and has begun to address further science channels such as the direct search for light sterile neutrinos. As larger data sets are collected and further improvements in terms of signal-to-background ratio and systematics are being achieved, KATRIN is progressing towards sub-eV neutrino mass sensitivity and the exploration of a number BSM physics cases based on the precision beta-decay spectrum.
EP Seminar: https://cern.zoom.us/j/65996824362?pwd=SUVDRWNseVMvOHVzRTNSMlplS1M3UT09.
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The talk
Credits and licence
- Institution
- CERN
- Department
- EP Seminar
- Speaker
- Kathrin Valerius
- Year
- 2021
- Language
- English
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed