Current Direct Neutrino Mass Experiments
By G. Drexlin, V. Hannen, S. Mertens, C. Weinheimer. 2013
273 citations recorded by the source corpus.
In this contribution, we review the status and perspectives of direct neutrino mass experiments, which investigate the kinematics of -decays of specific isotopes (3H, 187Re, 163Ho) to derive model-independent information on the averaged electron (anti)neutrino mass. After discussing the kinematics of -decay and the determination of the neutrino mass, we give a brief overview of past neutrino mass measurements (SN1987a-ToF studies, Mainz and Troitsk experiments for 3H, cryobolometers for 187Re). We then describe the Karlsruhe Tritium Neutrino (KATRIN) experiment currently under construction at Karlsruhe Institute of Technology, which will use the MAC-E-Filter principle to push the sensitivity down to a value of 200 meV (90% C.L.). To do so, many technological challenges have to be solved related to source intensity and stability, as well as precision energy analysis and low background rate close to the kinematic endpoint of tritium -decay at 18.6 keV. We then review new approaches such as the MARE, ECHO, and Project8 experiments, which offer the promise to perform an independent measurement of the neutrino mass in the sub-eV region. Altogether, the novel methods developed in direct neutrino mass experiments will provide vital information on the absolute mass scale of neutrinos.
Subfields: Nuclear and High Energy Physics, Radiation
View Paper: https://www.semanticscholar.org/paper/b3a96d02905077f8aea4e5dd39b4a62ab7835d5b
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Citations in the corpus
- Neutrino Mass from Cosmology (2012, methodology): “Beta decay experiments, which involve only the kinematics of electrons, are in principle the best strategy for measuring directly the neutrino mass [48].”
- A White Paper on keV sterile neutrino Dark Matter (2016, methodology): “The upcoming KATRIN Experiment, which is designed to probe the neutrinos mass with a sensitivity of 200 meV (90%CL) [129, 637] provides a ultra-luminous tritium source, allowing for a high statistics search for keV-scale sterile neutrinos.”
- Galileon gravity in light of ISW, CMB, BAO and H0 data (2017, methodology): “Currently, these efforts are limited to a sensitivity of ∑ mν < 6 eV [74], but future experiments are expected to improve this significantly.”
- Flavor structures of charged fermions and massive neutrinos (2019, background): “in the approximation Q − E mi [325, 326, 327], where the effective neutrino mass term 〈m〉e is simply defined as”