Probing Physics Beyond the Neutrino Mass at the KATRIN Experiment

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A90056%2F25%3A00639387" target="_blank" >RIV/61389005:90056/25:00639387 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.22323/1.476.0171" target="_blank" >http://dx.doi.org/10.22323/1.476.0171</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.22323/1.476.0171" target="_blank" >10.22323/1.476.0171</a>

Result language
angličtina
Original language name
Probing Physics Beyond the Neutrino Mass at the KATRIN Experiment
Original language description
Neutrinos present a number of unanswered questions and are a leading candidate for the potential hiding place of other new physics phenomena. Various of these hidden signatures of new physics can be explored with the KATRIN experiment. The principal objective of KATRIN is to quantify the neutrino mass through precision spectroscopy of tritium β-decay. Recently, KATRIN has improved the upper bound on the effective electron-neutrino mass to 0.45 eV at 90 % CL and is continuing to take data until end of 2025. Further, beyond the neutrino mass investigations involve the search for specific Lorentz invariance-violating parameters, that are only accessible via interaction processes such as the β-decay. Improved limits of the respective parameters have been obtained, solely based on the first measurement campaign. Additionally, the possible existence of an eV-scale sterile neutrino is being probed. Its existence is today predominantly motivated by the Gallium anomaly and KATRIN is engaged in investigating the associated parameter space. Furthermore, the β-spectrum is being scrutinised for general neutrino interactions, thus enabling a broad search for novel interactions. Here, we present first preliminary constraints based on the second measurement campaign.
Czech name
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Czech description
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Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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