Speaker
Description
Sterile neutrinos, postulated as neutral leptons with no standard weak interactions, can be searched for through their mixing with active neutrinos in kinematic neutrino-mass experiments. The KArlsruhe TRItium Neutrino (KATRIN) experiment carries out precision tritium $\beta$-decay spectroscopy close to the kinematic endpoint. While the primary goal is the neutrino-mass measurement with a target sensitivity of 0.3 eV/$c^2$ (90% C.L.), we use KATRIN's data to search for light sterile neutrinos in a parameter range complementary to short-baseline neutrino oscillation experiments.
This poster presents the analysis of the five KATRIN science runs, highlighting the experiment’s unique sensitivity to a fourth mass eigenstate $m_{4}$ up to 40 eV and active-to-sterile mixing amplitude of $|U_{e4}|^2 \leq 0.5 $. Ongoing enhancements in statistics, background reduction and systematic uncertainty control expand coverage over relevant short-baseline oscillation anomaly regions.
| Poster prize | Yes |
|---|---|
| Given name | Shailaja |
| Surname | Mohanty |
| First affiliation | IAP, Karlsruhe Institute of Technology |
| Institutional email | shailaja.mohanty@kit.edu |
| Gender | Female |
| Collaboration (if any) | KATRIN |
