| Title: |
Cyclotron Radiation Emission Spectroscopy of Electrons from Tritium Beta Decay and $^{83\rm m}$Kr Internal Conversion |
| Authors: |
Project 8 Collaboration; Ashtari Esfahani, A.; Böser, S.; Buzinsky, N.; Carmona-Benitez, M. C.; Claessens, C.; de Viveiros, L.; Doe, P. J.; Fertl, M.; Formaggio, J. A.; Gaison, J. K.; Gladstone, L.; Guigue, M.; Hartse, J.; Heeger, K. M.; Huyan, X.; Jones, A. M.; Kazkaz, K.; LaRoque, B. H.; Li, M.; Lindman, A.; Machado, E.; Marsteller, A.; Matthé, C.; Mohiuddin, R.; Monreal, B.; Mueller, R.; Nikkel, J. A.; Novitski, E.; Oblath, N. S.; Peña, J. I.; Pettus, W.; Reimann, R.; Robertson, R. G. H.; De Jesús, D. Rosa; Rybka, G.; Saldaña, L.; Schram, M.; Slocum, P. L.; Stachurska, J.; Sun, Y.-H.; Surukuchi, P. T.; Tedeschi, J. R.; Telles, A. B.; Thomas, F.; Thomas, M.; Thorne, L. A.; Thümmler, T.; Tvrznikova, L.; Van De Pontseele, W.; VanDevender, B. A.; Weintroub, J.; Weiss, T. E.; Wendler, T.; Young, A.; Zayas, E.; Ziegler, A. |
| Publisher Information: |
arxiv |
| Publication Year: |
2025 |
| Collection: |
KITopen (Karlsruhe Institute of Technologie) |
| Subject Terms: |
Nuclear Experiment (nucl-ex); High Energy Physics - Experiment (hep-ex); ddc:530; Physics; info:eu-repo/classification/ddc/530 |
| Description: |
Project 8 has developed a novel technique, Cyclotron Radiation Emission Spectroscopy (CRES), for direct neutrino mass measurements. A CRES-based experiment on the beta spectrum of tritium has been carried out in a small-volume apparatus. We provide a detailed account of the experiment, focusing on systematic effects and analysis techniques. In a Bayesian (frequentist) analysis, we measure the tritium endpoint as $18553^{+18}_{-19}$ ($18548^{+19}_{-19}$) eV and set upper limits of 155 (152) eV (90% C.L.) on the neutrino mass. No background events are observed beyond the endpoint in 82 days of running. We also demonstrate an energy resolution of $1.66\pm0.19$ eV in a resolution-optimized magnetic trap configuration by measuring $^{83\rm m}$Kr 17.8-keV internal-conversion electrons. These measurements establish CRES as a low-background, high-resolution technique with the potential to advance neutrino mass sensitivity. |
| Document Type: |
book; report |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://publikationen.bibliothek.kit.edu/1000187510; https://publikationen.bibliothek.kit.edu/1000187510/169807332; https://doi.org/10.5445/IR/1000187510 |
| DOI: |
10.5445/IR/1000187510 |
| Availability: |
https://publikationen.bibliothek.kit.edu/1000187510; https://publikationen.bibliothek.kit.edu/1000187510/169807332; https://doi.org/10.5445/IR/1000187510 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/deed.de ; info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.FF5A2B56 |
| Database: |
BASE |