@article{8b2e7de59a16448c8276279068bcae34,
title = "Tritium Beta Spectrum Measurement and Neutrino Mass Limit from Cyclotron Radiation Emission Spectroscopy",
abstract = "The absolute scale of the neutrino mass plays a critical role in physics at every scale, from the subatomic to the cosmological. Measurements of the tritium end-point spectrum have provided the most precise direct limit on the neutrino mass scale. In this Letter, we present advances by Project 8 to the cyclotron radiation emission spectroscopy (CRES) technique culminating in the first frequency-based neutrino mass limit. With only a cm3-scale physical detection volume, a limit of mβ<155 eV/c2 (152 eV/c2) is extracted from the background-free measurement of the continuous tritium beta spectrum in a Bayesian (frequentist) analysis. Using Kr83m calibration data, a resolution of 1.66±0.19 eV (FWHM) is measured, the detector response model is validated, and the efficiency is characterized over the multi-keV tritium analysis window. These measurements establish the potential of CRES for a high-sensitivity next-generation direct neutrino mass experiment featuring low background and high resolution.",
author = "\{Project 8 Collaboration\} and \{Ashtari Esfahani\}, A. and S. B{\"o}ser and N. Buzinsky and Carmona-Benitez, \{M. C.\} and C. Claessens and \{De Viveiros\}, L. and Doe, \{P. J.\} and M. Fertl and Formaggio, \{J. A.\} and Gaison, \{J. K.\} and L. Gladstone and M. Grando and M. Guigue and J. Hartse and Heeger, \{K. M.\} and X. Huyan and J. Johnston and Jones, \{A. M.\} and K. Kazkaz and Laroque, \{B. H.\} and M. Li and A. Lindman and E. MacHado and A. Marsteller and C. Matth{\'e} and R. Mohiuddin and B. Monreal and R. Mueller and Nikkel, \{J. A.\} and E. Novitski and Oblath, \{N. S.\} and Pe{\~n}a, \{J. I.\} and W. Pettus and R. Reimann and Robertson, \{R. G.H.\} and \{Rosa De Jes{\'u}s\}, D. and G. Rybka and L. Salda{\~n}a and M. Schram and Slocum, \{P. L.\} and J. Stachurska and Sun, \{Y. H.\} and Surukuchi, \{P. T.\} and Tedeschi, \{J. R.\} and Telles, \{A. B.\} and F. Thomas and M. Thomas and Thorne, \{L. A.\} and T. Th{\"u}mmler and L. Tvrznikova",
note = "Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.",
year = "2023",
month = sep,
day = "8",
doi = "10.1103/PhysRevLett.131.102502",
language = "English (US)",
volume = "131",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "10",
}