@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",
}