Bulletin of the American Physical Society
2021 Fall Meeting of the APS Division of Nuclear Physics
Volume 66, Number 8
Monday–Thursday, October 11–14, 2021; Virtual; Eastern Daylight Time
Session FK: Mini-Symposium: Neutrinos and Nuclei V: Astrophysical Neutrinos and Neutrino Mass II; Sterile and Reactor Neutrinos I
2:00 PM–3:48 PM,
Tuesday, October 12, 2021
Chair: Kate Scholberg, Duke University
Abstract: FK.00005 : Precise Measurement of Reactor Antineutrino Spectra from Joint Analyses of PROSPECT, STEREO, and Daya Bay*
2:48 PM–3:00 PM
Benjamin T Foust
Benjamin T Foust
PROSPECT, STEREO, Daya Bay
PROSPECT and STEREO have made modern measurements of antineutrinos at highly enriched uranium (HEU) research reactors where over 99% of the antineutrino flux comes from 235U, while the Daya Bay experiment has studied antineutrino emission at commercial power reactors which use a mixture of fissile isotopes.
Recently PROSPECT has performed joint analyses with Daya Bay and STEREO yielding the most precise determination of the measured 235U reactor antineutrino spectrum.
The work with STEREO directly combines the two pure 235U measurements and jointly unfolds the spectra to provide and improved result in antineutrino energy, independent of assumptions regarding other isotopes' contributions.
PROSPECT's combination with the high-statistics measurement from Daya Bay improves the deconvolution of the power reactor spectrum to obtain a more precise unfolded 235U antineutrino spectrum.
In this talk, I will present the results of both analyses.
*This work is supported by the US DOE Office of High Energy Physics, the Heising-Simons Foundation, CFREF and NSERC of Canada, and internal investments at all institutions.
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
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