Search for a time-varying electron antineutrino signal at Daya Bay

(Daya Bay Collaboration)

Research output: Contribution to journalArticle

Abstract

A search for a time-varying νe signal was performed with 621 days of data acquired by the Daya Bay Reactor Neutrino Experiment over 704 calendar days. The time spectrum of the measured νe flux normalized to its prediction was analyzed with a Lomb-Scargle periodogram, which yielded no significant signal for periods ranging from 2 hours to nearly 2 years. The normalized time spectrum was also fit for a sidereal modulation under the Standard Model Extension (SME) framework to search for Lorentz and CPT violation (LV-CPTV). Limits were obtained for all six flavor pairs ēμ,ēτ, μτ, ēē,μμ and ττ by fitting them one at a time, constituting the first experimental constraints on the latter three. Daya Bay's high statistics and unique layout of multiple directions from three pairs of reactors to three experimental halls allowed the simultaneous constraint of individual SME LV-CPTV coefficients without assuming others contribute negligibly, a first for a neutrino experiment.

Original languageEnglish (US)
Article number092013
JournalPhysical Review D
Volume98
Issue number9
DOIs
StatePublished - Nov 1 2018

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antineutrinos
electrons
neutrinos
reactors
calendars
layouts
statistics
modulation
coefficients
predictions

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Search for a time-varying electron antineutrino signal at Daya Bay. / (Daya Bay Collaboration).

In: Physical Review D, Vol. 98, No. 9, 092013, 01.11.2018.

Research output: Contribution to journalArticle

(Daya Bay Collaboration). / Search for a time-varying electron antineutrino signal at Daya Bay. In: Physical Review D. 2018 ; Vol. 98, No. 9.
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abstract = "A search for a time-varying νe signal was performed with 621 days of data acquired by the Daya Bay Reactor Neutrino Experiment over 704 calendar days. The time spectrum of the measured νe flux normalized to its prediction was analyzed with a Lomb-Scargle periodogram, which yielded no significant signal for periods ranging from 2 hours to nearly 2 years. The normalized time spectrum was also fit for a sidereal modulation under the Standard Model Extension (SME) framework to search for Lorentz and CPT violation (LV-CPTV). Limits were obtained for all six flavor pairs ēμ,ēτ, μτ, ēē,μμ and ττ by fitting them one at a time, constituting the first experimental constraints on the latter three. Daya Bay's high statistics and unique layout of multiple directions from three pairs of reactors to three experimental halls allowed the simultaneous constraint of individual SME LV-CPTV coefficients without assuming others contribute negligibly, a first for a neutrino experiment.",
author = "{(Daya Bay Collaboration)} and D. Adey and An, {F. P.} and Balantekin, {A. B.} and Band, {H. R.} and M. Bishai and S. Blyth and D. Cao and Cao, {G. F.} and J. Cao and Chang, {J. F.} and Y. Chang and Chen, {H. S.} and Chen, {S. M.} and Y. Chen and Chen, {Y. X.} and J. Cheng and Cheng, {Z. K.} and Cherwinka, {J. J.} and Chu, {M. C.} and A. Chukanov and Cummings, {J. P.} and N. Dash and Deng, {F. S.} and Ding, {Y. Y.} and Diwan, {M. V.} and T. Dohnal and J. Dove and M. Dvoř{\'a}k and Dwyer, {D. A.} and M. Gonchar and Gong, {G. H.} and H. Gong and Gu, {W. Q.} and Guo, {J. Y.} and L. Guo and Guo, {X. H.} and Guo, {Y. H.} and Z. Guo and Hackenburg, {R. W.} and S. Hans and M. He and Heeger, {K. M.} and Heng, {Y. K.} and A. Higuera and Hsiung, {Y. B.} and Hu, {B. Z.} and Hu, {J. R.} and T. Hu and Hu, {Z. J.} and Huang, {H. X.}",
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AU - Gong, G. H.

AU - Gong, H.

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AU - Guo, J. Y.

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