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Title: Diagnosing the reactor antineutrino anomaly with global antineutrino flux data

Abstract

We have examined the impact of new Daya Bay, Double Chooz, and RENO measurements on global fits of reactor antineutrino flux data to a variety of hypotheses regarding the origin of the reactor antineutrino anomaly. In comparing RENO and Daya Bay measurements of inverse beta decay (IBD) yield versus 239Pu fission fraction, we find differing levels of precision in measurements of time-integrated yield and yield slope, but similar central values, leading to modestly enhanced isotopic IBD yield measurements in a joint fit of the two datasets. In the absence of sterile neutrino oscillations, global fits to all measurements now provide 3σ preference for incorrect modeling of specific fission isotopes over common mis-modeling of all beta-converted isotopes. If sterile neutrino oscillations are considered, global IBD yield fits provide no substantial preference between oscillation-including and oscillation-excluding hypotheses: hybrid models containing both sterile neutrino oscillations and incorrect 235U or 239Pu flux predictions are favored at only 1σ-2σ with respect to models where 235U, 238U, and 239Pu are assumed to be incorrectly predicted.

Authors:
; ; ;
Publication Date:
Research Org.:
Illinois Institute of Technology, Chicago, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1507191
Alternate Identifier(s):
OSTI ID: 1595060
Grant/Contract Number:  
SC0008347; XDA 10010100; 11835013
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 99 Journal Issue: 7; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Giunti, C., Li, Y. F., Littlejohn, B. R., and Surukuchi, P. T. Diagnosing the reactor antineutrino anomaly with global antineutrino flux data. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.99.073005.
Giunti, C., Li, Y. F., Littlejohn, B. R., & Surukuchi, P. T. Diagnosing the reactor antineutrino anomaly with global antineutrino flux data. United States. doi:10.1103/PhysRevD.99.073005.
Giunti, C., Li, Y. F., Littlejohn, B. R., and Surukuchi, P. T. Mon . "Diagnosing the reactor antineutrino anomaly with global antineutrino flux data". United States. doi:10.1103/PhysRevD.99.073005.
@article{osti_1507191,
title = {Diagnosing the reactor antineutrino anomaly with global antineutrino flux data},
author = {Giunti, C. and Li, Y. F. and Littlejohn, B. R. and Surukuchi, P. T.},
abstractNote = {We have examined the impact of new Daya Bay, Double Chooz, and RENO measurements on global fits of reactor antineutrino flux data to a variety of hypotheses regarding the origin of the reactor antineutrino anomaly. In comparing RENO and Daya Bay measurements of inverse beta decay (IBD) yield versus 239Pu fission fraction, we find differing levels of precision in measurements of time-integrated yield and yield slope, but similar central values, leading to modestly enhanced isotopic IBD yield measurements in a joint fit of the two datasets. In the absence of sterile neutrino oscillations, global fits to all measurements now provide 3σ preference for incorrect modeling of specific fission isotopes over common mis-modeling of all beta-converted isotopes. If sterile neutrino oscillations are considered, global IBD yield fits provide no substantial preference between oscillation-including and oscillation-excluding hypotheses: hybrid models containing both sterile neutrino oscillations and incorrect 235U or 239Pu flux predictions are favored at only 1σ-2σ with respect to models where 235U, 238U, and 239Pu are assumed to be incorrectly predicted.},
doi = {10.1103/PhysRevD.99.073005},
journal = {Physical Review D},
issn = {2470-0010},
number = 7,
volume = 99,
place = {United States},
year = {2019},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevD.99.073005

Citation Metrics:
Cited by: 6 works
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    Works referencing / citing this record:

    Measurement of the Antineutrino Spectrum from U 235 Fission at HFIR with PROSPECT
    journal, June 2019


    Measurement of the Antineutrino Spectrum from U 235 Fission at HFIR with PROSPECT
    journal, June 2019