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Related papers: The reactor antineutrino spectrum calculation

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The spectral shape of reactor antineutrinos measured in recent experiments shows anomalies in comparison to neutrino reference spectra. New precision measurements of the reactor neutrino spectra as well as more complete input in nuclear…

High Energy Physics - Experiment · Physics 2016-12-22 Christian Buck , Antoine P. Collin , Julia Haser , Manfred Lindner

Recently, three successful antineutrino experiments (Daya Bay, Double Chooz, and RENO) measured the neutrino mixing angle theta_{13}; however, significant discrepancies were found, both in the absolute flux and spectral shape. Much effort…

Instrumentation and Detectors · Physics 2018-10-17 X. B. Ma , J. Y. Liu , J. Y. Xu , F. Lu , Y. X. Chen

In this paper we study the effect of, well-known, higher order corrections to the allowed beta decay spectrum on the determination of anti-neutrino spectra resulting from the decays of fission fragments. In particular, we try to estimate…

High Energy Physics - Phenomenology · Physics 2015-03-19 Patrick Huber

Hints for the existence of a sterile neutrino at nuclear reactors are reexamined using two updated predictions for the fluxes of antineutrinos produced in fissions. These new predictions diverge in their preference for the rate deficit…

High Energy Physics - Phenomenology · Physics 2020-01-22 Jeffrey Berryman , Patrick Huber

The $\sim 3\sigma$ discrepancy between the predicted and observed reactor anti-neutrino flux, known as the reactor anti-neutrino anomaly, continues to intrigue. The recent discovery of an unexpected bump in the reactor anti-neutrino…

High Energy Physics - Phenomenology · Physics 2017-11-23 Mona Dentler , Álvaro Hernández-Cabezudo , Joachim Kopp , Michele Maltoni , Thomas Schwetz

An experiment was performed at the scientific neutron source FRM II in Garching to determine the cumulative antineutrino spectrum of the fission products of $^{238}$U. This was achieved by irradiating target foils of natural uranium with a…

Nuclear Experiment · Physics 2015-06-18 N. Haag , A. Gütlein , M. Hofmann , L. Oberauer , W. Potzel , K. Schreckenbach , F. M. Wagner

We identify a new, flux-dependent correction to the antineutrino spectrum as produced in nuclear reactors. The abundance of certain nuclides, whose decay chains produce antineutrinos above the threshold for inverse beta decay, has a…

High Energy Physics - Phenomenology · Physics 2016-03-30 Patrick Huber , Patrick Jaffke

The RENO experiment reports measured flux and energy spectrum of reactor electron antineutrinos\,($\overline{\nu}_e$) from the six reactors at Hanbit Nuclear Power Plant. The measurements use 966\,094\,(116\,111)\,$\overline{\nu}_e$…

Recently new reactor antineutrino spectra have been provided for 235U, 239Pu, 241Pu and 238U, increasing the mean flux by about 3 percent. To good approximation, this reevaluation applies to all reactor neutrino experiments. The synthesis…

High Energy Physics - Experiment · Physics 2011-05-12 G. Mention , M. Fechner , Th. Lasserre , Th. A. Mueller , D. Lhuillier , M. Cribier , A. Letourneau

Recently, three antineutrino experiments at Daya Bay, Double Chooz, and RENO measured the neutrino mixing angle $\theta_{13}$, each using a nuclear reactor power plant. However, significant discrepancies were found, both in the absolute…

High Energy Physics - Experiment · Physics 2018-11-21 Xubo Ma , Le Yang

A new summation method model of the reactor antineutrino energy spectrum is presented. It is updated with the most recent evaluated decay databases and with our Total Absorption Gamma-ray Spectroscopy measurements performed during the last…

We investigate the recent Daya Bay results on the changes in the antineutrino flux and spectrum with the burnup of the reactor fuel. We find that the discrepancy between current model predictions and the Daya Bay results can be traced to…

Nuclear Theory · Physics 2018-01-17 Anna Hayes , Gerard Jungman , Libby McCutchan , Alejandro Sonzogni , Gerry Garvey , Xiaobao Wang

Model-independent reactor isotopic cross sections per fission are determined by global fits of the reactor antineutrino data from High-Enriched Uranium (HEU) reactor rates, Low-Enriched Uranium (LEU) reactor rates, and reactor fuel…

Nuclear Theory · Physics 2022-04-27 Yu-Feng Li , Zhao Xin

Thermal fission energy is one of the basic parameters needed in the calculation of antineutrino flux for reactor neutrino experiments. It is useful to improve the precision of the thermal fission energy calculation for current and future…

Nuclear Experiment · Physics 2013-08-09 X. B. Ma , W. L. Zhong , L. Z. Wang , Y. X. Chen , J. Cao

Conceiving the possibility of using plastic scintillator bars as robust detectors for antineutrino detection for the remote reactor monitoring and nuclear safeguard application we study expected basic performance by Monte Carlo simulation.…

Instrumentation and Detectors · Physics 2016-10-20 A. Sh. Georgadze , V. M. Pavlovych , O. A. Ponkratenko , D. A. Litvinov

Reactor neutrinos play a substantial role in the study of the fundamental properties of neutrinos. With current and upcoming precision experiments, it is essential more than ever to understand the reactor neutrino flux and spectrum.…

Instrumentation and Detectors · Physics 2018-04-03 Bedrich Roskovec

With the goal of determining the $\theta_{13}$ neutrino oscillation mixing angle, the measurements of reactor antineutrino fluxes at the Double Chooz, RENO and Daya Bay experimental facilities have uncovered a systematic discrepancy between…

Nuclear Theory · Physics 2019-07-24 J. Petković , T. Marketin , G. Martínez-Pinedo , N. Paar

Reactor antineutrinos are used to study neutrino oscillation, search for signatures of non-standard neutrino interactions, and to monitor reactor operation for safeguard applications. The flux and energy spectrum of reactor antineutrinos…

High Energy Physics - Experiment · Physics 2013-05-01 K. M. Heeger , B. R. Littlejohn , H. P. Mumm , M. N. Tobin

Measurements of the decay energy released as a function of time following the thermal neutron induced fission on $^{235}$U and $^{239,241}$Pu were performed in the 1970s at Oak Ridge National Laboratory with the purpose of quantifying…

Nuclear Experiment · Physics 2023-06-05 A. A. Sonzogni , R. J. Lorek , A. Mattera , E. A. McCutchan

By performing global fits to inverse beta decay (IBD) yield measurements from existing neutrino experiments based at highly $^{235}$U enriched reactor cores and conventional low-enriched cores, we explore current direct bounds on neutrino…

High Energy Physics - Phenomenology · Physics 2023-06-07 Yoshi Fujikake , Bryce Littlejohn , Ohana B. Rodrigues , Pranava Teja Surukuchi