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The RENO experiment has analyzed about 500 live days of data to observe an energy dependent disappearance of reactor $\overline{\nu}_e$ by comparison of their prompt signal spectra measured in two identical near and far detectors. In the…

High Energy Physics - Experiment · Physics 2016-06-01 RENO Collaboration

Recent measurements of reactor-produced antineutrino fluxes and energy spectra are inconsistent with models based on measured thermal fission beta spectra. In this paper, we examine the dependence of antineutrino production on fission…

Nuclear Theory · Physics 2018-05-09 B. R. Littlejohn , A. Conant , D. A. Dwyer , A. Erickson , I. Gustafson , K. Hermanek

We examine uncertainties in the analysis of the reactor neutrino anomaly, wherein it is suggested that only about 94% of the emitted antineutrino flux was detected in short baseline experiments. We find that the form of the corrections that…

Nuclear Theory · Physics 2014-05-28 A. C. Hayes , J. L. Friar , G. T. Garvey , G. Jungman , Guy Jonkmans

The energy resolution is crucial for the reactor neutrino experiments which aims to determine neutrino mass ordering by precise measurement of the reactor antineutrino energy spectrum. A non-negligible effect in the antineutrino energy…

Instrumentation and Detectors · Physics 2020-05-12 Lianghong Wei , Liang Zhan , Jun Cao , Wei Wang

The Reactor Experiment for Neutrino Oscillation (RENO) has been taking electron antineutrino ($\overline{\nu}_{e}$) data from the reactors in Yonggwang, Korea, using two identical detectors since August 2011. Using roughly 500 live days of…

We calculate the Inverse Beta Decay (IBD) antineutrino spectrum generated by nuclear reactors using the summation method to understand deviations from the smooth Huber-Mueller model due to the decay of individual fission products, showing…

Nuclear Theory · Physics 2018-07-25 A. A. Sonzogni , M. Nino , E. A. McCutchan

Flux is an important source of uncertainties for a reactor neutrino experiment. It is determined from thermal power measurements, reactor core simulation, and knowledge of neutrino spectra of fuel isotopes. Past reactor neutrino experiments…

High Energy Physics - Experiment · Physics 2015-05-27 Jun Cao

Recent reactor neutrino experiments observe an anomalous excess around 5 MeV in the prompt energy spectra of positrons following the inverse beta decay reaction. In this note we suggest that this 5 MeV anomaly was already present in a much…

High Energy Physics - Experiment · Physics 2018-07-10 V. Zacek , G. Zacek , P. Vogel , J. -L. Vuilleumier

Providing an early warning of a galactic supernova using neutrino signals is of importance in studying both supernova dynamics and neutrino physics. The Daya Bay reactor neutrino experiment, with a unique feature of multiple liquid…

Instrumentation and Detectors · Physics 2019-08-14 Hanyu Wei

In this document we will review the current status of reactor neutrino oscillation experiments and present their physics potentials for measuring the $\theta_{13}$ neutrino mixing angle. The neutrino mixing angle $\theta_{13}$ is currently…

High Energy Physics - Experiment · Physics 2012-03-02 C. Mariani

The SNO+ collaboration reports its first spectral analysis of long-baseline reactor antineutrino oscillation using 114 tonne-years of data. Fitting the neutrino oscillation probability to the observed energy spectrum yields constraints on…

High Energy Physics - Experiment · Physics 2025-01-14 SNO+ Collaboration , : , A. Allega , M. R. Anderson , S. Andringa , M. Askins , D. M. Asner , D. J. Auty , A. Bacon , J. Baker , F. Barão , N. Barros , R. Bayes , E. W. Beier , T. S. Bezerra , A. Bialek , S. D. Biller , E. Blucher , E. Caden , E. J. Callaghan , M. Chen , S. Cheng , B. Cleveland , D. Cookman , J. Corning , M. A. Cox , R. Dehghani , J. Deloye , M. M. Depatie , F. Di Lodovico , C. Dima , J. Dittmer , K. H. Dixon , M. S. Esmaeilian , E. Falk , N. Fatemighomi , R. Ford , A. Gaur , O. I. González-Reina , D. Gooding , C. Grant , J. Grove , S. Hall , A. L. Hallin , D. Hallman , W. J. Heintzelman , R. L. Helmer , C. Hewitt , V. Howard , B. Hreljac , J. Hu , P. Huang , R. Hunt-Stokes , S. M. A. Hussain , A. S. Inácio , C. J. Jillings , S. Kaluzienski , T. Kaptanoglu , H. Khan , J. Kladnik , J. R. Klein , L. L. Kormos , B. Krar , C. Kraus , C. B. Krauss , T. Kroupová , C. Lake , L. Lebanowski , C. Lefebvre , V. Lozza , M. Luo , A. Maio , S. Manecki , J. Maneira , R. D. Martin , N. McCauley , A. B. McDonald , C. Mills , G. Milton , A. Molina Colina , D. Morris , I. Morton-Blake , M. Mubasher , S. Naugle , L. J. Nolan , H. M. O'Keeffe , G. D. Orebi Gann , J. Page , K. Paleshi , W. Parker , J. Paton , S. J. M. Peeters , L. Pickard , B. Quenallata , P. Ravi , A. Reichold , S. Riccetto , J. Rose , R. Rosero , I. Semenec , J. Simms , P. Skensved , M. Smiley , J. Smith , R. Svoboda , B. Tam , J. Tseng , E. Vázquez-Jáuregui , J. G. C. Veinot , C. J. Virtue , M. Ward , J. J. Weigand , J. R. Wilson , J. D. Wilson , A. Wright , S. Yang , M. Yeh , Z. Ye , S. Yu , Y. Zhang , K. Zuber , A. Zummo

New \textit{ab initio} calculations of the isotopic reactor antineutrino fluxes are provided with exact numerical calculations of the lepton wave functions, assuming all the decay branches are allowed GT transitions. We illustrate that the…

High Energy Physics - Phenomenology · Physics 2021-01-13 Dong-Liang Fang , Yu-Feng Li , Di Zhang

The low energy part of the reactor neutrino spectra has not been experimentally measured. Its uncertainties limit the sensitivities in certain reactor neutrino experiments. The origin of these uncertainties are discussed, and the effects on…

High Energy Physics - Experiment · Physics 2009-09-25 Hau-Bin Li , Henry T. Wong

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

The Daya Bay experiment was designed to be the largest and the deepest underground among the many current-generation reactor antineutrino experiments. With functionally identical detectors deployed at multiple baselines, the experiment aims…

High Energy Physics - Experiment · Physics 2019-08-13 Xin Qian

This Letter reports the precise measurement of reactor antineutrino spectrum and flux based on the full data set of 4.7 million inverse-beta-decay (IBD) candidates collected at Daya Bay near detectors. Expressed in terms of the IBD yield…

Nuclear Experiment · Physics 2025-05-26 F. P. An , W. D. Bai , A. B. Balantekin , M. Bishai , S. Blyth , G. F. Cao , J. Cao , J. F. Chang , Y. Chang , H. S. Chen , H. Y. Chen , S. M. Chen , Y. Chen , Y. X. Chen , Z. Y. Chen , J. Cheng , J. Cheng , Y. -C. Cheng , Z. K. Cheng , J. J. Cherwinka , M. C. Chu , J. P. Cummings , O. Dalager , F. S. Deng , X. Y. Ding , Y. Y. Ding , M. V. Diwan , T. Dohnal , D. Dolzhikov , J. Dove , K. V. Dugas , H. Y. Duyang , D. A. Dwyer , J. P. Gallo , M. Gonchar , G. H. Gong , H. Gong , W. Q. Gu , J. Y. Guo , L. Guo , X. H. Guo , Y. H. Guo , Z. Guo , R. W. Hackenburg , Y. Han , S. Hans , M. He , K. M. Heeger , Y. K. Heng , Y. K. Hor , Y. B. Hsiung , B. Z. Hu , J. R. Hu , T. Hu , Z. J. Hu , H. X. Huang , J. H. Huang , X. T. Huang , Y. B. Huang , P. Huber , D. E. Jaffe , K. L. Jen , X. L. Ji , X. P. Ji , R. A. Johnson , D. Jones , L. Kang , S. H. Kette , S. Kohn , M. Kramer , T. J. Langford , J. Lee , J. H. C. Lee , R. T. Lei , R. Leitner , J. K. C. Leung , F. Li , H. L. Li , J. J. Li , Q. J. Li , R. H. Li , S. Li , S. Li , S. C. Li , W. D. Li , X. N. Li , X. Q. Li , Y. F. Li , Z. B. Li , H. Liang , C. J. Lin , G. L. Lin , S. Lin , J. J. Ling , J. M. Link , L. Littenberg , B. R. Littlejohn , J. C. Liu , J. L. Liu , J. X. Liu , C. Lu , H. Q. Lu , K. B. Luk , B. Z. Ma , X. B. Ma , X. Y. Ma , Y. Q. Ma , R. C. Mandujano , C. Marshall , K. T. McDonald , R. D. McKeown , Y. Meng , J. Napolitano , D. Naumov , E. Naumova , T. M. T. Nguyen , J. P. Ochoa-Ricoux , A. Olshevskiy , J. Park , S. Patton , J. C. Peng , C. S. J. Pun , F. Z. Qi , M. Qi , X. Qian , N. Raper , J. Ren , C. Morales Reveco , R. Rosero , B. Roskovec , X. C. Ruan , B. Russe , H. Steiner , J. L. Sun , T. Tmej , W. -H. Tse , C. E. Tull , Y. C. Tung , B. Viren , V. Vorobel , C. H. Wang , J. Wang , M. Wang , N. Y. Wang , R. G. Wang , W. Wang , X. Wang , Y. F. Wang , Z. Wang , Z. Wang , Z. M. Wang , H. Y. Wei , L. H. Wei , W. Wei , L. J. Wen , K. Whisnant , C. G. White , H. L. H. Wong , E. Worcester , D. R. Wu , Q. Wu , W. J. Wu , D. M. Xia , Z. Q. Xie , Z. Z. Xing , H. K. Xu , J. L. Xu , T. Xu , T. Xue , C. G. Yang , L. Yang , Y. Z. Yang , H. F. Yao , M. Ye , M. Yeh , B. L. Young , H. Z. Yu , Z. Y. Yu , B. B. Yue , V. Zavadskyi , S. Zeng , Y. Zeng , L. Zhan , C. Zhang , F. Y. Zhang , H. H. Zhang , J. L. Zhang , J. W. Zhang , Q. M. Zhang , S. Q. Zhang , X. T. Zhang , Y. M. Zhang , Y. X. Zhang , Y. Y. Zhang , Z. J. Zhang , Z. P. Zhang , Z. Y. Zhang , J. Zhao , R. Z. Zhao , L. Zhou , H. L. Zhuang , J. H. Zou

We present an evaluation of the background induced by $^{241}$Am-$^{13}$C neutron calibration sources in the Daya Bay reactor neutrino experiment. As a significant background for electron-antineutrino detection at 0.26$\pm$0.12 per detector…

Instrumentation and Detectors · Physics 2016-07-21 W. Q. Gu , G. F. Cao , X. H. Chen , X. P. Ji , G. S. Li , J. J. Ling , J. Liu , X. Qian , W. Wang

The experiment "Neutrino-4" started in 2014 on a model, then it was continued on a full-scale detector, and now, has provided the measurement result on dependence of the flux and spectrum of reactor antineutrinos on the distance of 6 - 12…

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