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      Impact of Modular Total Absorption Spectrometer measurements of \(\beta \) decay of fission products on the decay heat and reactor \({\overline{\nu }}_{e}\) flux calculation

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          ENDF/B-VII.1 Nuclear Data for Science and Technology: Cross Sections, Covariances, Fission Product Yields and Decay Data

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            Observation of electron-antineutrino disappearance at Daya Bay

            The Daya Bay Reactor Neutrino Experiment has measured a non-zero value for the neutrino mixing angle \(\theta_{13}\) with a significance of 5.2 standard deviations. Antineutrinos from six 2.9 GW\(_{\rm th}\) reactors were detected in six antineutrino detectors deployed in two near (flux-weighted baseline 470 m and 576 m) and one far (1648 m) underground experimental halls. With a 43,000 ton-GW_{\rm th}-day livetime exposure in 55 days, 10416 (80376) electron antineutrino candidates were detected at the far hall (near halls). The ratio of the observed to expected number of antineutrinos at the far hall is \(R=0.940\pm 0.011({\rm stat}) \pm 0.004({\rm syst})\). A rate-only analysis finds \(\sin^22\theta_{13}=0.092\pm 0.016({\rm stat})\pm0.005({\rm syst})\) in a three-neutrino framework.
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              The Reactor Antineutrino Anomaly

              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 of published experiments at reactor-detector distances 1.5 eV^2 (95%) and sin^2(2\theta_{new})=0.14(0.08) (95%). Constraints on the theta13 neutrino mixing angle are revised.
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                Author and article information

                Journal
                PRLTAO
                Physical Review Letters
                Phys. Rev. Lett.
                American Physical Society (APS)
                0031-9007
                1079-7114
                August 2017
                August 2 2017
                : 119
                : 5
                Article
                10.1103/PhysRevLett.119.052503
                ed271ea0-60a6-4f7c-a614-34a3006badfc
                © 2017

                http://link.aps.org/licenses/aps-default-license

                http://link.aps.org/licenses/aps-default-accepted-manuscript-license

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