The quoted values are the ratios of the measured reactor ${{\overline{\mathit \nu}}_{{{e}}}}$ event rate at the quoted distances, and the rate expected without oscillations. The expected rate is based on the experimental data for the most significant reactor fuels (${}^{235}\mathrm {U}$, ${}^{239}\mathrm {Pu}$, ${}^{241}\mathrm {Pu}$) and on calculations for ${}^{238}\mathrm {U}$.

A recent re-evaluation of the spectral conversion of electron to ${{\overline{\mathit \nu}}_{{{e}}}}$ in MUELLER 2011 results in an upward shift of the reactor ${{\overline{\mathit \nu}}_{{{e}}}}$ spectrum by 3$\%$ and, thus, might require revisions to the ratios listed in this table.

VALUE DOCUMENT ID TECN  COMMENT • • We do not use the following data for averages, fits, limits, etc. • • $0.948$ $\pm0.008$ $\pm0.033$ 1 ALMAZAN 2020 RHF RHF reactor at ILL $0.952$ $\pm0.027$ 2 ADEY 2019 DAYA DayaBay, Ling Ao/Ao II reactors 3 AN 2016 DAYA DayaBay, Ling Ao/Ao II reactors $1.08$ $\pm0.21$ $\pm0.16$ 4 DENIZ 2010 TEXO Kuo-Sheng reactor, 28 m $0.658$ $\pm0.044$ $\pm0.047$ 5 ARAKI 2005 KLND Japanese react. $\sim{}$180 km $0.611$ $\pm0.085$ $\pm0.041$ 6 EGUCHI 2003 KLND Japanese react. $\sim{}$180 km $1.01$ $\pm0.024$ $\pm0.053$ 7 BOEHM 2001 Palo Verde react. $0.75 - 0.89$ km $1.01$ $\pm0.028$ $\pm0.027$ 8 APOLLONIO 1999 CHOZ Chooz reactors 1$~$km $0.987$ $\pm0.006$ $\pm0.037$ 9 GREENWOOD 1996 Savannah River, $18.2~$m $0.988$ $\pm0.004$ $\pm0.05$ ACHKAR 1995 CNTR Bugey reactor, 15$~$m $0.994$ $\pm0.010$ $\pm0.05$ ACHKAR 1995 CNTR Bugey reactor, 40$~$m $0.915$ $\pm0.132$ $\pm0.05$ ACHKAR 1995 CNTR Bugey reactor, 95$~$m $0.987$ $\pm0.014$ $\pm0.027$ 10 DECLAIS 1994 CNTR Bugey reactor, 15$~$m $0.985$ $\pm0.018$ $\pm0.034$ KUVSHINNIKOV 1991 CNTR Rovno reactor $1.05$ $\pm0.02$ $\pm0.05$ VUILLEUMIER 1982 Gosgen reactor $0.955$ $\pm0.035$ $\pm0.110$ 11 KWON 1981 ${{\overline{\mathit \nu}}_{{{e}}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit n}}$ $0.89$ $\pm0.15$ 11 BOEHM 1980 ${{\overline{\mathit \nu}}_{{{e}}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit n}}$ 1  ALMAZAN 2020 use the RHF research reactor at ILL to compare their measured anti-neutrino event rate to the calculation by HUBER 2011. Reported $0.948$ $\pm0.008$ $\pm0.023$ $\pm0.023$ measurement with uncertainties from statistics, systematic, and model. Note that this result is obtained for highly enriched ${}^{235}\mathrm {U}$ reactor fuel while most other reactor experiments utilize a low-enrichment mix of fissile nuclides. 2  ADEY 2019 present a re-analysis of 1230 days of Daya Bay near detector data with reduced systematic uncertainties on the neutron detection efficiency. Note that ADEY 2019 report the measured to predicted antineutrino ratio using the reactor model of MUELLER 2011 (Huber-Mueller model). The ratio using the older ILL-Vogel model is $1.001$ $\pm0.015$ $\pm0.027$. 3  AN 2016 use 217 days of data (338k events) to determine the neutrino flux ratio relative to the prediction of Mueller-Huber and ILL-Vogel models (see AN 2016 for details). The reported flux ratios were corrected for ${{\mathit \theta}_{{{13}}}}$ oscillation effect. The flux measurement is consistent with results from previous short-baseline reactor experiments. The measured inverse beta decay yield is ($1.55$ $\pm0.04$) $ \times 10^{-18}$ cm${}^{2}$/(GW day) or $\sigma _{f}$ = ($5.92$ $\pm0.14$) $ \times 10^{-43}$ cm${}^{2}$/fission. About 4$\sigma $ excess of events was observed in the $4 - 6$ MeV prompt energy region. 4  DENIZ 2010 observe reactor ${{\overline{\mathit \nu}}_{{{e}}}}{{\mathit e}}$ scattering with recoil kinetic energies $3 - 8$ MeV using CsI(Tl) detectors. The observed rate is consistent with the Standard Model prediction, leading to a constraint on sin$^2{{\mathit \theta}_{{{W}}}}$ = $0.251$ $\pm0.031$(stat)$\pm0.024$(sys). 5  Updated result of KamLAND, including the data used in EGUCHI 2003. Note that the survival probabilities for different periods are not directly comparable because the effective baseline varies with power output of the reactor sources involved, and there were large variations in the reactor power production in Japan in 2003. 6  EGUCHI 2003 observe reactor neutrino disappearance at $\sim{}180~$km baseline to various Japanese nuclear power reactors. 7  BOEHM 2001 search for neutrino oscillations at $0.75$ and $0.89~$km distance from the Palo Verde reactors. 8  APOLLONIO 1999, APOLLONIO 1998 search for neutrino oscillations at $1.1~$km fixed distance from Chooz reactors. They use ${{\overline{\mathit \nu}}_{{{e}}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit n}}$ in Gd-loaded scintillator target. APOLLONIO 1999 supersedes APOLLONIO 1998. See also APOLLONIO 2003 for detailed description. 9  GREENWOOD 1996 search for neutrino oscillations at 18$~$m and 24$~$m from the reactor at Savannah River. 10  DECLAIS 1994 result based on integral measurement of neutrons only. Result is ratio of measured cross section to that expected in standard $\mathit V-\mathit A$ theory. Replaced by ACHKAR 1995. 11  KWON 1981 represents an analysis of a larger set of data from the same experiment as BOEHM 1980.

References