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 a good approximation, this reevaluation applies to all reactor neutrino experiments. The synthesis of published experiments at reactor-detector distances be...
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| Veröffentlicht in: | Journal of physics. Conference series 2013-01, Vol.408 (1), p.12025-4 |
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| description | Recently, new reactor antineutrino spectra have been provided for 235U, 239Pu, 241Pu, and 238U, increasing the mean flux by about 3 percent. To a good approximation, this reevaluation applies to all reactor neutrino experiments. The synthesis of published experiments at reactor-detector distances below 100 m leads to a ratio of observed event rate to predicted rate of 0.976 ± 0.024. With our new flux evaluation, this ratio shifts to 0.943 ± 0.023, leading to a deviation from unity at 98.6% C.L. which we call the reactor antineutrino anomaly. The compatibility of our results with the existence of a fourth non-standard neutrino state driving neutrino oscillations at short distances is discussed. The combined analysis of reactor data, gallium solar neutrino calibration experiments, and MiniBooNE-ν data disfavors the no-oscillation hypothesis at 99.8% C.L. The oscillation parameters are such that |Δm2new| > 1.5 eV2 (95%) and sin2(2θnew) = 0.14 ± 0.08 (95%). |
| doi_str_mv | 10.1088/1742-6596/408/1/012025 |
| format | Article |
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The oscillation parameters are such that |Δm2new| > 1.5 eV2 (95%) and sin2(2θnew) = 0.14 ± 0.08 (95%).</description><subject>Anomalies</subject><subject>Antineutrinos</subject><subject>Approximation</subject><subject>Experiments</subject><subject>Flux</subject><subject>Gallium</subject><subject>Neutrinos</subject><subject>Oscillations</subject><subject>Physics</subject><subject>Reactors</subject><subject>Solar neutrinos</subject><subject>Solar oscillations</subject><subject>Spectra</subject><issn>1742-6596</issn><issn>1742-6588</issn><issn>1742-6596</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNqFkE9LAzEQxYMoWKtfQQpevKzN5P-CFylWhYKXeg5pNsWU7aYm2UO_vVlWRHpxLjPDvPcYfgjdAn4ArNQcJCOV4LWYM1y2OQaCCT9Dk9_D-Z_5El2ltMOYlpITNFt_ull0xuYQZ6bLvnN9jr4LZQl70x6v0cXWtMnd_PQp-lg-rxev1er95W3xtKosFSxXAnhDQHGnLAFQ1oLbMNNspKFMWWgsppg2mJbXpJVCWU6UqIlVCljtCKNTdD_mHmL46l3Keu-TdW1rOhf6pEGCqnkJk0V6dyLdhT525TtNuJSECiKGQDGqbAwpRbfVh-j3Jh41YD2A0wMTPTDRBZwGPYIrxscTo_XZZB-6HI1v_7N_A0D7cFw</recordid><startdate>20130101</startdate><enddate>20130101</enddate><creator>Mention, G</creator><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>L7M</scope><scope>P5Z</scope><scope>P62</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7U5</scope><scope>8BQ</scope><scope>JG9</scope></search><sort><creationdate>20130101</creationdate><title>The reactor antineutrino anomaly</title><author>Mention, G</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c364t-615d2185e8c2118cc1eb4adb7a348c1dc0303d032027c768c528692c88149e243</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Anomalies</topic><topic>Antineutrinos</topic><topic>Approximation</topic><topic>Experiments</topic><topic>Flux</topic><topic>Gallium</topic><topic>Neutrinos</topic><topic>Oscillations</topic><topic>Physics</topic><topic>Reactors</topic><topic>Solar neutrinos</topic><topic>Solar oscillations</topic><topic>Spectra</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mention, G</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>Advanced Technologies & Aerospace Database (1962 - current)</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>Aerospace Database</collection><collection>SciTech Premium Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>ProQuest advanced technologies & aerospace journals</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Materials Research Database</collection><jtitle>Journal of physics. 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| source | IOPscience journals; Institute of Physics Open Access Journal Titles; Alma/SFX Local Collection; Free Full-Text Journals in Chemistry; EZB Electronic Journals Library |
| subjects | Anomalies Antineutrinos Approximation Experiments Flux Gallium Neutrinos Oscillations Physics Reactors Solar neutrinos Solar oscillations Spectra |
| title | The reactor antineutrino anomaly |
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