Sterile neutrinos and the global reactor antineutrino dataset

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dc.contributor.authorBerryman, Jeffrey M.en
dc.contributor.authorHuber, Patricken
dc.contributor.departmentCenter for Neutrino Physicsen
dc.contributor.departmentPhysicsen
dc.date.accessioned2021-06-01T14:49:03Zen
dc.date.available2021-06-01T14:49:03Zen
dc.date.issued2021-01-26en
dc.description.abstractWe present results from global fits to the available reactor antineutrino dataset, as of Fall 2019, to determine the global preference for a fourth, sterile neutrino. We have separately considered experiments that measure the integrated inverse-beta decay (IBD) rate from those that measure the energy spectrum of IBD events at one or more locations. The evidence that we infer from rate measurements varies between less than or similar to 3 sigma and negligible depending on the reactor antineutrino flux model employed. Moreover, we find that spectral ratios ostensibly imply greater than or similar to 3 sigma evidence, consistent with previous work, though these measurements are known to be plagued by issues related to statistical interpretation; these results should therefore be viewed cautiously. The software used is the newly developed GLoBESfit tool set which is based on the publicly available GLoBES framework and will be released as open-source software.en
dc.description.notesWe thank Pedro Ochoa-Ricoux and Liang Zhan (Daya Bay); Giorgio Gratta (Palo Verde); Karsten Heeger, Bryce Littlejohn and Pranava Teja Surukuchi (PROSPECT); Soo-Bong Kim (RENO); and David Lhuillier (STEREO) for providing data and useful discussions. We further thank Muriel Fallot for providing the ab initio fluxes in machine-readable format and Leendert Hayen for information on the HKSS model, as well as Carlo Giunti and Marco Laveder for discussions regarding Neutrino-4. JMB thanks the Fermilab Neutrino Physics Center for their hospitality during the completion of this work, as well as Andre de Gouvea, Peter Denton, Kevin Kelly and Yue Zhang for helpful conversations. We again thank Bryce Littlejohn for pointing out bugs in a previous version of this analysis. This work is supported by DOE Office of Science awards DE-SC0018327 and DE-SC0020262. The work of JMB is also supported by NSF Grant PHY-1630782 and by Heising-Simons Foundation Grant 2017-228.en
dc.description.sponsorshipDOE Office of ScienceUnited States Department of Energy (DOE) [DE-SC0018327, DE-SC0020262]; NSFNational Science Foundation (NSF) [PHY-1630782]; Heising-Simons Foundation [2017-228]en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1007/JHEP01(2021)167en
dc.identifier.issn1029-8479en
dc.identifier.issue1en
dc.identifier.other167en
dc.identifier.urihttp://hdl.handle.net/10919/103553en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectNeutrino Physicsen
dc.subjectBeyond Standard Modelen
dc.titleSterile neutrinos and the global reactor antineutrino dataseten
dc.title.serialJournal of High Energy Physicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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