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The fate of hints: updated global analysis of three-flavor neutrino oscillations

Esteban, Ivan; Gonzalez-Garcia, M.C.; Maltoni, Michele; Schwetz, Thomas; Zhou, Albert

Abstract:
Our herein described combined analysis of the latest neutrino oscillation data presented at the Neutrino2020 conference shows that previous hints for the neutrino mass ordering have significantly decreased, and normal ordering (NO) is favored only at the 1.6σ level. Combined with the χ$^{2}$ map provided by Super-Kamiokande for their atmospheric neutrino data analysis the hint for NO is at 2.7σ. The CP conserving value δ$_{CP}$ = 180° is within 0.6σ of the global best fit point. Only if we restrict to inverted mass ordering, CP violation is favored at the ∼ 3σ level. We discuss the origin of these results — which are driven by the new data from the T2K and NOvA long-baseline experiments —, and the relevance of the LBL-reactor oscillation frequency complementarity. The previous 2.2σ tension in ∆m$^{2}$$_{21}$ preferred by KamLAND and solar experiments is also reduced to the 1.1σ level after the inclusion of the latest Super-Kamiokande solar neutrino results. Finally we present updated allowed ranges for the oscillation parameters and for the leptonic Jarlskog determinant from the global analysis.

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Verlagsausgabe §
DOI: 10.5445/IR/1000124126
Veröffentlicht am 01.10.2020
Originalveröffentlichung
DOI: 10.1007/JHEP09(2020)178
Scopus
Zitationen: 113
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Zitationen: 139
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Kernphysik (IKP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1029-8479
KITopen-ID: 1000124126
HGF-Programm 51.03.06 (POF III, LK 01) Theoretische Astroteilchenphysik
Erschienen in Journal of high energy physics
Verlag Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Band 2020
Heft 9
Seiten Art. Nr.: 178
Vorab online veröffentlicht am 28.09.2020
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