Updated global fit to three neutrino mixing: status of the hints of θ13 > 0

By M. Gonzalez-Garcia, M. Maltoni, Jordi Salvado. 2010

237 citations recorded by the source corpus.

We present an up-to-date global analysis of solar, atmospheric, reactor and accelerator neutrino data in the framework of three-neutrino oscillations. We discuss in detail the statistical significance of the observed “hint” of non-zero θ13 in the solar sector at the light of the latest experimental advances, such as the Borexino spectral data, the lower value of Gallium rate recently measured in SAGE, and the low energy threshold analysis of the combined SNO phase I and phase II. We also study the robustness of the results under changes of the inputs such as the choice of solar model fluxes and a possible modification of the Gallium capture cross-section as proposed by SAGE. In the atmospheric sector we focus on the latest results for νe appearance from MINOS and on the recent Super-Kamiokande results from the combined phases I, II and III, and we discuss their impact on the determination of θ13. Finally, we combine all the data into a global analysis and determine the presently allowed ranges of masses and mixing.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/94759f8b5029cd1e418edf69985b3a01b31a7cf9

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In Nuclear and High Energy Physics

1. M. Tórtola
2. Y. Farzan
3. M. Maltoni
4. M. Gonzalez-Garcia
5. T. Schwetz
6. A. Marrone
7. E. Lisi
8. A. Palazzo

Citations in the corpus

• Neutrino Oscillations and Non-standard Interactions (2017, methodology): “Due to a small tension between the preferred values of | ∆ m 331 | at θ 13 = 0 by MINOS experiment and Super-Kamiokande atmospheric neutrino data, the combined analysis of both experiments showed a preference for θ 13 > 0 [73–75].”
• Sterile neutrino oscillations: the global picture (2013, background): “[139, 140] and includes the Super-Kamiokande results from phases I, II and III [141] (80 data points in total).”
• Global fit to three neutrino mixing: critical look at present precision (2012, methodology): “[67], and seen in the figure, the statistical significance of this effect depends on the Standard Solar Model employed in the analysis, either the GS98 model or the AGSS09 [68]5 and, to lesser extend, on the capture cross-section in gallium employed6.”
• Global analysis of neutrino masses, mixings and phases: entering the era of leptonic CP violation searches (2012, result): “[17] M.”
• Neutrinoless double beta decay in seesaw models (2010, background): “and mixings [73] to derive figure 2, where the allowed value of mββ as a function of the mass of the lightest neutrino ml is shown.”