v2.0: Threeneutrino fit based on data available in September 2014
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 Summary of data included
 Parameter ranges
 Leptonic mixing matrix
 Twodimensional allowed regions
 Onedimensional χ^{2} projections
 CPviolation: Jarlskog invariant
 CPviolation: unitarity triangles
 Reactor fluxes
 Tension between Solar and KamLAND data
 Atmospheric masssquared splitting
 Tendencies: contribution of different data
 Tendencies: correlation between δ_{CP} and θ_{23}
 Tendencies: confidence levels on δ_{CP}
 Available data files
If you are using these results please refer to JHEP 11 (2014) 052 [arXiv:1409.5439] as well as NuFIT 2.0 (2014), www.nufit.org.

Threeflavor oscillation parameters from our fit to global data as of September 2014. The results are presented for the "Free Fluxes + RSBL" in which reactor fluxes have been left free in the fit and short baseline reactor data (RSBL) with L shorter than ~100 m are included. The numbers in the 1st (2nd) column are obtained assuming NO (IO), i.e., relative to the respective local minimum, whereas in the 3rd column we minimize also with respect to the ordering. Note that Δm^{2}_{3ℓ} = Δm^{2}_{31} > 0 for NO and Δm^{2}_{3ℓ} = Δm^{2}_{32} < 0 for IO. 

3σ CL ranges of the magnitude of the elements of the threeflavor leptonic mixing matrix under the assumption of the matrix U being unitary. The ranges in the different entries of the matrix are correlated due to the fact that, in general, the result of a given experiment restricts a combination of several entries of the matrix, as well as to the constraints imposed by unitarity. As a consequence choosing a specific value for one element further restricts the range of the others. 
Twodimensional allowed regions
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Global 3ν oscillation analysis. Each panel shows the twodimensional projection of the allowed sixdimensional region after marginalization with respect to the undisplayed parameters. The different contours correspond to the twodimensional allowed regions at 1σ, 90%, 2σ, 99%, 3σ CL (2 dof). Results for different assumptions concerning the analysis of data from reactor experiments are shown: full regions correspond to an analysis with the normalization of reactor fluxes left free and data from shortbaseline (less than 100 m) reactor experiments are included. For void regions shortbaseline reactor data are not included but reactor fluxes as predicted in arXiv:1106.0687 are assumed. Note that as atmospheric masssquared splitting we use Δm^{2}_{31} for NO and Δm^{2}_{32} for IO. The regions in the lower 4 panels are based on a Δχ^{2} minimized with respect to the mass ordering. 
Onedimensional χ^{2} projections
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Global 3ν oscillation analysis. The red (blue) curves are for Normal (Inverted) Ordering. Results for different assumptions concerning the analysis of data from reactor experiments are shown: for solid curves the normalization of reactor fluxes is left free and data from shortbaseline (less than 100 m) reactor experiments are included. For dashed curves shortbaseline data are not included but reactor fluxes as predicted in arXiv:1106.0687 are assumed. Note that as atmospheric masssquared splitting we use Δm^{2}_{31} for NO and Δm^{2}_{32} for IO. 
CPviolation: Jarlskog invariant
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Dependence of Δχ^{2} on the Jarlskog invariant. The red (blue) curves are for NO (IO). The normalization of reactor fluxes is left free and data from shortbaseline (less than 100 m) reactor experiments are included. 
CPviolation: unitarity triangles
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The six leptonic unitarity triangles. After scaling and rotating each triangle so that two of its vertices always coincide with (0,0) and (1,0), we plot the 1σ, 90%, 2σ, 99%, 3σ CL (2 dof) allowed regions of the third vertex. Note that in the construction of the triangles the unitarity of the U matrix is always explicitly imposed. 
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Allowed regions at 1σ, 90%, 2σ, 99%, 3σ CL (2 dof) in in the plane of θ_{13} and the flux reactor normalization f_{flux} (relative to the one predicted in arXiv:1106.0687). Full regions correspond to the combined analysis of all reactor neutrino experiments with the exception of KamLAND, but including the RSBL experiments. The green contours correspond to only the RSBL experiments and red contours include RSBL + mediumbaseline reactors without a near detector i.e., without including DayaBay and RENO. In this figure we fix Δm^{2}_{31} to its best fit value. 
Tension between Solar and KamLAND data
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Left: Allowed parameter regions (at 1σ, 90%, 2σ, 99%, 3σ CL for 2 dof) from the combined analysis of solar data for GS98 model (full regions with best fit marked by black star) and AGSS09 model (dashed void contours with best fit marked by a white dot), and for the analysis of KamLAND data (solid green contours with best fit marked by a green star) for fixed θ_{13} = 8.5°. We also show as orange contours the results of a global analysis for the GS98 model but without including the daynight information from SK. Right: Δχ^{2} dependence on Δm^{2}_{21} for the same three analysis after marginalizing over θ_{12}. 
Atmospheric masssquared splitting
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Determination of Δm^{2}_{3ℓ} at 1σ and 2σ (2 dof), where ℓ = 1 for NO (upper panels) and ℓ = 2 for IO (lower panels). The left panels show regions in the (sin^{2}θ_{23}, Δm^{2}_{3ℓ}) plane using both appearance and disappearance data from MINOS (green) and T2K (black), as well as SK atmospheric data (violet) and a combination of them (colored regions). Here θ_{13} is constrained to the 3σ range from the global fit. The right panels show regions in the (sin^{2}θ_{13}, Δm^{2}_{3ℓ}) plane using data from DayaBay (black), reactor data without DayaBay (violet), and their combination (colored regions). In all panels solar and KamLAND data are included to constrain Δm^{2}_{21} and θ_{12}. Contours are defined with respect to the local minimum in each panel. 
Tendencies: contribution of different data
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Cumulative contribution of different sets of experimental results to the present tendencies in the determination of the mass ordering, the octant of θ_{23} and of the CP violating phase. Left (right) panels are for IO (NO). Violet (dotted): solar, reactor and MINOS ν_{μ} disappearance data. Blue (dotdashed): same as violet, plus T2K ν_{μ} disappearance data. Green (shortdashed): same as blue, plus T2K ν_{e} appearance data. Red (longdashed): same as green, plus MINOS ν_{e} appearance data. Orange (solid): same as red, plus SuperK atmospheric data (global fit). 
Tendencies: correlation between δ_{CP} and θ_{23}
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Allowed regions from the global data at 1σ, 90%, 2σ, 99%, 3σ CL (2 dof) in the (θ_{23}, δ_{CP}) plane, after minimizing with respect to all undisplayed parameters. The left (right) panel corresponds to IO (NO). Contour regions in both panels are derived with respect to the global minimum which occurs for IO and is indicated by a star. The local minimum for NO is shown by a black dot. 
Tendencies: confidence levels on δ_{CP}
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Black curves show the Δχ^{2} levels corresponding to 68%, 90%, 95%, 99% CL obtained from a Monte Carlo simulation of T2K appearance and disappearance data. Dashed lines correspond to the canonical values based on the χ^{2} distribution with 1 dof. The blue curve shows the observed Δχ^{2} using T2K data. The shaded regions indicate the 90% confidence interval for δ_{CP} based on the distribution from simulated pseudodata (brown) and on the χ^{2} approximation (gray). The three panels correspond to different assumptions on the true value of θ_{23} used to generate the pseudodata. In the fit all parameters except δ_{CP} and θ_{23} are fixed to the global best fit values, assuming normal mass ordering. 
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