We perform a combined fit to global neutrino oscillation data available as of fall 2016 in the scenario of three-neutrino oscillations and present updated allowed ranges of the six oscillation parameters. We discuss the differences arising between the consistent combination of the data samples from accelerator and reactor experiments compared to partial combinations. We quantify the confidence in the determination of the less precisely known parameters θ
 23, δ
 CP, and the neutrino mass ordering by performing a Monte Carlo study of the long baseline accelerator and reactor data. We find that the sensitivity to the mass ordering and the θ
 23 octant is below 1σ. Maximal θ
 23 mixing is allowed at slightly more than 90% CL. The best fit for the CP violating phase is around 270°, CP conservation is allowed at slightly above 1σ, and values of δ
 CP ≃ 90° are disfavored at around 99% CL for normal ordering and higher CL for inverted ordering.

https://link.springer.com/content/pdf/10.1007/JHEP01(2017)087.pdf

Updated fit to three neutrino mixing: exploring the accelerator-reactor complementarity

We review the present status of global analyses of neutrino oscillations, taking into account the most recent neutrino data including the latest KamLAND and K2K updates presented at Neutrino 2004, as well as state-of-the-art solar and atmospheric neutrino flux calculations. We give the two-neutrino solar + KamLAND results, and the two-neutrino atmospheric + K2K oscillation regions, discussing in each case the robustness of the oscillation interpretation against departures from the Standard Solar Model and the possible existence of non-standard neutrino physics. Furthermore, we give the best-fit values and allowed ranges of the three-flavour oscillation parameters from the current worlds' global neutrino data sample and discuss in detail the status of the small parameters α ≡ ΔmSOL2/ΔmATM2 as well as sin2 θ13, which characterize the strength of CP violating effects in neutrino oscillations. We also update the degree of rejection of four-neutrino interpretations of the LSND evidence in view of the most recent developments.

https://iopscience.iop.org/article/10.1088/1367-2630/6/1/122/pdf

Status of global fits to neutrino oscillations

We present a global analysis of solar, atmospheric, reactor and accelerator neutrino data in the framework of three-neutrino oscillations based on data available in summer 2014. We provide the allowed ranges of the six oscillation parameters and show that their determination is stable with respect to uncertainties related to reactor neutrino and solar neutrino flux predictions. We find that the maximal possible value of the Jarlskog invariant in the lepton sector is 0.033 ±0.010 (±0.027) at the 1σ (3σ) level and we use leptonic unitarity triangles to illustrate the ability of global oscillation data to obtain information on CP violation. We discuss “tendencies and tensions” of the global fit related to the octant of θ
 23 as well as the CP violating phase δ
 CP. The favored values of δ
 CP are around 3π/2 while values around π/2 are disfavored at about Δχ2 ≃6. We comment on the non-trivial task to assign a confidence level to this Δχ
 2 value by performing a Monte Carlo study of T2K data.

https://link.springer.com/content/pdf/10.1007/JHEP11%282014%29052.pdf

Updated fit to three neutrino mixing: status of leptonic CP violation

Phenomenology with Massive Neutrinos

We present an up-to-date global analysis of solar, atmospheric, reactor, and accelerator neutrino data in the framework of three-neutrino oscillations. We provide results on the determination of θ
 13 from global data and discuss the dependence on the choice of reactor fluxes. We study in detail the statistical significance of a possible deviation of θ
 23 from maximal mixing, the determination of its octant, the ordering of the mass states, and the sensitivity to the CP violating phase, and discuss the role of various complementary data sets in those respects.

/pdf/global-fit-to-three-neutrino-mixing-critical-look-at-present-2ht312d446.pdf

Global fit to three neutrino mixing: critical look at present precision

Search for neutrino oscillations at 15, 40 and 95 meters from a nuclear power reactor at Bugey

The multimedia information systems, in the context of a generalized communication, have to become an effective and relevant tool in the service of the social world. A first modelling of their conception as their realization looked in the daytime to the method of territorial intelligence Catalyse. The hypothesis founder of this research is that it is possible to translate concretely the contribution of the Sciences of information and communication in the process of methodological and technological transfer necessary for the development of Catalyse observatories, by combining them in theories stemming from the other disciplines (didactics, cognitive psychology, sociology, geography...). From the statement of a situation where SIC seem practically absent in methods of territorial intelligence, I operate in this research an empirical evaluation of the development of several Catalyse observatories: - State of the relations between the Territorial Intelligence and the Sciences of Information and Communication - Analyses of a corpus of territorial experiments at the European level - Modelling of the contributions of the Sciences of Information and the Communication in the Catalyse method and in the procedures of transfers This research succeeds concretely to propose procedures of transfer and educational tools organized in an optics of improvement of the conception of the systems of production and access to information. The procedures of transfer must be estimated and redefined in researches to come, also by taking into account evolutions of the society, and researches in Sciences of information and communication.

B. Lefievre

Papers

Search for neutrino oscillations at 15, 40 and 95 meters from a nuclear power reactor at Bugey

Limits on neutron emission following deuterium absorption into palladium and titanium.

A measurement of the KL0p → KS0p reaction between 4 and 14 GeV/c in the range 0.1 ⩽|t|⩽ 2 GeV2

A measurement of the KL0p elastic cross section for 3 ⩽p⩽13 GeV/c and 0.1⩽|t|⩽1.3 GeV2