Status of three-neutrino oscillation parameters, circa 2013
By Francesco Capozzi, G. Fogli, E. Lisi, A. Marrone, D. Montanino, A. Palazzo. 2013
434 citations recorded by the source corpus.
The standard three-neutrino ( 3 ν ) oscillation framework is being increasingly refined by results coming from different sets of experiments, using neutrinos from solar, atmospheric, accelerator and reactor sources. At present, each of the known oscillation parameters [the two squared mass gaps ( δ m 2 , Δ m 2 ) and the three mixing angles ( θ 12 , θ 13 , θ 23 ) ] is dominantly determined by a single class of experiments. Conversely, the unknown parameters (the mass hierarchy, the θ 23 octant and the CP-violating phase δ ) can currently be constrained only through a combined analysis of various (eventually all) classes of experiments. In the light of recent new results coming from reactor and accelerator experiments, and of their interplay with solar and atmospheric data, we update the estimated N σ ranges of the known 3 ν parameters and revisit the status of the unknown ones. Concerning the hierarchy, no significant difference emerges between normal and inverted mass ordering. A slight overall preference is found for θ 23 in the first octant and for nonzero CP violation with sin δ 0 ; however, for both parameters, such preference exceeds 1 σ only for normal hierarchy. We also discuss the correlations and stability of the oscillation parameters within different combinations of data sets.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/4c0d64174efb32bccad1ad9a6ceb2381ee5e0a30
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In Nuclear and High Energy Physics
Citations in the corpus
- Neutrino masses and cosmology with Lyman-alpha forest power spectrum (2015, background): “ the second one with normal hierarchy (NH), and the third one with inverted hierarchy (IH). In the latter two cases, the mass of each species is determined according to the squared mass dierences of [27]. The masses of the individual species in each case are given in Tab.3. Table 3: Masses of each n”
- Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report Volume 2: The Physics Program for DUNE at LBNF (2015, background): “The entire complement of neutrino experiments to date has measured five of the mixing parameters [4, 5, 6]: the three angles θ12, θ23 and (recently) θ13, and the two mass differences ∆m21 and ∆m31.”
- Letter of intent for KM3NeT 2.0 (2016, background): “The distributions for each parameter are uncorrelated and based on the current world uncertainties [93, 95, 178].”
- Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report Volume 1: The LBNF and DUNE Projects (2015, background): “The entire complement of neutrino experiments to date has measured five of the mixing parameters [4, 5, 6]: the three angles θ12, θ23 and (recently) θ13, and the two mass differences ∆m(2)21 and ∆m(2)31.”
- KM3MeT 2.0 Letter of intent for ARCA and ORCA (2016, background): “Table 10: The best fit values and 3σ ranges of the mixing parameters from [94], in the normal (NH) or inverted (IH) hierarchy hypothesis.”
- Constraint on neutrino masses from SDSS-III/BOSS Lyα forest and other cosmological probes (2014, methodology): “ one order of magnitude down to 0.2 eV. Figure14 shows the values of m that are consistent with the bounds on P m given in this paper and with the constraints on m2, m2, s2 12 and s 2 13 derived by [5] from the combination of atmospheric, solar, reactor and accelerator neutrino experiments, for both”