Status of 3ν oscillation parameters at the end of 2013

Topical Research Meeting: Prospects in Neutrino Physics

Capozzi, F.^1,2 ; Fogli, G.L.^1,2 ; Lisi, E.^2 ; Marrone, A.^1,2 ; Montanino, D.^3,4 ; Palazzo, A.^5

Dipartimento Interateneo di Fisica, Via Amendola 173, BARI

70126, Italy^1

Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Via Orabona 4, BARI

70126, Italy^2

Dipartimento di Matematica e Fisica, Via Arnesano, LECCE

73100, Italy^3

Istituto Nazionale di Fisica Nucleare, Sezione di Lecce, Via Arnesano, LECCE

73100, Italy^4

Max-Planck-Institut für Physik, Föhringer Ring 6, München

80805, Germany^5

关键词: Combined analysis;    Global analysis;    Mass gap;    Mass hierarchy;    Mixing angle;    Neutrino oscillations;    Oscillation parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/598/1/012002/pdf
DOI  :  10.1088/1742-6596/598/1/012002

来源: IOP

【 摘 要 】

Neutrino oscillation searches using a variety of sources (solar, atmospheric, accelerator and reactor neutrinos) have established a standard three-neutrino (3ν) mass-mixing framework and five of its parameters: the two squared mass gaps (δm2, Δm2) and the three mixing angles (θ12, θ13, θ23). At present, a single class of experiments dominates each of these parameters, while only combined analyses of various (eventually all) data sets are needed to constrain the still unknown mass hierarchy [sign(Δm2)], θ23octant and CP-violating phase δ. We review the status of the known and unknown parameters - as emerging from a global analysis of the oscillation data available at the end of 2013 - and discuss the correlations and stability of the such parameters within different combinations of data sets.