|
Résumé |
First results from the JUNO reactor neutrino experiment already determine with
world-leading precision to the solar mixing parameters. This presentation will
perform an exploratory study explaining why JUNO is able to determine with
precision the solar mixing parameters and beyond these, taking advantage of the
first JUNO data release to discuss its sensitivity to the large squared-mass
splitting, the atmospheric mass-splitting.
This presentation will discuss why JUNO in the future will be able to determine
the neutrino mass ordering. On the other side, the actual data, when combined with
constraints from global oscillation data, may already contain some information on
the neutrino mass ordering. Indeed, we find that the combination of the
complementary solar and atmospheric mass splitting determinations gives a slight
preference for Normal Ordering, with a p-value for Inverted Ordering of 2%–2.6%
(2.2\sigma–2.3\sigma). We study the robustness of this result with respect to
potential
systematic uncertainties and statistical fluctuations. Taken at face value, a full
global analysis of oscillation data including the publicly available JUNO
information and data leads to a preference for Normal Ordering with \Delta\chi^2 =
4.6 and 9.4 without and with Super-K and IceCube-24 atmospheric neutrino data,
respectively. |
