Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Measurements of neutrino oscillation parameters from the T2K experiment using 3.6 × 10 21 protons on target
Ist Teil von
The European physical journal. C, Particles and fields, 2023, Vol.83 (9), p.782
Ort / Verlag
France
Erscheinungsjahr
2023
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
The T2K experiment presents new measurements of neutrino oscillation parameters using
protons on target (POT) in (anti-)neutrino mode at the far detector (FD). Compared to the previous analysis, an additional
POT neutrino data was collected at the FD. Significant improvements were made to the analysis methodology, with the near-detector analysis introducing new selections and using more than double the data. Additionally, this is the first T2K oscillation analysis to use NA61/SHINE data on a replica of the T2K target to tune the neutrino flux model, and the neutrino interaction model was improved to include new nuclear effects and calculations. Frequentist and Bayesian analyses are presented, including results on
and the impact of priors on the
measurement. Both analyses prefer the normal mass ordering and upper octant of
with a nearly maximally CP-violating phase. Assuming the normal ordering and using the constraint on
from reactors,
using Feldman-Cousins corrected intervals, and
using constant
intervals. The CP-violating phase is constrained to
using Feldman-Cousins corrected intervals, and
is excluded at more than 90% confidence level. A Jarlskog invariant of zero is excluded at more than
credible level using a flat prior in
and just below
using a flat prior in
When the external constraint on
is removed,
in agreement with measurements from reactor experiments. These results are consistent with previous T2K analyses.
Sprache
Englisch
Identifikatoren
ISSN: 1434-6044
Titel-ID: cdi_pubmed_primary_37680254
Format
–
Weiterführende Literatur
Empfehlungen zum selben Thema automatisch vorgeschlagen von bX