Pistillo, C (2023). Measurements of neutrino oscillation parameters from the T2K experiment using 3.6 × 10 21 protons on target. The European physical journal. C, Particles and fields, 83(9), p. 782. Springer 10.1140/epjc/s10052-023-11819-x
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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.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP) |
UniBE Contributor: |
Pistillo, Ciro |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1434-6044 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
12 Sep 2023 14:46 |
Last Modified: |
29 Oct 2023 02:23 |
Publisher DOI: |
10.1140/epjc/s10052-023-11819-x |
PubMed ID: |
37680254 |
Additional Information: |
Kollaboration - Es sind nur die Berner Autor*innen namentlich erwaehnt |
BORIS DOI: |
10.48350/186179 |
URI: |
https://boris.unibe.ch/id/eprint/186179 |
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