English

The latest T2K neutrino oscillation results

High Energy Physics - Experiment 2022-09-21 v3

Abstract

T2K is a long-baseline neutrino oscillation experiment taking data since 2010. A neutrino beam is produced at the J-PARC accelerator in Japan and is sampled at a Near Detector complex 280 m from the neutrino production point and at the far detector, Super-Kamiokande, located 295 km from the source. Beams predominantly composed of muon neutrinos or muon anti-neutrinos have been produced by changing the currents in the magnetic focusing horns. This presentation will show the most recent T2K oscillation results obtained from a combined analysis of the entire available data set in the muon neutrino and muon anti-neutrino disappearance channels, and in the electron neutrino and electron anti-neutrino appearance channels. The data cover runs 1 to 8 (2010 to 2017) and consist of 7.25210207.252 \cdot 10^{20} POT in neutrino mode and 7.53110207.531 \cdot 10^{20} POT in antineutrino mode. Using these data, we measure four oscillations parameters: sin2θ23\sin^2 \theta_{23}, sin2θ13\sin^2 \theta_{13}, Δm322\Delta m_{32}^2 and δCP\delta_{CP}. The analysis excludes CP-conservation in the neutrino sector at 90\% C.L.

Keywords

Cite

@article{arxiv.1709.04180,
  title  = {The latest T2K neutrino oscillation results},
  author = {L. Haegel},
  journal= {arXiv preprint arXiv:1709.04180},
  year   = {2022}
}

Comments

6 pages, 7 figures, 3 tables, proceeding of the EPS-HEP 2017 conference