Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with 2.2 × 10^21 Protons on Target
| dc.contributor.author | Abe, K. | |
| dc.contributor.author | Akutsu, R. | |
| dc.contributor.author | Ali, A. | |
| dc.contributor.author | Amey, J. | |
| dc.contributor.author | Andreopoulos, C. | |
| dc.contributor.author | Anthony, L. | |
| dc.contributor.author | Antonova, M. | |
| dc.contributor.author | Aoki, S. | |
| dc.contributor.author | Ariga, A. | |
| dc.contributor.author | Ashida, Y. | |
| dc.contributor.author | Azuma, Y. | |
| dc.contributor.author | Ban, S. | |
| dc.contributor.author | Barbi, M. | |
| dc.contributor.author | Barker, G.J. | |
| dc.contributor.author | Barr, G. | |
| dc.contributor.author | Barry, C. | |
| dc.contributor.author | Batkiewicz, M. | |
| dc.contributor.author | Bench, F. | |
| dc.contributor.author | Karlen, Dean | |
| dc.contributor.author | et al. | |
| dc.date.accessioned | 2021-05-07T19:24:50Z | |
| dc.date.available | 2021-05-07T19:24:50Z | |
| dc.date.copyright | 2018 | en_US |
| dc.date.issued | 2018 | |
| dc.description.abstract | The T2K experiment measures muon neutrino disappearance and electron neutrino appearance in accelerator-produced neutrino and antineutrino beams. With an exposure of 14.7 ( 7.6 ) × 10 20 protons on target in the neutrino (antineutrino) mode, 89 ν e candidates and seven anti- ν e candidates are observed, while 67.5 and 9.0 are expected for δ C P = 0 and normal mass ordering. The obtained 2 σ confidence interval for the C P -violating phase, δ C P , does not include the C P -conserving cases ( δ C P = 0 , π ). The best-fit values of other parameters are sin 2 θ 23 = 0.52 6 + 0.032 − 0.036 and Δ m 2 32 = 2.463 + 0.071 − 0.070 × 10 − 3 eV 2 / c 4 . | en_US |
| dc.description.reviewstatus | Reviewed | en_US |
| dc.description.scholarlevel | Faculty | en_US |
| dc.description.sponsorship | We thank the J-PARC staff for superb accelerator performance. We thank the CERN NA61/SHINE Collaboration for providing valuable particle production data. We acknowledge the support of MEXT, Japan; NSERC (Grant No. SAPPJ-2014-00031), NRC, and CFI, Canada; CEA and CNRS/IN2P3, France; DFG, Germany; INFN, Italy; National Science Centre (NCN) and Ministry of Science and Higher Education, Poland; RSF, RFBR, and MES, Russia; MINECO and ERDF funds, Spain; SNSF and SERI, Switzerland; STFC, United Kingdom; and DOE, USA. We also thank CERN for the UA1/NOMAD magnet, DESY for the HERA-B magnet mover system, NII for SINET4, the WestGrid, SciNet, and CalculQuebec consortia in Compute Canada, and GridPP and the Emerald High Performance Computing facility in the United Kingdom. In addition, participation of individual researchers and institutions has been further supported by funds from ERC (FP7), H2020 Grant No. RISEGA644294- JENNIFER, EU; JSPS, Japan; Royal Society, United Kingdom; the Alfred P. Sloan Foundation and the DOE Early Career program, USA. | en_US |
| dc.identifier.citation | Abe, K., Akutsu, R., Ali, A., Amey, J., Andreopoulos, C., Karlen, D., … Zykova, A. (2018). Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with 2.2×1021 Protons on Target. Physical Review Letters, 121(17), 1-9. https://doi.org/10.1103/PhysRevLett.121.171802. | en_US |
| dc.identifier.uri | https://doi.org/10.1103/PhysRevLett.121.171802 | |
| dc.identifier.uri | http://hdl.handle.net/1828/12956 | |
| dc.language.iso | en | en_US |
| dc.publisher | Physical Review Letters | en_US |
| dc.subject.department | Department of Physics and Astronomy | |
| dc.title | Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with 2.2 × 10^21 Protons on Target | en_US |
| dc.type | Article | en_US |