Search for Electron Antineutrino Appearance in a Long-Baseline Muon Antineutrino Beam
| dc.contributor.author | Abe, K. | |
| dc.contributor.author | Akutsu, K. | |
| dc.contributor.author | Ali, A. | |
| dc.contributor.author | Alt, C. | |
| 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 | Asada, Y. | |
| dc.contributor.author | Ashida, Y. | |
| dc.contributor.author | Atkin, E.T. | |
| dc.contributor.author | Awataguchi, 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 | Barrow, D. | |
| dc.contributor.author | Karlen, Dean | |
| dc.contributor.author | et al. | |
| dc.date.accessioned | 2021-05-06T20:05:28Z | |
| dc.date.available | 2021-05-06T20:05:28Z | |
| dc.date.copyright | 2020 | en_US |
| dc.date.issued | 2020 | |
| dc.description.abstract | Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. T2K observes 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40 σ and no discrepancy between data and PMNS predictions is found. A complementary analysis that introduces an additional free parameter which allows non-PMNS values of electron neutrino and antineutrino appearance also finds no discrepancy between data and PMNS predictions. | 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 European Organization for Nuclear Research (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 (Grant No. 19- 12-00325) and Ministry of Science and Higher Education, Russia; MINECO and ERDF funds, Spain; SNSF and State Secretariat for Education, Research and Innovation, Switzerland; STFC, UK; 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 Grid for Particle Physics in the United Kingdom. In addition, participation of individual researchers and institutions has been further supported by funds from ERC (FP7), “la Caixa” Foundation (ID 100010434, fellowship code LCF/BQ/IN17/11620050), the European Union’s Horizon 2020 Research and Innovation program under the Marie Sklodowska-Curie Grant Agreement No. 713673 and H2020 Grant No. RISEGA644294- JENNIFER 2020; JSPS, Japan; Royal Society, UK; and the DOE Early Career program, USA. | en_US |
| dc.identifier.citation | Abe, K., Akutsu, R., Ali, A., Alt, C., Andreopoulos, C., Karlen, D., … Zykova, A. (2020). Search for Electron Antineutrino Appearance in a Long-Baseline Muon Antineutrino Beam. Physical Review Letters, 124, 1-8. https://doi.org/10.1103/PhysRevLett.124.161802. | en_US |
| dc.identifier.uri | https://doi.org/10.1103/PhysRevLett.124.161802 | |
| dc.identifier.uri | http://hdl.handle.net/1828/12950 | |
| 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 Electron Antineutrino Appearance in a Long-Baseline Muon Antineutrino Beam | en_US |
| dc.type | Article | en_US |