Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam
| dc.contributor.author | Abe, K. | |
| dc.contributor.author | Andreopoulos, C. | |
| dc.contributor.author | Antonova, M. | |
| dc.contributor.author | Aoki, S. | |
| dc.contributor.author | Ariga, A. | |
| dc.contributor.author | Assylbekov, S. | |
| dc.contributor.author | Autiero, D. | |
| dc.contributor.author | Barbi, M. | |
| dc.contributor.author | Barker, G.J. | |
| dc.contributor.author | Barr, G. | |
| dc.contributor.author | Bartet-Friburg, P. | |
| dc.contributor.author | Batkiewicz, M. | |
| dc.contributor.author | Bay, F. | |
| dc.contributor.author | Berardi, V. | |
| dc.contributor.author | Berkman, S. | |
| dc.contributor.author | Bhadra, S. | |
| dc.contributor.author | Blondel, A. | |
| dc.contributor.author | Bolognesi, S. | |
| dc.contributor.author | Karlen, Dean | |
| dc.contributor.author | et al. | |
| dc.date.accessioned | 2021-05-11T16:39:43Z | |
| dc.date.available | 2021-05-11T16:39:43Z | |
| dc.date.copyright | 2016 | en_US |
| dc.date.issued | 2016 | |
| dc.description.abstract | T2K reports its first measurements of the parameters governing the disappearance of ¯ ν μ in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic ¯ ν μ beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the ¯ ν μ survival probability is expected to be minimal. Using a data set corresponding to 4.01 × 10 20 protons on target, 34 fully contained μ -like events were observed. The best-fit oscillation parameters are sin 2 ( ¯ θ 23 ) = 0.45 and | Δ ¯ m 2 32 | = 2.51 × 10 − 3 eV 2 with 68% confidence intervals of 0.38 – 0.64 and 2.26 – 2.80 × 10 − 3 eV 2 , respectively. These results are in agreement with existing antineutrino parameter measurements and also with the ν μ disappearance parameters measured by T2K. | 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 and the CERN NA61 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), Poland; RSF, RFBR, and MES, Russia; MINECO and ERDF funds, Spain; SNSF and SERI, 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 and SciNet 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. RISE-GA644294-JENNIFER, EU; JSPS, Japan; Royal Society, UK; and the DOE Early Career program, USA. | en_US |
| dc.identifier.citation | Abe, K., Andreopoulos, C., Antonova, M., Aoki, S., Ariga, A., Karlen, D., … Żmuda, A. (2016). Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam. Physical Review Letters, 116(18), 1-8. https://doi.org/10.1103/PhysRevLett.116.181801. | en_US |
| dc.identifier.uri | https://doi.org/10.1103/PhysRevLett.116.181801 | |
| dc.identifier.uri | http://hdl.handle.net/1828/12970 | |
| dc.language.iso | en | en_US |
| dc.publisher | Physical Review Letters | en_US |
| dc.title | Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam | en_US |
| dc.type | Article | en_US |