期刊
PHYSICAL REVIEW D
卷 103, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.103.112008
关键词
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资金
- MEXT, Japan
- JSPS KAKENHI, Japan [JP16H06288, JP18K03682, JP18H03701, JP18H05537, JP19J01119, JP19J22440, JP19J22258, JP20H00162, JP20H00149, JP20J20304]
- NSERC, Canada
- NRC, Canada
- CFI, Canada
- CEA, France
- CNRS/IN2P3, France
- DFG, Germany [RO 3625/2]
- INFN, Italy
- Ministry of Education and Science, Poland [DIR/WK/2017/05]
- National Science Centre, Poland [UMO-2018/30/E/ST2/00441]
- RSF, Russia [19-12-00325]
- RFBR, Russia [JSPS-RFBR 20-52-5001020]
- Ministry of Science and Higher Education, Russia [075-15-2020-778]
- MICINN, Spain [SEV-2016-0588, PID2019-107564GB-I00, PGC2018-099388-BI00]
- ERDF funds, Spain
- CERCA program, Spain
- SNSF, Switzerland
- SERI, Switzerland [200021_185012, 200020_188533, 20FL21_186178I]
- STFC, United Kingdom
- DOE, USA
- ERC (FP7)
- la Caixa Foundation [100010434, LCF/BQ/IN17/11620050]
- European Union's Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie Grant [713673, 754496]
- H2020 Grants [RISE-GA822070-JENNIFER2 2020, RISE-GA872549-SK2HK]
- JSPS, Japan
- Royal Society, United Kingdom
- French ANR Grant [ANR-19-CE31-0001]
- DOE Early Career program, USA
- [JPJSBP120204806]
- [JPJSBP120209601]
- Science and Technology Facilities Council [ST/S000879/1] Funding Source: researchfish
- Swiss National Science Foundation (SNF) [200021_185012, 200020_188533] Funding Source: Swiss National Science Foundation (SNF)
The T2K experiment reports updated measurements of neutrino and antineutrino oscillations using appearance and disappearance channels. Significant improvements have been made to the neutrino interaction model and far detector reconstruction. The data show a weak preference for normal mass ordering and the upper sin(2)theta(13) octant.
The T2K experiment reports updated measurements of neutrino and antineutrino oscillations using both appearance and disappearance channels. This result comes from an exposure of 14.9(16.4) x 10(20) protons on target in neutrino (antineutrino) mode. Significant improvements have been made to the neutrino interaction model and far detector reconstruction. An extensive set of simulated data studies have also been performed to quantify the effect interaction model uncertainties have on the T2K oscillation parameter sensitivity. T2K performs multiple oscillation analyses that present both frequentist and Bayesian intervals for the Pontecorvo-Maki-Nakagawa-Sakata parameters. For fits including a constraint on sin(2)theta(13) from reactor data and assuming normal mass ordering T2K measures sin(2)theta(13) = 0.53(-0.04)(+0.03) and Delta m(32)(2) = (2.45 +/- 0.07) x 10(-3) eV(2) c(-4). The Bayesian analyses show a weak preference for normal mass ordering 89)% posterior probability) and the upper sin(2)theta(13) octant (80% posterior probability), with a uniform prior probability assumed in both cases. The T2K data exclude CP conservation in neutrino oscillations at the 2 sigma level.
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