Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.041801
Keywords
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Categories
Funding
- MEXT, Japan
- NSERC
- NRC
- CFI, Canada
- CEA
- CNRS/IN2P3, France
- DFG, Germany
- INFN, Italy
- Ministry of Science and Higher Education, Poland
- RAS
- MEST
- NRF, South Korea
- MICINN
- CPAN, Spain
- SNSF
- SER, Switzerland
- STFC, U.K
- DOE, USA
- ERC
- EU
- JSPS, Japan
- Royal Society, UK
- DOE-OJI
- DOE-Early Career program
- NSF
- A. P. Sloan Foundation, USA
- STFC [T2K, ST/J501074/1, ST/H00095X/1, ST/H003517/1, ST/F007418/1, ST/H001085/2, ST/G003300/1, ST/I00422X/1, ST/H001026/1, ST/F00754X/1, PP/E000487/1, ST/F009976/1, ST/H000747/1, ST/H00095X/2, ST/G003440/1, ST/F001924/1, ST/I505756/1, ST/F007833/1, ST/F003390/1, ST/H001026/2, ST/H000712/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/G003440/1, ST/H001026/1, ST/H001026/2, ST/J501074/1, PP/E000487/1, ST/F003390/1, ST/H000747/1, ST/F007833/1, ST/H00095X/2, ST/F001924/1, ST/I00422X/1, ST/H00095X/1, ST/H001085/2, ST/H003517/1, ST/F007418/1, ST/H000712/1, ST/G003300/1, ST/I505756/1, ST/F00754X/1, ST/F009976/1, T2K] Funding Source: researchfish
- Grants-in-Aid for Scientific Research [21244042, 22011006, 20674004, 10J01016, 23340062, 22540318, 10J00437, 18071005, 19104005, 22740145, 10F00774] Funding Source: KAKEN
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The T2K experiment observes indications of nu(mu) -> nu(mu) e appearance in data accumulated with 1.43 x 10(20) protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario with |Delta m(23)(2)| = 2.4 x 10(-3) eV(2), sin(2)2 theta(23) = 1 and sin(2)2 theta(13) = 0, the expected number of such events is 1.5 +/- 0.3(syst). Under this hypothesis, the probability to observe six or more candidate events is 7 x 10(-3), equivalent to 2.5 sigma significance. At 90% C.L., the data are consistent with 0.03(0.04) < sin(2)2 theta(13) < 0.28(0.34) for delta(CP) = 0 and a normal (inverted) hierarchy.
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