期刊
PHYSICAL REVIEW LETTERS
卷 101, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.131802
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资金
- U.S. DOE
- U.K. STFC
- U.S. NSF
- State and University of Minnesota
- University of Athens, Greece
- Brazil's FAPESP
- CNPq
- Science and Technology Facilities Council [PP/E000347/1, PP/E000452/1, PP/E000398/1] Funding Source: researchfish
- STFC [PP/E000347/1, PP/E000398/1, PP/E000452/1] Funding Source: UKRI
This Letter reports new results from the MINOS experiment based on a two-year exposure to muon neutrinos from the Fermilab NuMI beam. Our data are consistent with quantum-mechanical oscillations of neutrino flavor with mass splitting vertical bar Delta m(2)vertical bar = (2.43 +/- 0.13) x 10(-3) eV(2) (68% C.L.) and mixing angle sin(2)(2 theta) > 0.90 (90% C.L.). Our data disfavor two alternative explanations for the disappearance of neutrinos in flight: namely, neutrino decays into lighter particles and quantum decoherence of neutrinos, at the 3.7 and 5.7 standard-deviation levels, respectively.
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