期刊
PHYSICAL REVIEW LETTERS
卷 107, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.021801
关键词
-
资金
- U.S. DOE
- United Kingdom STFC
- U.S. NSF
- State of Minnesota
- University of Athens, Greece
- Brazil FAPESP
- Brazil CNPq
- University of Minnesota
- STFC [ST/H001026/2, PP/E000347/1, ST/I002626/1, ST/H000887/2, ST/H001093/1, ST/H001026/1, MINOS/MINOS+, ST/F006977/1, ST/H001093/2, ST/K00073X/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/E000347/1, ST/H001093/1, ST/I002626/1, ST/H000887/2, ST/H001026/2, ST/H001026/1, ST/H001093/2, MINOS/MINOS+, ST/K00073X/1, ST/I002626/1 MINOS/MINOS+, ST/F006977/1] Funding Source: researchfish
- Division Of Physics
- Direct For Mathematical & Physical Scien [0855429, 855526] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [0970111] Funding Source: National Science Foundation
This Letter reports the first direct observation of muon antineutrino disappearance. The MINOS experiment has taken data with an accelerator beam optimized for (nu) over bar (mu) production, accumulating an exposure of 1.71 x 10(20) protons on target. In the Far Detector, 97 charged current (nu) over bar (mu) events are observed. The no-oscillation hypothesis predicts 156 events and is excluded at 6.3 sigma. The best fit to oscillation yields vertical bar Delta(m) over bar (2)vertical bar = [3.36(-0.40)(+0.46)(stat) +/- 0.06(sys)] x 10(-3) eV(2), sin(2)(2 (theta) over bar) = 0.86(-0.12)(+0.11)(stat) +/- 0.01(syst). The MINOS nu(mu) and (nu) over bar (mu) measurements are consistent at the 2.0% confidence level, assuming identical underlying oscillation parameters.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据