Measurement of neutrino and antineutrino oscillations using beam and atmospheric data in MINOS.

Measurement of neutrino and antineutrino oscillations using beam and atmospheric data in MINOS.
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DOI:
10.1103/physrevlett.110.251801
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发表时间:
2013-04
影响因子:
8.6
通讯作者:
P. Adamson;I. Anghel;I. Anghel;C. Backhouse;G. Barr;M. Bishai;A. Blake;G. Bock;D. Bogert-D.-Boge
P. Adamson;I. Anghel;I. Anghel;C. Backhouse;G. Barr;M. Bishai;A. Blake;G. Bock;D. Bogert-D.-Boge
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
P. Adamson;I. Anghel;I. Anghel;C. Backhouse;G. Barr;M. Bishai;A. Blake;G. Bock;D. Bogert-D.-Boge

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我们报告了利用MINOS的光束和大气数据测量ν(μ)和ν(μ)消失的振荡参数。这些数据包括在ν(μ)主导束流中靶上10.71×10(20)个质子的曝光,在ν(μ)增强束流中靶上3.36×10(20)个质子的曝光,以及37.88千吨/年的大气中微子。假设相同的ν和ν振荡参数,我们测量|Δm2| =(2.41(-0.10)(+0.09))×10(-3)eV 2和sin 2(2θ)= 0.950(-0.036)(+0.035)。允许独立的ν和ν振荡,我们测量的反中微子参数|Δm2| =(2.50(-0.25)(+0.23))×10(-3)eV 2和sin 2(2θ)= 0.97(-0.08)(+0.03),中微子参数变化最小。
We report measurements of oscillation parameters from ν(μ) and ν(μ) disappearance using beam and atmospheric data from MINOS. The data comprise exposures of 10.71×10(20) protons on target in the ν(μ)-dominated beam, 3.36×10(20) protons on target in the ν(μ)-enhanced beam, and 37.88 kton yr of atmospheric neutrinos. Assuming identical ν and ν oscillation parameters, we measure |Δm2| = (2.41(-0.10)(+0.09))×10(-3) eV2 and sin2(2θ) = 0.950(-0.036)(+0.035). Allowing independent ν and ν oscillations, we measure antineutrino parameters of |Δm2| = (2.50(-0.25)(+0.23))×10(-3) eV2 and sin2(2θ) = 0.97(-0.08)(+0.03), with minimal change to the neutrino parameters.