Adamson P, Anghel I, Aurisano A, Barr G, Blake A, Cao S V, Carroll T J, Castromonte C M, Chen R, Childress S, Coelho J A B, De Rijck S, Evans J J, Feldman G J, Flanagan W, Gabrielyan M, Germani S, Gomes R A, Gouffon P, Graf N, Grzelak K, Habig A, Hahn S R, Hartnell J, Hatcher R, Holin A, Huang J, Koerner L W, Kordosky M, Kreymer A, Lang K, Lucas P, Mann W A, Marshak M L, Mayer N, Mehdiyev R, Meier J R, Miller W H, Mills G, Naples D, Nelson J K, Nichol R J, O'Connor J, Pahlka R B, Pavlović Ž, Pawloski G, Perch A, Pfützner M M, Phan D D, Plunkett R K, Poonthottathil N, Qiu X, Radovic A, Sail P, Sanchez M C, Schneps J, Schreckenberger A, Sharma R, Sousa A, Tagg N, Thomas J, Thomson M A, Timmons A, Todd J, Tognini S C, Toner R, Torretta D, Vahle P, Weber A, Whitehead L H, Wojcicki S G
Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 USA.
Phys Rev Lett. 2020 Sep 25;125(13):131802. doi: 10.1103/PhysRevLett.125.131802.
We report the final measurement of the neutrino oscillation parameters Δm_{32}^{2} and sin^{2}θ_{23} using all data from the MINOS and MINOS+ experiments. These data were collected using a total exposure of 23.76×10^{20} protons on target producing ν_{μ} and ν[over ¯]{μ} beams and 60.75 kt yr exposure to atmospheric neutrinos. The measurement of the disappearance of ν{μ} and the appearance of ν_{e} events between the Near and Far detectors yields |Δm_{32}^{2}|=2.40_{-0.09}^{+0.08}(2.45_{-0.08}^{+0.07})×10^{-3} eV^{2} and sin^{2}θ_{23}=0.43_{-0.04}^{+0.20}(0.42_{-0.03}^{+0.07}) at 68% C.L. for normal (inverted) hierarchy.
我们报告了使用来自MINOS和MINOS+实验的所有数据对中微子振荡参数Δm₃₂²和sin²θ₂₃进行的最终测量。这些数据是通过在靶上总共23.76×10²⁰个质子的曝光产生νμ和ν[μ上加一横]束流，并对大气中微子进行60.75千吨·年的曝光收集得到的。近探测器和远探测器之间νμ消失和νe事例出现的测量结果在68%置信水平下，对于正常（反转）层次结构给出|Δm₃₂²| = 2.40₋₀.₀₉⁺₀.₀₈(2.45₋₀.₀₈⁺₀.₀₇)×10⁻³ eV²以及sin²θ₂₃ = 0.43₋₀.₀₄⁺₀.₂₀(0.42₋₀.₀₃⁺₀.₀₇) 。
