Neutrino oscillations with MINOS and MINOS+

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• 作者：L.H. Whitehead¹ ; ^{l.whitehead@ucl.ac.uk" class="auth_mail" title="E-mail the corresponding author}
• 刊名：Nuclear Physics B
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：908
• 期：Complete
• 页码：130-150
• 全文大小：1517 K

文摘

The MINOS experiment ran from 2003 until 2012 and collected a data sample including 10.71×10²⁰$10.71\times {10}^{20}$ protons-on-target (POT) of beam neutrinos, 3.36×10²⁰$3.36\times {10}^{20}$ POT of beam antineutrinos and an atmospheric neutrino exposure of 37.88 kt yrs. The final measurement of the atmospheric neutrino oscillation parameters, ca2f480c4794fbd07">$\mathrm{\Delta }{m}_{32}^2$ and θ₂₃${\theta }_{23}$, came from a full three flavour oscillation analysis of the combined CC ν_μ${\nu }_{\mu }$ and CC ${\bar{\nu }}_{\mu }$ beam and atmospheric samples and the CC ν_e${\nu }_e$ and CC ${\bar{\nu }}_e$ appearance samples. This analysis yielded the most precise measurement of the atmospheric mass splitting ca2f480c4794fbd07">$\mathrm{\Delta }{m}_{32}^2$ performed to date. The results are $|\mathrm{\Delta }{m}_{32}^2|=[2.28\text{–}2.46]\times {10}^{-3}{\text{eV}}^2$ (68%) and sin²⁡θ₂₃=0.35–0.65${\sin }^2{\theta }_{23}=0.35\text{–}0.65$ (90%) in the normal hierarchy, and $|\mathrm{\Delta }{m}_{32}^2|=[2.32\text{–}2.53]\times {10}^{-3}{\text{eV}}^2$ (68%) and sin²⁡θ₂₃=0.34–0.67${\sin }^2{\theta }_{23}=0.34\text{–}0.67$ (90%) in the inverted hierarchy. The successor to MINOS in the NOν  A era at FNAL, MINOS+, is now collecting data mostly in the 3–10 GeV$3\text{–}10\text{GeV}$ region, and an analysis of ν_μ${\nu }_{\mu }$ disappearance using the first 2.99×10²⁰$2.99\times {10}^{20}$ POT of data produced results very consistent with those from MINOS. Future data will further test the standard neutrino oscillation paradigm and allow for improved searches for exotic phenomena including sterile neutrinos, large extra dimensions and non-standard interactions.