Improved measurement of muon antineutrino disappearance in MINOS

UNSPECIFIED (2012) Improved measurement of muon antineutrino disappearance in MINOS. Physical review letters, 108 (19): 191801. ISSN 1079-7114

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We report an improved measurement of ν̅ μ disappearance over a distance of 735 km using the MINOS detectors and the Fermilab Main Injector neutrino beam in a ν̅ μ-enhanced configuration. From a total exposure of 2.95×1020 protons on target, of which 42% have not been previously analyzed, we make the most precise measurement of Δm̅ 2=[2.62-0.28+0.31(stat)±0.09(syst)]×10-3  eV2 and constrain the ν̅ μ mixing angle sin⁡2(2θ̅ )>0.75 (90% C.L.). These values are in agreement with Δm2 and sin⁡2(2θ) measured for νμ, removing the tension reported in [ P. Adamson et al. Phys. Rev. Lett. 107 021801 (2011)].

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
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© 2012 American Physical Society
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?? physics and astronomy(all) ??
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Deposited On:
26 Sep 2013 09:18
Last Modified:
31 Dec 2023 00:29