Improved measurement of muon antineutrino disappearance in MINOS

Adamson, P. and Nowak, Jaroslaw (2012) Improved measurement of muon antineutrino disappearance in MINOS. Physical review letters, 108 (19). ISSN 1079-7114

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Abstract

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
Additional Information:
© 2012 American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
66767
Deposited By:
Deposited On:
26 Sep 2013 09:18
Refereed?:
Yes
Published?:
Published
Last Modified:
31 May 2020 02:14