Search for active neutrino disappearance using neutral-current interactions in the MINOS long-baseline experiment

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We have measured the rates and spectra of neutral-current neutrino interactions in the MINOS detectors, which are separated by 734 km. A depletion in the rate at the far site would indicate mixing between {nu}{sub {mu}} and a sterile particle. The depletion of the total neutral-current event rate at the far site is limited to be below 17% at 90% confidence level without {nu}{sub e} appearance. Assuming oscillations occur at a single mass-squared splitting, a fit to the neutral- and charged-current energy spectra shows the fraction of {nu}{sub {mu}} oscillating to a sterile neutrino is 0.28{sub -0.28}{sup +0.25}(stat.+syst.). Including {nu}{sub ... continued below

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Adamson, P.; /Fermilab; Andreopoulos, C.; /Rutherford; Arms, Kregg E.; U., /Minnesota et al. July 1, 2008.

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We have measured the rates and spectra of neutral-current neutrino interactions in the MINOS detectors, which are separated by 734 km. A depletion in the rate at the far site would indicate mixing between {nu}{sub {mu}} and a sterile particle. The depletion of the total neutral-current event rate at the far site is limited to be below 17% at 90% confidence level without {nu}{sub e} appearance. Assuming oscillations occur at a single mass-squared splitting, a fit to the neutral- and charged-current energy spectra shows the fraction of {nu}{sub {mu}} oscillating to a sterile neutrino is 0.28{sub -0.28}{sup +0.25}(stat.+syst.). Including {nu}{sub e} appearance at the current experimental upper bound limits the depletion to be below 21% at 90% confidence level and the fit fraction of {nu}{sub {mu}} oscillating to a sterile neutrino is 0.43{sub -0.27}{sup +0.23}(stat.+syst.).

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  • Report No.: FERMILAB-PUB-08-213-E
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 936271
  • Archival Resource Key: ark:/67531/metadc897583

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  • July 1, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 7, 2016, 9 p.m.

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Adamson, P.; /Fermilab; Andreopoulos, C.; /Rutherford; Arms, Kregg E.; U., /Minnesota et al. Search for active neutrino disappearance using neutral-current interactions in the MINOS long-baseline experiment, article, July 1, 2008; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc897583/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.