Published May 11, 2012
| Published
Journal Article
Open
Improved Measurement of Muon Antineutrino Disappearance in MINOS
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 2.95×10^20 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) eV^2 and constrain the ν_μ mixing angle sin^(2)(2θ̅)>0.75 (90% C.L.). These values are in agreement with Δm^2 and sin^(2)(2θ) measured for νμ, removing the tension reported in [ P. Adamson et al. Phys. Rev. Lett. 107 021801 (2011)].
Additional Information
© 2012 American Physical Society. Received 13 February 2012; published 11 May 2012. This work was supported by the U.S. DOE; the United Kingdom STFC; the U.S. NSF; the State and University of Minnesota; the University of Athens, Greece; Brazil's FAPESP, CNPq and CAPES; and the Jeffress Memorial Trust. We are grateful to the Minnesota Department of Natural Resources and the personnel of the Soudan Laboratory and FermilabAttached Files
Published - Adamson2012p18360Phys_Rev_Lett.pdf
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Additional details
- Eprint ID
- 31830
- Resolver ID
- CaltechAUTHORS:20120606-132757863
- Department of Energy (DOE)
- Science and Technology Facilities Council (STFC)
- NSF
- University of Minnesota
- University of Athens
- Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
- Jeffress Memorial Trust
- State of Minnesota
- Created
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2012-06-06Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field