Improved Search for Muon-Neutrino to Electron-Neutrino Oscillations in MINOS

Title: Improved Search for Muon-Neutrino to Electron-Neutrino Oscillations in MINOS

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Abstract

We report the results of a search for {nu}{sub e} appearance in a {nu}{sub {mu}} beam in the MINOS long-baseline neutrino experiment. With an improved analysis and an increased exposure of 8.2 x 10{sup 20} protons on the NuMI target at Fermilab, we find that 2sin{sup 2}({theta}{sub 23})sin{sup 2}(2{theta}{sub 13}) < 0.12(0.20) at 90% confidence level for {delta} = 0 and the normal (inverted) neutrino mass hierarchy, with a best-fit of 2sin{sup 2}({theta}{sub 23})sin{sub 2}(2{theta}{sub 13}) = 0.041{sub -0.031}{sup +0.047}(0.079{sub -0.053}{sup +0.071}). The {theta}{sub 13} = 0 hypothesis is disfavored by the MINOS data at the 89% confidence level.

Authors:: Bishai, M; Diwan, M V; Jaffe, D E; Ling, J; Viren, B; Whitehead, L

Publication Date:: 2011-10-28

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE SC OFFICE OF SCIENCE (SC)

OSTI Identifier:: 1049223

Report Number(s):: BNL-96769-2012-JA
Journal ID: ISSN 0031-9007; PRLTAO; R&D Project: PO-022; KA11011020; TRN: US1204416

DOE Contract Number:: DE-AC02-98CH10886

Resource Type:: Journal Article

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 107; Journal Issue: 18; Journal ID: ISSN 0031-9007

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FERMILAB; HYPOTHESIS; NEUTRINOS; OSCILLATIONS; PROTONS; TARGETS; Improved; search; Muon; Neutrino; Electron; Oscillations

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                    Bishai, M, Diwan, M V, Jaffe, D E, Ling, J, Viren, B, and Whitehead, L. Improved Search for Muon-Neutrino to Electron-Neutrino Oscillations in MINOS.  United States: N. p., 2011. 
        Web.

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                    Bishai, M, Diwan, M V, Jaffe, D E, Ling, J, Viren, B, & Whitehead, L. Improved Search for Muon-Neutrino to Electron-Neutrino Oscillations in MINOS.  United States.

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                    Bishai, M, Diwan, M V, Jaffe, D E, Ling, J, Viren, B, and Whitehead, L. Fri .  
        "Improved Search for Muon-Neutrino to Electron-Neutrino Oscillations in MINOS".  United States.

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@article{osti_1049223,

  title        = {Improved Search for Muon-Neutrino to Electron-Neutrino Oscillations in MINOS},

  author       = {Bishai, M and Diwan, M V and Jaffe, D E and Ling, J and Viren, B and Whitehead, L},

  abstractNote = {We report the results of a search for {nu}{sub e} appearance in a {nu}{sub {mu}} beam in the MINOS long-baseline neutrino experiment. With an improved analysis and an increased exposure of 8.2 x 10{sup 20} protons on the NuMI target at Fermilab, we find that 2sin{sup 2}({theta}{sub 23})sin{sup 2}(2{theta}{sub 13}) < 0.12(0.20) at 90% confidence level for {delta} = 0 and the normal (inverted) neutrino mass hierarchy, with a best-fit of 2sin{sup 2}({theta}{sub 23})sin{sub 2}(2{theta}{sub 13}) = 0.041{sub -0.031}{sup +0.047}(0.079{sub -0.053}{sup +0.071}). The {theta}{sub 13} = 0 hypothesis is disfavored by the MINOS data at the 89% confidence level.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/1049223},
  journal      = {Physical Review Letters},

  issn         = {0031-9007},

  number       = 18,

  volume       = 107,

  place        = {United States},

  year         = {2011},

  month        = {10}

}

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