New Limits on the Ultra-High Energy Cosmic Neutrino Flux from the ANITA Experiment

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We report initial results of the first flight of the Antarctic Impulsive Transient Antenna (ANITA-1) 2006-2007 Long Duration Balloon flight, which searched for evidence of a diffuse flux of cosmic neutrinos above energies of E{sub v} = 3 x 10{sup 18} eV. ANITA-1 flew for 35 days looking for radio impulses due to the Askaryan effect in neutrino-induced electromagnetic showers within the Antarctic ice sheets. We report here on our initial analysis, which was performed as a blind search of the data. No neutrino candidates are seen, with no detected physics background. We set model-independent limits based on this result. ... continued below

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4 pages

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Gorham, P.W.; Allison, P.; U., /Hawaii; Barwick, S.W.; /UC, Irvine; Beatty, J.J. et al. December 1, 2011.

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We report initial results of the first flight of the Antarctic Impulsive Transient Antenna (ANITA-1) 2006-2007 Long Duration Balloon flight, which searched for evidence of a diffuse flux of cosmic neutrinos above energies of E{sub v} = 3 x 10{sup 18} eV. ANITA-1 flew for 35 days looking for radio impulses due to the Askaryan effect in neutrino-induced electromagnetic showers within the Antarctic ice sheets. We report here on our initial analysis, which was performed as a blind search of the data. No neutrino candidates are seen, with no detected physics background. We set model-independent limits based on this result. Upper limits derived from our analysis rule out the highest cosmogenic neutrino models. In a background horizontal-polarization channel, we also detect six events consistent with radio impulses from ultrahigh energy extensive air showers.

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4 pages

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  • Journal Name: Phys.Rev.Lett.103:051103,2009; Journal Volume: 103; Journal Issue: 5

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  • Report No.: SLAC-PUB-14818
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 1030510
  • Archival Resource Key: ark:/67531/metadc836623

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  • December 1, 2011

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  • May 19, 2016, 3:16 p.m.

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  • Nov. 30, 2016, 12:55 p.m.

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Gorham, P.W.; Allison, P.; U., /Hawaii; Barwick, S.W.; /UC, Irvine; Beatty, J.J. et al. New Limits on the Ultra-High Energy Cosmic Neutrino Flux from the ANITA Experiment, article, December 1, 2011; United States. (digital.library.unt.edu/ark:/67531/metadc836623/: accessed July 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.