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Results from the Anita experiment

  • Andrea Silvestri
  • , S. W. Barwick
  • , J. J. Beatty
  • , D. Z. Besson
  • , W. R. Binns
  • , B. Cai
  • , J. M. Clem
  • , A. Connolly
  • , D. F. Cowen
  • , P. F. Dowkontt
  • , M. A. Du Vernois
  • , P. A. Evenson
  • , D. Goldstein
  • , P. W. Gorham
  • , C. L. Hebert
  • , M. H. Israel
  • , J. G. Learned
  • , K. M. Liewer
  • , J. T. Link
  • , S. Matsuno
  • P. Miocinovic, J. Nam, C. J. Naudet, R. Nichol, K. Palladino, M. Rosen, D. Saltzberg, D. Seckel, A. Silvestri, B. T. Stokes, G. S. Varner, F. Wu

Research output: Contribution to journalReview articlepeer-review

Abstract

The ANtarctic Impulse Transient Antenna (ANITA) is the first long-duration balloon experiment designed to search and measure the flux of Greisen-Zapsepin-Kuzmin (GZK) neutrinos. We present new limits on neutrinos fluxes of astronomical origin from data collected with the successful launch of a 2-antenna prototype instrument, called ANITA-lite, that circled the Antarctic continent for 18.4 days in January 2004. We performed a search for Ultra-High-Energy (UHE) neutrinos with energies above 3 × 1018 eV. No excess events above the background expectation were observed and a neutrino flux following E-2 spectrum for all neutrino flavors, is limited to Ev-2F < 1.6 × 10-6 GeV cm-2 s-1 sr-1 for 1018.5 eV < Ev < 1023.5 eV at 90% confidence level. The launch of ANITA is scheduled for December 2006. Looking beyond ANITA, we describe a new idea, called ARIANNA (Antarctic Ross Iceshelf ANtenna Neutrino Array), to increase the sensitivity for GZK neutrinos by one order of magnitude better than ANITA.

Original languageEnglish (US)
Pages (from-to)2237-2246
Number of pages10
JournalModern Physics Letters A
Volume22
Issue number30
DOIs
StatePublished - Sep 28 2007

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Astronomy and Astrophysics
  • General Physics and Astronomy

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