UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

New Limits on the Ultrahigh Energy Cosmic Neutrino Flux from the ANITA Experiment

Gorham, PW; Allison, P; Barwick, SW; Beatty, JJ; Besson, DZ; Binns, WR; ... ANITA Collaboration,; + view all (2009) New Limits on the Ultrahigh Energy Cosmic Neutrino Flux from the ANITA Experiment. PHYS REV LETT , 103 (5) , Article 051103. 10.1103/PhysRevLett.103.051103. Green and gold open access

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
466Kb

Abstract

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-nu similar or equal to 3 x 10(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.

Type:Article
Title:New Limits on the Ultrahigh Energy Cosmic Neutrino Flux from the ANITA Experiment
Open access status:An open access publication. A version is also available from UCL Discovery.
DOI:10.1103/PhysRevLett.103.051103
Publisher version:http://dx.doi.org/10.1103/PhysRevLett.103.051103
Language:English
Additional information:© 2009 The American Physical Society
Keywords:RAY AIR-SHOWERS, COHERENT RADIO EMISSION, SPECTRUM, DETECTOR, CHARGE
UCL classification:UCL > School of Life and Medical Sciences > Faculty of Medical Sciences > Surgery and Interventional Science (Division of)
UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy

View download statistics for this item

Archive Staff Only: edit this record