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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/14610

Title: Upper limit on the diffuse flux of ultrahigh energy tau neutrinos from the pierre auger observatory
Other Titles: Physical Review Letters
Authors: Pepe, Iuri Muniz
Abraham, J.
Abreu, P.
Aglietta, M.
Aguirre, C.
Issue Date: 2008
Abstract: The surface detector array of the Pierre Auger Observatory is sensitive to Earth-skimming tau neutrinos that interact in Earth’s crust. Tau leptons from ντ charged-current interactions can emerge and decay in the atmosphere to produce a nearly horizontal shower with a significant electromagnetic component. The data collected between 1 January 2004 and 31 August 2007 are used to place an upper limit on the diffuse flux of ντ at EeV energies. Assuming an E−2ν differential energy spectrum the limit set at 90% C.L. is E2νdNντ/dEν<1.3×10−7  GeV cm−2 s−1 sr−1 in the energy range 2×1017  eV<Eν<2×1019  eV.
Description: p. 1-7
URI: http://repositorio.ufba.br/ri/handle/ri/14610
ISSN: 0031-9007
Appears in Collections:Artigos Publicados em Periódicos (FIS)

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