Limits to the diffuse flux of UHE tau neutrinos at EeV energies from the Pierre Auger Observatory

Abstract

With the Pierre Auger Observatory we have the capability of detecting ultra-high energy neutrinos by searching for very inclined showers with a significant electromagnetic component. In this work we discuss the discrimination power of the instrument for earth skimming tau neutrinos with ultra-high energies. Based on the data collected since January 2004 an upper limit to the diffuse flux of neutrinos atEeV energies is presented and systematic uncertainties are discussed.

To be published in Proceedings of the 30th International Cosmic Ray Conference, July 3 - 11, 2007, Merida, Yucatan, Mexico. 4 pages, 5 figures

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