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Etude de la sensibilité du détecteur ANTARES à un flux diffus de neutrinos cosmiques de haute énergie

Abstract : The ANTARES collaboration aims to built an underwater neutrino telescope, 2 400 m deep, 40 km from Toulon (France). This detector is constituted by 12 strings, each one comprising 90 photomulti-pliers. Neutrinos are detected through their charged current interaction in the medium surrounding the detector (water or rock) leading to the production of a muon in the final state. Its Tcherenkov light emitted all along its travel is detected by a three dimensional array of photomultipliers.The diffuse neutrino flux is constituted by the addition of the neutrino emission of sources. Only as-trophysical ones have been discussed. The different theoretical models predicting such a flux have been listed and added to the simulation possibilities. As the muon energy reconstruction was a crucial parameter in this analysis, a new energy estimator has been developed. It gives a resolution of a factor three on the muon energy above 1 TeV. Discriminant variables have been also developed in order to reject the atmospheric muon background.Including all these developments, the ANTARES sensitivity is found to be around 8.10-8 GeV·cm-2·s-1·sr-1 after one year of data taking for an E-2 spectrum and a 10 string detector.
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https://tel.archives-ouvertes.fr/tel-00002856
Contributor : Alain Romeyer Connect in order to contact the contributor
Submitted on : Wednesday, May 21, 2003 - 5:32:58 PM
Last modification on : Friday, October 23, 2020 - 4:42:46 PM
Long-term archiving on: : Friday, April 2, 2010 - 6:35:19 PM

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Alain Romeyer. Etude de la sensibilité du détecteur ANTARES à un flux diffus de neutrinos cosmiques de haute énergie. Cosmologie et astrophysique extra-galactique [astro-ph.CO]. Université Paris-Diderot - Paris VII, 2003. Français. ⟨tel-00002856⟩

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