An algorithm for the reconstruction of high-energy neutrino-induced particle showers and its application to the ANTARES neutrino telescope.
Eur Phys J C Part Fields
; 77(6): 419, 2017.
Article
em En
| MEDLINE
| ID: mdl-28775667
ABSTRACT
A novel algorithm to reconstruct neutrino-induced particle showers within the ANTARES neutrino telescope is presented. The method achieves a median angular resolution of [Formula see text] for shower energies below 100 TeV. Applying this algorithm to 6 years of data taken with the ANTARES detector, 8 events with reconstructed shower energies above 10 TeV are observed. This is consistent with the expectation of about 5 events from atmospheric backgrounds, but also compatible with diffuse astrophysical flux measurements by the IceCube collaboration, from which 2-4 additional events are expected. A [Formula see text] C.L. upper limit on the diffuse astrophysical neutrino flux with a value per neutrino flavour of [Formula see text] is set, applicable to the energy range from 23 TeV to 7.8 PeV, assuming an unbroken [Formula see text] spectrum and neutrino flavour equipartition at Earth.
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MEDLINE
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En
Ano de publicação:
2017
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Article