An algorithm for the reconstruction of high-energy neutrino-induced particle showers and its application to the ANTARES neutrino telescope
A novel algorithm to reconstruct neutrino-induced particle showers within the ANTARES neutrino telescope is presented. The method achieves a median angular resolution of 6°6° for shower energies below 100 TeV. Applying this algorithm to 6 years of data taken with the ANTARES detector, 8 events with...
| Autores: | , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/107297 |
| Acceso en línea: | https://hdl.handle.net/2117/107297 https://dx.doi.org/10.1140/epjc/s10052-017-4979-2 |
| Access Level: | acceso abierto |
| Palabra clave: | Neutrino astrophysics Neutrinos Algorithms Neutrins Astrofísica Algorismes Àrees temàtiques de la UPC::Física::Astronomia i astrofísica |
| Sumario: | A novel algorithm to reconstruct neutrino-induced particle showers within the ANTARES neutrino telescope is presented. The method achieves a median angular resolution of 6°6° 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 90%90% C.L. upper limit on the diffuse astrophysical neutrino flux with a value per neutrino flavour of E2·F90%=4.9·10-8GeV·cm-2·s-1·sr-1E2·F90%=4.9·10-8GeV·cm-2·s-1·sr-1 is set, applicable to the energy range from 23 TeV to 7.8 PeV, assuming an unbroken E-2E-2 spectrum and neutrino flavour equipartition at Earth. |
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