An algorithm for the reconstruction of high-energy neutrino-induced particle showers and its application to the ANTARES neutrino telescope

A. Albert M. André M. Anghinolfi G. Anton M. Ardid J.-J. Aubert 1 T. Avgitas 2 B. Baret 2 J. Barrios-Martí S. Basa 3 V. Bertin 1 S. Biagi R. Bormuth S. Bourret 2 M.C. Bouwhuis R. Bruijn J. Brunner 1 J. Busto 1 A. Capone L. Caramete J. Carr 1 S. Celli T. Chiarusi M. Circella J.A.B. Coelho 2 A. Coleiro 2 R. Coniglione H. Costantini 1 P. Coyle 1 A. Creusot 2 A. Deschamps 4 G. De Bonis C. Distefano I. Di Palma A. Domi C. Donzaud 2, 5 D. Dornic 1 D. Drouhin T. Eberl I. El Bojaddaini D. Elsässer A. Enzenhöfer 1 I. Felis F. Folger L.A. Fusco S. Galatà 2 P. Gay 2, 6 V. Giordano H. Glotin 7, 8 T. Grégoire 2 R. Gracia Ruiz 2 K. Graf S. Hallmann H. Van Haren A.J. Heijboer Y. Hello 4 J.J. Hernández-Rey J. Hößl J. Hofestädt C. Hugon G. Illuminati C.W. James M. De Jong M. Jongen M. Kadler O. Kalekin U. Katz D. Kießling A. Kouchner 2 M. Kreter I. Kreykenbohm V. Kulikovskiy 1 C. Lachaud 2 R. Lahmann D. Lefèvre 9 E. Leonora M. Lotze S. Loucatos 2, 10 M. Marcelin 3 A. Margiotta A. Marinelli J.A. Martínez-Mora R. Mele K. Melis T. Michael P. Migliozzi A. Moussa E. Nezri 3 M. Organokov 11 G.E. Păvălaş C. Pellegrino C. Perrina P. Piattelli V. Popa T. Pradier 11 L. Quinn 1 C. Racca G. Riccobene A. Sánchez-Losa M. Saldaña I. Salvadori 1 D.F.E. Samtleben M. Sanguineti P. Sapienza F. Schüssler 10 C. Sieger M. Spurio Th. Stolarczyk 10 M. Taiuti Y. Tayalati A. Trovato D. Turpin 1 C. Tönnis B. Vallage 2, 10 V. Van Elewyck 2 F. Versari D. Vivolo A. Vizzoca J. Wilms J.D. Zornoza J. Zúñiga
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 $6^\circ $ 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 $90\%$ C.L. upper limit on the diffuse astrophysical neutrino flux with a value per neutrino flavour of $\text {E}^2\cdot \Phi ^{90\%} = 4.9 \cdot 10^{-8}\,\mathrm {GeV} \cdot \mathrm {cm^{-2} \cdot s^{-1}\cdot sr^{-1}}$ is set, applicable to the energy range from 23 TeV to 7.8 PeV, assuming an unbroken $\text {E}^{-2}$ spectrum and neutrino flavour equipartition at Earth.
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https://hal.archives-ouvertes.fr/hal-01554915
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Soumis le : lundi 3 juillet 2017 - 18:26:08
Dernière modification le : jeudi 6 juillet 2017 - 01:10:01

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A. Albert, M. André, M. Anghinolfi, G. Anton, M. Ardid, et al.. An algorithm for the reconstruction of high-energy neutrino-induced particle showers and its application to the ANTARES neutrino telescope. Eur.Phys.J., 2017, <10.1140/epjc/s10052-017-4979-2>. <hal-01554915>

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