All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data

Journal article

Publication Details

Author(s): Albert A, Andre M, Anghinolfi M, Anton G, Ardid M, Aubert JJ, Aublin J, Avgitas T, Baret B, Barrios-Marti J, Basa S, Belhorma B, Bertin V, Biagi S, Bormuth R, Bourret S, Bouwhuis MC, Branzas H, Bruijn R, Brunner J, Busto J, Capone A, Caramete L, Carr J, Celli S, El Moursli RC, Chiarusi T, Circella M, Coelho JAB, Coleiro A, Coniglione R, Costantini H, Coyle P, Creusot A, Diaz AF, Deschamps A, De Bonis G, Distefano C, Di Palma I, Domi A, Donzaud C, Dornic D, Drouhin D, Eberl T, El Bojaddaini I, El Khayati N, Elsaesser D, Enzenhofer A, Ettahiri A, Fassi F, Felis I, Fusco LA, Gay P, Giordano V, Glotin H, Gregoire T, Ruiz RG, Graf K, Hallmann S, Van Haren H, Heijboer AJ, Hello Y, Hernandez-Rey JJ, Hößl J, Hofestädt J, Illuminati G, James C, De Jong M, Jongen M, Kadler M, Kalekin O, Katz U, Kießling D, Kouchner A, Kreter M, Kreykenbohm I, Kulikovskiy V, Lachaud C, Lahmann R, Lefevre D, Leonora E, Lotze M, Loucatos S, Marcelin M, Margiotta A, Marinelli A, Martinez-Mora JA, Mele R, Melis K, Michael T, Migliozzi P, Moussa A, Navas S, Nezri E, Organokov M, Pavalas GE, Pellegrino C, Perrina C, Piattelli P, Popa V, Pradier T, Quinn L, Racca C, Riccobene G, Sanchez-Losa A, Saldana M, Salvadori I, Samtleben DFE, Sanguineti M, Sapienza P, Schussler F, Sieger C, Spurio M, Stolarczyk T, Taiuti M, Tayalati Y, Trovato A, Turpin D, Tonnis C, Vallage B, Van Elewyck V, Versari F, Vivolo D, Vizzoca A, Wilms J, Zornoza JD, Zuniga J
Journal: Astrophysical Journal Letters
Publication year: 2018
Volume: 853
Journal issue: 1
ISSN: 2041-8205


The ANTARES detector is at present the most sensitive neutrino telescope in the northern hemisphere. The highly significant cosmic neutrino excess observed by the Antarctic IceCube detector can be studied with ANTARES, exploiting its complementing field of view, exposure, and lower energy threshold. Searches for an all-flavor diffuse neutrino signal, covering nine years of ANTARES data taking, are presented in this Letter. Upward-going events are used to reduce the atmospheric muon background. This work includes for the first time in ANTARES both track-like (mainly nu mu) and shower-like (mainly nu(e)) events in this kind of analysis. Track-like events allow for an increase of the effective volume of the detector thanks to the long path traveled by muons in rock and/ or sea water. Shower-like events are well reconstructed only when the neutrino interaction vertex is close to, or inside, the instrumented volume. A mild excess of high-energy events over the expected background is observed in nine years of ANTARES data in both samples. The best fit for a single power-law cosmic neutrino spectrum, in terms of perflavor flux at 100 TeV, is Phi(1f)(0) (100 TeV) = (1.7 +/- 1.0) x 10(-18) GeV-1 cm(-2) s(-1) sr(-1) with spectral index Gamma = 2.4(-0.4)(+0.5) .The null cosmic flux assumption is rejected with a significance of 1.6 sigma .

FAU Authors / FAU Editors

Anton, Gisela Prof. Dr.
Lehrstuhl für Experimentalphysik (Teilchen- und Astroteilchenphysik)
Eberl, Thomas PD Dr.
Lehrstuhl für Experimentalphysik (Teilchen- und Astroteilchenphysik)
Graf, Kay Dr.
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Hallmann, Steffen
Lehrstuhl für Experimentalphysik (Teilchen- und Astroteilchenphysik)
Hofestädt, Jannik Dr.
Lehrstuhl für Experimentalphysik (Teilchen- und Astroteilchenphysik)
Hößl, Jürgen Dr.
Lehrstuhl für Experimentalphysik (Teilchen- und Astroteilchenphysik)
James, Clancy
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Katz, Uli Prof. Dr.
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Kießling, Dominik
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Kreykenbohm, Ingo Dr.
Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut
Lahmann, Robert PD Dr.
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Sieger, Christoph
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Wilms, Jörn Prof. Dr.
Professur für Astronomie und Astrophysik

External institutions with authors

Aix-Marseille University / Aix-Marseille Université
Commissariat à l'énergie atomique
Institute of Space Science (ISS) / Institutul de Științe Spațiale
Julius-Maximilians-Universität Würzburg
Laboratoire d'Astrophysique de Marseille (LAM)
Mohamed I University
Mohammed V University (UMVA) / جامعة محمد الخامس‎
National Center for Energy Science & Nuclear Technology
National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN)
National Institute for Subatomic Physics / Nationaal instituut voor subatomaire fysica (Nikhef)
Polytechnic University of Catalonia / Universitat Politècnica de Catalunya
Polytechnic University of Valencia / Universidad Politécnica de Valencia
Royal Netherlands Institute for Sea Research (NIOZ)
Universidad de Cádiz (UCA)
Universidad de Granada
Université de Haute Alsace (UHA)
Université de Strasbourg (UDS)
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
University of València / Universitat de València

How to cite

Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid, M., Aubert, J.-J.,... Zuniga, J. (2018). All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data. Astrophysical Journal Letters, 853(1).

Albert, A., et al. "All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data." Astrophysical Journal Letters 853.1 (2018).


Last updated on 2019-24-05 at 16:08