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

The ANTARES detector is at present the most sensitive neutrino telescope in the northern hemisphere. The highlysignificant 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. S...

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Main Authors:	Albert, A., André, M., Anghinolfi, M., Anton, G., Ardid, M., Aubert, J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Bourret, S., Bouwhuis, M., Branzas, H., Bruijn, R., Brunner, J., Busto, J., Capone, A., Caramete, L., Carr, J., Celli, S., El Moursli, R., Chiarusi, T., Circella, M., Coelho, J., Coleiro, A., Coniglione, R., Costantini, H., Coyle, P., Creusot, A., Diaz, A., Deschamps, A., Bonis, G., Distefano, C., Palma, I., Domi, A., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., Bojaddaini, I., Khayati, N., Elsasser, D., Enzenhöfer, A., Ettahiri, A., Fassi, F., Felis, I., Fusco, L., Gay, P., Giordano, V., Glotin, H., Grégoire, T., Ruiz, R., Graf, K., Hallmann, S., Haren, H., Heijboer, A., Hello, Y., Hernández-Rey, J., Hößl, J., Hofestadt, J., Illuminati, G., James, Clancy, 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.
Format:	Journal Article
Published:	Institute of Physics Publishing 2018
Online Access:	http://hdl.handle.net/20.500.11937/73220

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author	Albert, A. André, M. Anghinolfi, M. Anton, G. Ardid, M. Aubert, J. Aublin, J. Avgitas, T. Baret, B. Barrios-Marti, J. Basa, S. Belhorma, B. Bertin, V. Biagi, S. Bormuth, R. Bourret, S. Bouwhuis, M. Branzas, H. Bruijn, R. Brunner, J. Busto, J. Capone, A. Caramete, L. Carr, J. Celli, S. El Moursli, R. Chiarusi, T. Circella, M. Coelho, J. Coleiro, A. Coniglione, R. Costantini, H. Coyle, P. Creusot, A. Diaz, A. Deschamps, A. Bonis, G. Distefano, C. Palma, I. Domi, A. Donzaud, C. Dornic, D. Drouhin, D. Eberl, T. Bojaddaini, I. Khayati, N. Elsasser, D. Enzenhöfer, A. Ettahiri, A. Fassi, F. Felis, I. Fusco, L. Gay, P. Giordano, V. Glotin, H. Grégoire, T. Ruiz, R. Graf, K. Hallmann, S. Haren, H. Heijboer, A. Hello, Y. Hernández-Rey, J. Hößl, J. Hofestadt, J. Illuminati, G. James, Clancy 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.
author_facet	Albert, A. André, M. Anghinolfi, M. Anton, G. Ardid, M. Aubert, J. Aublin, J. Avgitas, T. Baret, B. Barrios-Marti, J. Basa, S. Belhorma, B. Bertin, V. Biagi, S. Bormuth, R. Bourret, S. Bouwhuis, M. Branzas, H. Bruijn, R. Brunner, J. Busto, J. Capone, A. Caramete, L. Carr, J. Celli, S. El Moursli, R. Chiarusi, T. Circella, M. Coelho, J. Coleiro, A. Coniglione, R. Costantini, H. Coyle, P. Creusot, A. Diaz, A. Deschamps, A. Bonis, G. Distefano, C. Palma, I. Domi, A. Donzaud, C. Dornic, D. Drouhin, D. Eberl, T. Bojaddaini, I. Khayati, N. Elsasser, D. Enzenhöfer, A. Ettahiri, A. Fassi, F. Felis, I. Fusco, L. Gay, P. Giordano, V. Glotin, H. Grégoire, T. Ruiz, R. Graf, K. Hallmann, S. Haren, H. Heijboer, A. Hello, Y. Hernández-Rey, J. Hößl, J. Hofestadt, J. Illuminati, G. James, Clancy 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.
author_sort	Albert, A.
building	Curtin Institutional Repository
collection	Online Access
description	The ANTARES detector is at present the most sensitive neutrino telescope in the northern hemisphere. The highlysignificant 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 diffuseneutrino signal, covering nine years of ANTARES data taking, are presented in this Letter. Upward-going eventsare used to reduce the atmospheric muon background. This work includes for the first time in ANTARES bothtrack-like (mainly nm) and shower-like (mainly ne) events in this kind of analysis. Track-like events allow for anincrease 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, theinstrumented volume. A mild excess of high-energy events over the expected background is observed in nine yearsof ANTARES data in both samples. The best fit for a single power-law cosmic neutrino spectrum, in terms of perflavorflux at 100 TeV, is f01f100 TeV (1.7±1.0) × 10-18GeV-1 cm-2 s-1 sr-1 with spectral index ?=2.4-0.4+0.5. The null cosmic flux assumption is rejected with a significance of 1.6d.
first_indexed	2025-11-14T10:55:49Z
format	Journal Article
id	curtin-20.500.11937-73220
institution	Curtin University Malaysia
institution_category	Local University
last_indexed	2025-11-14T10:55:49Z
publishDate	2018
publisher	Institute of Physics Publishing
recordtype	eprints
repository_type	Digital Repository
spelling	curtin-20.500.11937-732202018-12-13T09:35:22Z All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data Albert, A. André, M. Anghinolfi, M. Anton, G. Ardid, M. Aubert, J. Aublin, J. Avgitas, T. Baret, B. Barrios-Marti, J. Basa, S. Belhorma, B. Bertin, V. Biagi, S. Bormuth, R. Bourret, S. Bouwhuis, M. Branzas, H. Bruijn, R. Brunner, J. Busto, J. Capone, A. Caramete, L. Carr, J. Celli, S. El Moursli, R. Chiarusi, T. Circella, M. Coelho, J. Coleiro, A. Coniglione, R. Costantini, H. Coyle, P. Creusot, A. Diaz, A. Deschamps, A. Bonis, G. Distefano, C. Palma, I. Domi, A. Donzaud, C. Dornic, D. Drouhin, D. Eberl, T. Bojaddaini, I. Khayati, N. Elsasser, D. Enzenhöfer, A. Ettahiri, A. Fassi, F. Felis, I. Fusco, L. Gay, P. Giordano, V. Glotin, H. Grégoire, T. Ruiz, R. Graf, K. Hallmann, S. Haren, H. Heijboer, A. Hello, Y. Hernández-Rey, J. Hößl, J. Hofestadt, J. Illuminati, G. James, Clancy 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. The ANTARES detector is at present the most sensitive neutrino telescope in the northern hemisphere. The highlysignificant 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 diffuseneutrino signal, covering nine years of ANTARES data taking, are presented in this Letter. Upward-going eventsare used to reduce the atmospheric muon background. This work includes for the first time in ANTARES bothtrack-like (mainly nm) and shower-like (mainly ne) events in this kind of analysis. Track-like events allow for anincrease 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, theinstrumented volume. A mild excess of high-energy events over the expected background is observed in nine yearsof ANTARES data in both samples. The best fit for a single power-law cosmic neutrino spectrum, in terms of perflavorflux at 100 TeV, is f01f100 TeV (1.7±1.0) × 10-18GeV-1 cm-2 s-1 sr-1 with spectral index ?=2.4-0.4+0.5. The null cosmic flux assumption is rejected with a significance of 1.6d. 2018 Journal Article http://hdl.handle.net/20.500.11937/73220 10.3847/2041-8213/aaa4f6 Institute of Physics Publishing restricted
spellingShingle	Albert, A. André, M. Anghinolfi, M. Anton, G. Ardid, M. Aubert, J. Aublin, J. Avgitas, T. Baret, B. Barrios-Marti, J. Basa, S. Belhorma, B. Bertin, V. Biagi, S. Bormuth, R. Bourret, S. Bouwhuis, M. Branzas, H. Bruijn, R. Brunner, J. Busto, J. Capone, A. Caramete, L. Carr, J. Celli, S. El Moursli, R. Chiarusi, T. Circella, M. Coelho, J. Coleiro, A. Coniglione, R. Costantini, H. Coyle, P. Creusot, A. Diaz, A. Deschamps, A. Bonis, G. Distefano, C. Palma, I. Domi, A. Donzaud, C. Dornic, D. Drouhin, D. Eberl, T. Bojaddaini, I. Khayati, N. Elsasser, D. Enzenhöfer, A. Ettahiri, A. Fassi, F. Felis, I. Fusco, L. Gay, P. Giordano, V. Glotin, H. Grégoire, T. Ruiz, R. Graf, K. Hallmann, S. Haren, H. Heijboer, A. Hello, Y. Hernández-Rey, J. Hößl, J. Hofestadt, J. Illuminati, G. James, Clancy 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. All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data
title	All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data
title_full	All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data
title_fullStr	All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data
title_full_unstemmed	All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data
title_short	All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data
title_sort	all-flavor search for a diffuse flux of cosmic neutrinos with nine years of antares data
url	http://hdl.handle.net/20.500.11937/73220

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

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