All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data
S [EN] The ANTARES detector is at present the most sensitive neutrino telescope in the northern hemisphere. The highly signi¿cant cosmic neutrino excess observed by the Antarctic IceCube detector can be studied with ANTARES, exploiting its complementing ¿eld of view, exposure, and lower energy thres...
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American Astronomical Society
2018
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Online Access: | https://doi.org/10.3847/2041-8213/aaa4f6 http://hdl.handle.net/10251/142999 |
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fttriple:oai:gotriple.eu:http://hdl.handle.net/10251/142999 2023-05-15T13:39:36+02:00 All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data Albert, A. Andre, M. Anghinolfi, M. Anton, G. Ardid Ramírez, Miguel Aubert, J.J. Aublin, J. Avgitas, T. Baret, B. Barrios-Marti, J. Basa, S. Belhorma, B. Bertin, V. Biagi, S. Bormuth, R. Felis-Enguix, Iván Martínez Mora, Juan Antonio Saldaña-Coscollar, María Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada Agence Nationale de la Recherche, Francia European Commission Conseil Régional, Île-de-France Generalitat Valenciana Conseil Régional d'Alsace Institut Universitaire de France European Regional Development Fund Instituto Nazionale di Fisica Nucleare Ministerio de Economía y Competitividad Conseil Régional Provence-Alpes-Côte d'Azur Département du Var and Ville de La Seyne-sur-Mer National Authority for Scientific Research, Rumanía Bundesministerium für Bildung und Forschung, Alemania Centre National de la Recherche Scientifique, Francia Netherlands Organization for Scientific Research Council on grants of the President of the Russian Federation Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos 2018-01-01 https://doi.org/10.3847/2041-8213/aaa4f6 http://hdl.handle.net/10251/142999 en eng American Astronomical Society urn:issn:2041-8205 doi:10.3847/2041-8213/aaa4f6 http://hdl.handle.net/10251/142999 other Repositorio Institucional de la Universitat Politècnica de València hist phil Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.3847/2041-8213/aaa4f6 2023-01-22T16:46:37Z S [EN] The ANTARES detector is at present the most sensitive neutrino telescope in the northern hemisphere. The highly signi¿cant cosmic neutrino excess observed by the Antarctic IceCube detector can be studied with ANTARES, exploiting its complementing ¿eld of view, exposure, and lower energy threshold. Searches for an all-¿avor 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 ¿rst time in ANTARES both track-like (mainly nm) and shower-like (mainly ne) 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 ¿t for a single power-law cosmic neutrino spectrum, in terms of per-¿avor ¿ux at 100 TeV, is (1.7+-1.0)10-18 GeV¿1 cm¿2 s¿1 sr¿1 with spectral index G=2.4+0.5-0.4. The null cosmic ¿ux assumption is rejected with a signi¿cance of 1.6¿. The authors acknowledge the financial support of the funding agencies: Centre National de la Recherche Scientifique (CNRS), Commissariat a l'energie atomique et aux energies alternatives (CEA), Commission Europeenne (FEDER fund and Marie Curie Program), Institut Universitaire de France (IUF), IdEx program and UnivEarthS Labex program at Sorbonne Paris Cite (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02), Labex OCEVU (ANR-11-LABX-0060) and the A*MIDEX project (ANR-11-IDEX-0001-02), Region Ile-de-France (DIM-ACAV), Region Alsace (contrat CPER), Region Provence-Alpes-Cote d'Azur, Departement du Var and Ville de La Seyne-sur-Mer, France; Bundesministerium fur Bildung und Forschung (BMBF), Germany; Istituto Nazionale di Fisica Nucleare (INFN), Italy; ... Article in Journal/Newspaper Antarc* Antarctic Unknown Antarctic The Antarctic The Astrophysical Journal 853 1 L7 |
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hist phil Albert, A. Andre, M. Anghinolfi, M. Anton, G. Ardid Ramírez, Miguel Aubert, J.J. Aublin, J. Avgitas, T. Baret, B. Barrios-Marti, J. Basa, S. Belhorma, B. Bertin, V. Biagi, S. Bormuth, R. Felis-Enguix, Iván Martínez Mora, Juan Antonio Saldaña-Coscollar, María All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data |
topic_facet |
hist phil |
description |
S [EN] The ANTARES detector is at present the most sensitive neutrino telescope in the northern hemisphere. The highly signi¿cant cosmic neutrino excess observed by the Antarctic IceCube detector can be studied with ANTARES, exploiting its complementing ¿eld of view, exposure, and lower energy threshold. Searches for an all-¿avor 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 ¿rst time in ANTARES both track-like (mainly nm) and shower-like (mainly ne) 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 ¿t for a single power-law cosmic neutrino spectrum, in terms of per-¿avor ¿ux at 100 TeV, is (1.7+-1.0)10-18 GeV¿1 cm¿2 s¿1 sr¿1 with spectral index G=2.4+0.5-0.4. The null cosmic ¿ux assumption is rejected with a signi¿cance of 1.6¿. The authors acknowledge the financial support of the funding agencies: Centre National de la Recherche Scientifique (CNRS), Commissariat a l'energie atomique et aux energies alternatives (CEA), Commission Europeenne (FEDER fund and Marie Curie Program), Institut Universitaire de France (IUF), IdEx program and UnivEarthS Labex program at Sorbonne Paris Cite (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02), Labex OCEVU (ANR-11-LABX-0060) and the A*MIDEX project (ANR-11-IDEX-0001-02), Region Ile-de-France (DIM-ACAV), Region Alsace (contrat CPER), Region Provence-Alpes-Cote d'Azur, Departement du Var and Ville de La Seyne-sur-Mer, France; Bundesministerium fur Bildung und Forschung (BMBF), Germany; Istituto Nazionale di Fisica Nucleare (INFN), Italy; ... |
author2 |
Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada Agence Nationale de la Recherche, Francia European Commission Conseil Régional, Île-de-France Generalitat Valenciana Conseil Régional d'Alsace Institut Universitaire de France European Regional Development Fund Instituto Nazionale di Fisica Nucleare Ministerio de Economía y Competitividad Conseil Régional Provence-Alpes-Côte d'Azur Département du Var and Ville de La Seyne-sur-Mer National Authority for Scientific Research, Rumanía Bundesministerium für Bildung und Forschung, Alemania Centre National de la Recherche Scientifique, Francia Netherlands Organization for Scientific Research Council on grants of the President of the Russian Federation Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos |
format |
Article in Journal/Newspaper |
author |
Albert, A. Andre, M. Anghinolfi, M. Anton, G. Ardid Ramírez, Miguel Aubert, J.J. Aublin, J. Avgitas, T. Baret, B. Barrios-Marti, J. Basa, S. Belhorma, B. Bertin, V. Biagi, S. Bormuth, R. Felis-Enguix, Iván Martínez Mora, Juan Antonio Saldaña-Coscollar, María |
author_facet |
Albert, A. Andre, M. Anghinolfi, M. Anton, G. Ardid Ramírez, Miguel Aubert, J.J. Aublin, J. Avgitas, T. Baret, B. Barrios-Marti, J. Basa, S. Belhorma, B. Bertin, V. Biagi, S. Bormuth, R. Felis-Enguix, Iván Martínez Mora, Juan Antonio Saldaña-Coscollar, María |
author_sort |
Albert, A. |
title |
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_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_sort |
all-flavor search for a diffuse flux of cosmic neutrinos with nine years of antares data |
publisher |
American Astronomical Society |
publishDate |
2018 |
url |
https://doi.org/10.3847/2041-8213/aaa4f6 http://hdl.handle.net/10251/142999 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Repositorio Institucional de la Universitat Politècnica de València |
op_relation |
urn:issn:2041-8205 doi:10.3847/2041-8213/aaa4f6 http://hdl.handle.net/10251/142999 |
op_rights |
other |
op_doi |
https://doi.org/10.3847/2041-8213/aaa4f6 |
container_title |
The Astrophysical Journal |
container_volume |
853 |
container_issue |
1 |
container_start_page |
L7 |
_version_ |
1766120643965747200 |