All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data
[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 thresho...
Published in: | The Astrophysical Journal |
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Main Authors: | , , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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American Astronomical Society
2018
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Online Access: | http://hdl.handle.net/10251/142999 https://doi.org/10.3847/2041-8213/aaa4f6 |
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Politechnical University of Valencia: RiuNet |
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topic |
Astroparticle physics Neutrinos FISICA APLICADA |
spellingShingle |
Astroparticle physics Neutrinos FISICA APLICADA 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 |
Astroparticle physics Neutrinos FISICA APLICADA |
description |
[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 Ministerio de Ciencia e Innovación |
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 |
http://hdl.handle.net/10251/142999 https://doi.org/10.3847/2041-8213/aaa4f6 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
The Astrophysical Journal info:eu-repo/grantAgreement/MINECO//FPA2015-65150-C3-1-P/ES/PARTICIPACION DEL IFIC EN ANTARES, KM3NET-ARCA%2FORCA Y PDG/ info:eu-repo/grantAgreement/ANR//ANR-11-LABX-0060/FR/Origines, Constituants et EVolution de l'Univers/OCEVU/FR/Origines, Constituants et EVolution de l'Univers/OCEVU/ info:eu-repo/grantAgreement/ANR//ANR-11-IDEX-0005/FR/Université Sorbonne Paris Cité/USPC/ info:eu-repo/grantAgreement/ANR//ANR-11-IDEX-0001/FR/INITIATIVE D'EXCELLENCE AIX MARSEILLE UNIVERSITE/Amidex/ info:eu-repo/grantAgreement/ANR//ANR-10-LABX-0023/FR/Earth - Planets - Universe: observation, modeling, transfer/UnivEarthS/ info:eu-repo/grantAgreement/MINECO//FPA2015-65150-C3-3-P/ES/PARTICIPACION DE LA UGR EN ANTARES, KM3NET-ARCA%2FORCA Y PDG/ info:eu-repo/grantAgreement/MICINN//CSD2009-00064/ES/Método de Multimensajeros para la Detección de la Materia Oscura/ info:eu-repo/grantAgreement/MINECO//FPA2015-65150-C3-2-P/ES/PARTICIPACION DE LA UPV EN ANTARES Y KM3NET-ARCA%2FORCA/ https://doi.org/10.3847/2041-8213/aaa4f6 10.1088/0004-637X/809/1/98 10.3847/0004-637X/833/1/3 10.1103/PhysRevLett.113.101101 10.1088/0004-637X/760/1/53 10.1140/epjc/s10052-013-2606-4 10.1088/2041-8205/786/1/L5 10.1016/j.physletb.2016.06.051 10.1016/j.nima.2011.06.103 10.1016/j.physletb.2010.11.070 10.1016/j.nima.2006.09.098 10.1016/j.astropartphys.2010.07.001 10.1140/epjc/s10052-017-4979-2 10.1103/PhysRevD.96.062001 10.3847/1538-3881/aa9709 10.1103/PhysRevD.74.094009 10.1016/j.astropartphys.2005.10.005 10.1093/mnras/182.2.147 10.1016/j.cpc.2008.07.014 10.1103/PhysRevD.67.012002 10.1103/PhysRevD.78.043005 10.1103/PhysRevD.57.3873 10.1051/epjconf/201611602002 10.1088/1742-6596/718/5/052014 10.1016/S0927-6505(02)00240-2 10.1103/PhysRevD.75.043006 10.1103/PhysRevD.74.034018 10.1103/PhysRevD.63.023003 10.1088/1475-7516/2016/12/045 10.1016/j.nima.2012.12.109 urn:issn:2041-8205 http://hdl.handle.net/10251/142999 doi:10.3847/2041-8213/aaa4f6 |
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https://doi.org/10.3847/2041-8213/aaa4f6 |
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ftunivpvalencia:oai:riunet.upv.es:10251/142999 2023-05-15T13:57:27+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 Ministerio de Ciencia e Innovación 2018-01 http://hdl.handle.net/10251/142999 https://doi.org/10.3847/2041-8213/aaa4f6 eng eng American Astronomical Society The Astrophysical Journal info:eu-repo/grantAgreement/MINECO//FPA2015-65150-C3-1-P/ES/PARTICIPACION DEL IFIC EN ANTARES, KM3NET-ARCA%2FORCA Y PDG/ info:eu-repo/grantAgreement/ANR//ANR-11-LABX-0060/FR/Origines, Constituants et EVolution de l'Univers/OCEVU/FR/Origines, Constituants et EVolution de l'Univers/OCEVU/ info:eu-repo/grantAgreement/ANR//ANR-11-IDEX-0005/FR/Université Sorbonne Paris Cité/USPC/ info:eu-repo/grantAgreement/ANR//ANR-11-IDEX-0001/FR/INITIATIVE D'EXCELLENCE AIX MARSEILLE UNIVERSITE/Amidex/ info:eu-repo/grantAgreement/ANR//ANR-10-LABX-0023/FR/Earth - Planets - Universe: observation, modeling, transfer/UnivEarthS/ info:eu-repo/grantAgreement/MINECO//FPA2015-65150-C3-3-P/ES/PARTICIPACION DE LA UGR EN ANTARES, KM3NET-ARCA%2FORCA Y PDG/ info:eu-repo/grantAgreement/MICINN//CSD2009-00064/ES/Método de Multimensajeros para la Detección de la Materia Oscura/ info:eu-repo/grantAgreement/MINECO//FPA2015-65150-C3-2-P/ES/PARTICIPACION DE LA UPV EN ANTARES Y KM3NET-ARCA%2FORCA/ https://doi.org/10.3847/2041-8213/aaa4f6 10.1088/0004-637X/809/1/98 10.3847/0004-637X/833/1/3 10.1103/PhysRevLett.113.101101 10.1088/0004-637X/760/1/53 10.1140/epjc/s10052-013-2606-4 10.1088/2041-8205/786/1/L5 10.1016/j.physletb.2016.06.051 10.1016/j.nima.2011.06.103 10.1016/j.physletb.2010.11.070 10.1016/j.nima.2006.09.098 10.1016/j.astropartphys.2010.07.001 10.1140/epjc/s10052-017-4979-2 10.1103/PhysRevD.96.062001 10.3847/1538-3881/aa9709 10.1103/PhysRevD.74.094009 10.1016/j.astropartphys.2005.10.005 10.1093/mnras/182.2.147 10.1016/j.cpc.2008.07.014 10.1103/PhysRevD.67.012002 10.1103/PhysRevD.78.043005 10.1103/PhysRevD.57.3873 10.1051/epjconf/201611602002 10.1088/1742-6596/718/5/052014 10.1016/S0927-6505(02)00240-2 10.1103/PhysRevD.75.043006 10.1103/PhysRevD.74.034018 10.1103/PhysRevD.63.023003 10.1088/1475-7516/2016/12/045 10.1016/j.nima.2012.12.109 urn:issn:2041-8205 http://hdl.handle.net/10251/142999 doi:10.3847/2041-8213/aaa4f6 http://rightsstatements.org/vocab/InC/1.0/ info:eu-repo/semantics/openAccess Astroparticle physics Neutrinos FISICA APLICADA info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftunivpvalencia https://doi.org/10.3847/2041-8213/aaa4f6 2022-06-12T20:52:19Z [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 Politechnical University of Valencia: RiuNet Antarctic The Antarctic The Astrophysical Journal 853 1 L7 |