Improved limit to the diffuse flux of ultrahigh energy neutrinos from the Pierre Auger Observatory
Neutrinos in the cosmic ray flux with energies near 1 EeV and above are detectable with the Surface Detector array (SD) of the Pierre Auger Observatory. We report here on searches through Auger data from 1 January 2004 until 20 June 2013. No neutrino candidates were found, yielding a limit to the di...
Guardado en:
Autores principales: | , , , , , , |
---|---|
Formato: | Articulo |
Lenguaje: | Inglés |
Publicado: |
2015
|
Materias: | |
Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/133047 |
Aporte de: |
id |
I19-R120-10915-133047 |
---|---|
record_format |
dspace |
institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Física Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors Neutrino, muon, pion, and other elementary particles; cosmic rays Cosmic rays |
spellingShingle |
Física Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors Neutrino, muon, pion, and other elementary particles; cosmic rays Cosmic rays Dova, María Teresa Hansen, Patricia María Jarne, Cecilia Gisele Mariazzi, Analisa Gabriela Sciutto, Sergio Juan Wahlberg, Hernán Pablo The Pierre Auger Collaboration Improved limit to the diffuse flux of ultrahigh energy neutrinos from the Pierre Auger Observatory |
topic_facet |
Física Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors Neutrino, muon, pion, and other elementary particles; cosmic rays Cosmic rays |
description |
Neutrinos in the cosmic ray flux with energies near 1 EeV and above are detectable with the Surface Detector array (SD) of the Pierre Auger Observatory. We report here on searches through Auger data from 1 January 2004 until 20 June 2013. No neutrino candidates were found, yielding a limit to the diffuse flux of ultrahigh energy neutrinos that challenges the Waxman-Bahcall bound predictions. Neutrino identification is attempted using the broad time structure of the signals expected in the SD stations, and is efficiently done for neutrinos of all flavors interacting in the atmosphere at large zenith angles, as well as for "Earth-skimming" neutrino interactions in the case of tau neutrinos. In this paper the searches for downward-going neutrinos in the zenith angle bins 60°-75°and 75°-90°as well as for upward-going neutrinos, are combined to give a single limit. The 90% C.L. single-flavor limit to the diffuse flux of ultrahigh energy neutrinos with an E⁻² spectrum in the energy range 1.0 × 10¹⁷ eV-2.5 × 10¹⁹ eV is E²<sub>ν</sub>dN<sub>ν</sub>/dE<sub>ν</sub> < 6.4 × 10⁻⁹ GeVcm⁻² s⁻¹ sr⁻¹. |
format |
Articulo Articulo |
author |
Dova, María Teresa Hansen, Patricia María Jarne, Cecilia Gisele Mariazzi, Analisa Gabriela Sciutto, Sergio Juan Wahlberg, Hernán Pablo The Pierre Auger Collaboration |
author_facet |
Dova, María Teresa Hansen, Patricia María Jarne, Cecilia Gisele Mariazzi, Analisa Gabriela Sciutto, Sergio Juan Wahlberg, Hernán Pablo The Pierre Auger Collaboration |
author_sort |
Dova, María Teresa |
title |
Improved limit to the diffuse flux of ultrahigh energy neutrinos from the Pierre Auger Observatory |
title_short |
Improved limit to the diffuse flux of ultrahigh energy neutrinos from the Pierre Auger Observatory |
title_full |
Improved limit to the diffuse flux of ultrahigh energy neutrinos from the Pierre Auger Observatory |
title_fullStr |
Improved limit to the diffuse flux of ultrahigh energy neutrinos from the Pierre Auger Observatory |
title_full_unstemmed |
Improved limit to the diffuse flux of ultrahigh energy neutrinos from the Pierre Auger Observatory |
title_sort |
improved limit to the diffuse flux of ultrahigh energy neutrinos from the pierre auger observatory |
publishDate |
2015 |
url |
http://sedici.unlp.edu.ar/handle/10915/133047 |
work_keys_str_mv |
AT dovamariateresa improvedlimittothediffusefluxofultrahighenergyneutrinosfromthepierreaugerobservatory AT hansenpatriciamaria improvedlimittothediffusefluxofultrahighenergyneutrinosfromthepierreaugerobservatory AT jarnececiliagisele improvedlimittothediffusefluxofultrahighenergyneutrinosfromthepierreaugerobservatory AT mariazzianalisagabriela improvedlimittothediffusefluxofultrahighenergyneutrinosfromthepierreaugerobservatory AT sciuttosergiojuan improvedlimittothediffusefluxofultrahighenergyneutrinosfromthepierreaugerobservatory AT wahlberghernanpablo improvedlimittothediffusefluxofultrahighenergyneutrinosfromthepierreaugerobservatory AT thepierreaugercollaboration improvedlimittothediffusefluxofultrahighenergyneutrinosfromthepierreaugerobservatory |
bdutipo_str |
Repositorios |
_version_ |
1764820454714900480 |