Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos
The surface detector array of the Pierre Auger Observatory can detect neutrinos with energy Eν between 10<sup>17</sup> eV and 10<sup>20</sup> eV from point-like sources across the sky south of +55º and north of −65º declinations. A search has been performed for highly incline...
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| Autores principales: | , , , , , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2012
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/80845 |
| Aporte de: |
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I19-R120-10915-80845 |
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dspace |
| institution |
Universidad Nacional de La Plata |
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I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Exactas Física Astroparticle physics Radiación Cósmica neutrinos Telescopios |
| spellingShingle |
Ciencias Exactas Física Astroparticle physics Radiación Cósmica neutrinos Telescopios Arganda Carreras, Ernesto Dova, María Teresa Gómez Albarracín, Flavia Alejandra Hansen, Patricia María Jarne, Cecilia Gisele Mariazzi, Analisa Gabriela Moreno, Juan Cruz Sciutto, Sergio Juan Wahlberg, Hernán Pablo The Pierre Auger Collaboration Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos |
| topic_facet |
Ciencias Exactas Física Astroparticle physics Radiación Cósmica neutrinos Telescopios |
| description |
The surface detector array of the Pierre Auger Observatory can detect neutrinos with energy Eν between 10<sup>17</sup> eV and 10<sup>20</sup> eV from point-like sources across the sky south of +55º and north of −65º declinations. A search has been performed for highly inclined extensive air showers produced by the interaction of neutrinos of all flavors in the atmosphere (downward-going neutrinos), and by the decay of tau leptons originating from tau neutrino interactions in Earth’s crust (Earth-skimming neutrinos). No candidate neutrinos have been found in data up to 2010 May 31. This corresponds to an equivalent exposure of ∼3.5 years of a full surface detector array for the Earth-skimming channel and ∼2 years for the downward-going channel. An improved upper limit on the diffuse flux of tau neutrinos has been derived. Upper limits on the neutrino flux from point-like sources have been derived as a function of the source declination. Assuming a differential neutrino flux k<sub>PS</sub> · E<sup>−2</sup><sub>ν</sub> from a point-like source, 90% confidence level upper limits for k<sub>PS</sub> at the level of ≈5×10<sup>−7</sup> and 2.5×10<sup>−6</sup> GeV cm<sup>−2</sup> s<sup>−1</sup> have been obtained over a broad range of declinations from the searches for Earth-skimming and downward-going neutrinos, respectively. |
| format |
Articulo Articulo |
| author |
Arganda Carreras, Ernesto Dova, María Teresa Gómez Albarracín, Flavia Alejandra Hansen, Patricia María Jarne, Cecilia Gisele Mariazzi, Analisa Gabriela Moreno, Juan Cruz Sciutto, Sergio Juan Wahlberg, Hernán Pablo The Pierre Auger Collaboration |
| author_facet |
Arganda Carreras, Ernesto Dova, María Teresa Gómez Albarracín, Flavia Alejandra Hansen, Patricia María Jarne, Cecilia Gisele Mariazzi, Analisa Gabriela Moreno, Juan Cruz Sciutto, Sergio Juan Wahlberg, Hernán Pablo The Pierre Auger Collaboration |
| author_sort |
Arganda Carreras, Ernesto |
| title |
Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos |
| title_short |
Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos |
| title_full |
Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos |
| title_fullStr |
Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos |
| title_full_unstemmed |
Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos |
| title_sort |
search for point-like sources of ultra-high energy neutrinos at the pierre auger observatory and improved limit on the diffuse flux of tau neutrinos |
| publishDate |
2012 |
| url |
http://sedici.unlp.edu.ar/handle/10915/80845 |
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