Arganda, E. y Arqueros Martínez, Fernando y Blanco Ramos, Francisco y García Pinto, Diego y Ortiz Ramis, Montserrat y Rosado Vélez, Jaime y Vázquez Peñas, José Ramón (2011) Search for ultrahigh energy neutrinos in highly inclined events at the Pierre Auger Observatory. Physical Review D, 84 (12). ISSN 1550-7998
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URL Oficial: http://dx.doi.org/10.1103/PhysRevD.84.122005
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http://journals.aps.org/ | Editorial |
Resumen
The Surface Detector of the Pierre Auger Observatory is sensitive to neutrinos of all flavors above 0.1 EeV. These interact through charged and neutral currents in the atmosphere giving rise to extensive air showers. When interacting deeply in the atmosphere at nearly horizontal incidence, neutrinos can be distinguished from regular hadronic cosmic rays by the broad time structure of their shower signals in the water-Cherenkov detectors. In this paper we present for the first time an analysis based on down-going neutrinos. We describe the search procedure, the possible sources of background, the method to compute the exposure and the associated systematic uncertainties. No candidate neutrinos have been found in data collected from 1 January 2004 to 31 May 2010. Assuming an E-2 differential energy spectrum the limit on the single-flavor neutrino is E(2)dN/dE < 1.74 x 10(-7)GeVcm(-2)s(-1)sr(-1) at 90% C.L. in the energy range 1 x 10(17) eV < E < 1 x 10(20)eV.
Tipo de documento: | Artículo |
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Información Adicional: | © 2011 American Physical Society. |
Palabras clave: | Extensive air showers; Cosmic rays; Upper limit; Surface detector; Photon fraction; Fermi lat; Flux; Performance; Telescope; Origin. |
Materias: | Ciencias > Física > Física nuclear |
Código ID: | 38277 |
Depositado: | 04 Jul 2016 18:19 |
Última Modificación: | 10 Dic 2018 14:58 |
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