Upper limit on the diffuse flux of ultrahigh energy tau neutrinos from the Pierre Auger Observatory

The surface detector array of the Pierre Auger Observatory is sensitive to Earth-skimming tau neutrinos that interact in Earth’s crust. Tau leptons from ντ charged-current interactions can emerge and decay in the atmosphere to produce a nearly horizontal shower with a significant electromagnetic com...

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Guardado en:
Detalles Bibliográficos
Autores principales: Badagnani, Daniel Omar, Dova, María Teresa, Epele, Luis Nicolás, Gómez Albarracín, Flavia Alejandra, Grunfeld, Christian Martín, Manceñido, Mónica E., Mariazzi, Analisa Gabriela, Moreno, Juan Cruz, Sciutto, Sergio Juan, Veiga, Alejandro Luis, Wahlberg, Hernán Pablo, The Pierre Auger Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2008
Materias:
Ciencias Exactas
Física
Electromagnetismo
Radiación cósmica
Partículas Elementales
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79311
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:The surface detector array of the Pierre Auger Observatory is sensitive to Earth-skimming tau neutrinos that interact in Earth’s crust. Tau leptons from ντ charged-current interactions can emerge and decay in the atmosphere to produce a nearly horizontal shower with a significant electromagnetic component. The data collected between 1 January 2004 and 31 August 2007 are used to place an upper limit on the diffuse flux of ντ at EeV energies. Assuming an E−2ν differential energy spectrum the limit set at 90% C.L. is E2νdNντdEν<1.3×10−7  GeV cm−2 s−1 sr−1 in the energy range 2×1017 eV<E<2×1019  eV.

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