English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/15606
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Limit on the diffuse flux of ultrahigh energy tau neutrinos with the surface detector of the Pierre Auger Observatory

AutorAbraham, J.; Pastor, Sergio ; PIERRE AUGER Collaboration; Abreu, P.
Palabras claveHigh Energy Astrophysical Phenomena (astro-ph.HE)
Fecha de publicación19-mar-2008
EditorAmerican Physical Society
CitaciónPhys. Rev. D 79: 102001(2009)
ResumenData collected at the Pierre Auger Observatory are used to establish an upper limit on the diffuse flux of tau neutrinos in the cosmic radiation. Earth-skimming nu(tau) may interact in the Earth's crust and produce a tau lepton by means of charged-current interactions. The tau lepton may emerge from the Earth and decay in the atmosphere to produce a nearly horizontal shower with a typical signature, a persistent electromagnetic component even at very large atmospheric depths. The search procedure to select events induced by tau decays against the background of normal showers induced by cosmic rays is described. The method used to compute the exposure for a detector continuously growing with time is detailed. Systematic uncertainties in the exposure from the detector, the analysis, and the involved physics are discussed. No tau neutrino candidates have been found. For neutrinos in the energy range 2x10(17) eV < E-nu < 2x10(19) eV, assuming a diffuse spectrum of the form E-nu(-2), data collected between 1 January 2004 and 30 April 2008 yield a 90% confidence-level upper limit of E(nu)(2)dN(nu tau)/dE(nu)< 9x10(-8) GeV cm(-2) s(-1) sr(-1).
Descripción19 pages, 9 figures.-- Isi Article Identifier:000266501900007.-- ArXiv pre-print avaible at:http://arxiv.org/abs/0903.3385
Versión del editorhttp://dx.doi.org/10.1103/PhysRevD.79.102001
Aparece en las colecciones: (IFIC) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
0903.3385v1.pdf346,18 kBAdobe PDFVista previa
Mostrar el registro completo

Artículos relacionados:

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.