INVESTIGADORES
OTERO Lidia Ana
artículos
Título:
Upper limit on the diffuse flux of ultrahigh energy tau neutrinos from the Pierre Auger Observatory
Autor/es:
THE PIERRE AUGER COLLABORATION, ET AL., L. OTERO
Revista:
PHYSICAL REVIEW LETTERS
Editorial:
AMER PHYSICAL SOC
Referencias:
Año: 2008 vol. 100 p. 1 - 7
ISSN:
0031-9007
Resumen:
The surface detector array of the Pierre Auger Observatory is sensitive to Earth-skimming tau neutrinos that interact in Earths crust. Tau leptons from n 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 n at EeV energies. Assuming an differential energy spectrum the limit set at 90% C.L. is dN_=dE < 1:3 X 10_7 GeV cm-2 s-1 sr-1 in the energy range 2 X 1017 eV< < 2 X 1019 eV.
