INVESTIGADORES
BERTOU Xavier Pierre Louis
artículos
Título:
Upper Limit on the Diffuse Flux of Ultrahigh Energy Tau Neutrinos from the Pierre Auger Observatory
Autor/es:
THE PIERRE AUGER COLLABORATION; J. ABRAHAM,...; X. BERTOU,...; M. ZIOLKOWSKI; (VER PDF PARA LA LISTA COMPLETA)
Revista:
PHYSICAL REVIEW LETTERS
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 Earth´s crust. Tau leptons from nu tau 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 nu tau at EeV energies. Assuming an E^-2 differential energy spectrum the limit set at 90% C.L. is E^2dN/dE< 1.3 x 10^-7 GeV cm^-2 s^-1 sr^-1 in the energy range 2 x 10^17 eV < E < 2 x 10^19 eV.
