Upper Limit on the Diffuse Flux of Ultrahigh Energy Tau Neutrinos from the Pierre Auger Observatory
Document Type
Article
Publication Date
5-27-2008
Abstract
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 January2004 and 31 August 2007 are used to place an upper limit on the diffuse flux of ντ at EeV energies. Assuming an Eν-2 differential energy spectrum the limit set at 90% C.L. is Eν2dNντ/dEν < 1.3×10-7GeVcm-2s-1sr-1 in the energy range 2×1017eV < Eν < 2×1019eV. © 2008 The American Physical Society.
Publication Title
Physical Review Letters
Recommended Citation
Abraham, J.,
Abreu, P.,
Aglietta, M.,
Aguirre, C.,
Allard, D.,
Allekotte, I.,
Allen, J.,
Allison, P.,
Alvarez-Muñiz, J.,
Ambrosio, M.,
Anchordoqui, L.,
Andringa, S.,
Anzalone, A.,
Aramo, C.,
Argirò, S.,
Arisaka, K.,
Armengaud, E.,
Arneodo, F.,
Arqueros, F.,
Asch, T.,
Asorey, H.,
Assis, P.,
Atulugama, B.,
Aublin, J.,
Ave, M.,
Avila, G.,
Bäcker, T.,
Badagnani, D.,
Barbosa, A.,
Barnhill, D.,
Barroso, S.,
&
Bauleo, P.
(2008).
Upper Limit on the Diffuse Flux of Ultrahigh Energy Tau Neutrinos from the Pierre Auger Observatory.
Physical Review Letters,
100(21).
http://doi.org/10.1103/PhysRevLett.100.211101
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/10083