6533b857fe1ef96bd12b4206
RESEARCH PRODUCT
Upper limit on the diffuse flux of UHE tau neutrinos from the Pierre Auger Observatory
The Pierre Auger CollaborationSergio Pastor CarpiTeguayco Pintosubject
Astrophysics::High Energy Astrophysical PhenomenaFísicadescription
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 E2νdNντ/dEν<1.3×10−7 GeV cm−2 s−1 sr−1 in the energy range 2×1017 eV<Eν<2×1019 eV.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-01-01 |