The first search for extremely-high energy cosmogenic neutrinos with the IceCube Neutrino Observatory

Details The first search for extremely-high energy cosmogenic neutrinos with the IceCube Neutrino Observatory The first search for extremely-high energy cosmogenic neutrinos with the IceCube Neutrino Observatory

2010-09-08

arxiv.org/abs/1009.1442v1

Phys.Rev.D82:072003,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

11 pages, 6 figures, 4 tables, accepted for publication in Physical Review D

Scientific paper

10.1103/PhysRevD.82.072003

We report on the results of the search for extremely-high energy (EHE) neutrinos with energies above $10^7$ GeV obtained with the partially ($\sim$30%) constructed IceCube in 2007. From the absence of signal events in the sample of 242.1 days of effective livetime, we derive a 90% C.L. model independent differential upper limit based on the number of signal events per energy decade at $E^2 \phi_{\nu_e+\nu_\mu+\nu_\tau}\simeq 1.4 \times 10^{-6}$ GeV cm$^{-2}$ sec$^{-1}$ sr$^{-1}$ for neutrinos in the energy range from $3\times10^7$ to $3\times10^9$ GeV.

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