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Title: Search for Ultra High-Energy Neutrinos with AMANDA-II

Abstract

A search for diffuse neutrinos with energies in excess of 10{sup 5} GeV is conducted with AMANDA-II data recorded between 2000 and 2002. Above 10{sup 7} GeV, the Earth is essentially opaque to neutrinos. This fact, combined with the limited overburden of the AMANDA-II detector (roughly 1.5 km), concentrates these ultra high-energy neutrinos at the horizon. The primary background for this analysis is bundles of downgoing, high-energy muons from the interaction of cosmic rays in the atmosphere. No statistically significant excess above the expected background is seen in the data, and an upper limit is set on the diffuse all-flavor neutrino flux of E{sup 2} {Phi}{sub 90%CL} < 2.7 x 10{sup -7} GeV cm{sup -2}s{sup -1} sr{sup -1} valid over the energy range of 2 x 10{sup 5} GeV to 10{sup 9} GeV. A number of models which predict neutrino fluxes from active galactic nuclei are excluded at the 90% confidence level.

Authors:
;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Nuclear Science Division
OSTI Identifier:
934971
Report Number(s):
LBNL-652E
TRN: US0804028
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Astrophysics
Additional Journal Information:
Journal Volume: 675
Country of Publication:
United States
Language:
English
Subject:
79; ENERGY RANGE; MUONS; NEUTRINOS; NUCLEI; OVERBURDEN

Citation Formats

IceCube Collaboration, Klein, Spencer, and Ackermann, M. Search for Ultra High-Energy Neutrinos with AMANDA-II. United States: N. p., 2007. Web.
IceCube Collaboration, Klein, Spencer, & Ackermann, M. Search for Ultra High-Energy Neutrinos with AMANDA-II. United States.
IceCube Collaboration, Klein, Spencer, and Ackermann, M. Mon . "Search for Ultra High-Energy Neutrinos with AMANDA-II". United States. https://www.osti.gov/servlets/purl/934971.
@article{osti_934971,
title = {Search for Ultra High-Energy Neutrinos with AMANDA-II},
author = {IceCube Collaboration and Klein, Spencer and Ackermann, M},
abstractNote = {A search for diffuse neutrinos with energies in excess of 10{sup 5} GeV is conducted with AMANDA-II data recorded between 2000 and 2002. Above 10{sup 7} GeV, the Earth is essentially opaque to neutrinos. This fact, combined with the limited overburden of the AMANDA-II detector (roughly 1.5 km), concentrates these ultra high-energy neutrinos at the horizon. The primary background for this analysis is bundles of downgoing, high-energy muons from the interaction of cosmic rays in the atmosphere. No statistically significant excess above the expected background is seen in the data, and an upper limit is set on the diffuse all-flavor neutrino flux of E{sup 2} {Phi}{sub 90%CL} < 2.7 x 10{sup -7} GeV cm{sup -2}s{sup -1} sr{sup -1} valid over the energy range of 2 x 10{sup 5} GeV to 10{sup 9} GeV. A number of models which predict neutrino fluxes from active galactic nuclei are excluded at the 90% confidence level.},
doi = {},
journal = {Astrophysics},
number = ,
volume = 675,
place = {United States},
year = {2007},
month = {11}
}