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@ARTICLE{Collaboration:166432,
author = {Aartsen, M. G. and Abbasi, R. and Ackermann, Markus and
Adams, J. and Aguilar, J. A. and Ahlers, M. and Altmann, D.
and Arguelles, C. and Arlen, T. C. and Auffenberg, J. and
Bai, X. and Baker, M. and Barwick, S. W. and Baum, V. and
Bay, R. and Beatty, J. J. and Tjus, J. Becker and Becker, K.
-H. and BenZvi, S. and Berghaus, P. and Berley, D. and
Bernardini, E. and Bernhard, A. and Besson, D. Z. and
Binder, G. and Bindig, D. and Bissok, M. and Blaufuss, E.
and Blumenthal, J. and Boersma, D. J. and Bohm, C. and Bose,
D. and Böser, S. and Botner, O. and Brayeur, L. and Bretz,
H. -P. and Brown, A. M. and Bruijn, R. and Casey, J. and
Casier, M. and Chirkin, D. and Christov, A. and Christy, B.
and Clark, K. and Classen, L. and Clevermann, F. and
Coenders, S. and Cohen, S. and Cowen, D. F. and Silva, A. H.
Cruz and Danninger, M. and Daughhetee, J. and Davis, J. C.
and Day, M. and de André, J. P. A. M. and De Clercq, C. and
De Ridder, S. and Desiati, P. and de Vries, K. D. and de
With, M. and DeYoung, T. and Díaz-Vélez, J. C. and
Dunkman, M. and Eagan, R. and Eberhardt, B. and Eichmann, B.
and Eisch, J. and Euler, S. and Evenson, P. A. and Fadiran,
O. and Fazely, A. R. and Fedynitch, A. and Feintzeig, J. and
Feusels, T. and Filimonov, K. and Finley, C. and
Fischer-Wasels, T. and Flis, S. and Franckowiak, A. and
Frantzen, K. and Fuchs, T. and Gaisser, T. K. and Gallagher,
J. and Gerhardt, L. and Gladstone, L. and Glüsenkamp, T.
and Goldschmidt, A. and Golup, G. and Gonzalez, J. G. and
Goodman, J. A. and Góra, D. and Grandmont, D. T. and Grant,
D. and Gretskov, P. and Groh, J. C. and Groß, A. and Ha, C.
and Ismail, A. Haj and Hallen, P. and Hallgren, A. and
Halzen, F. and Hanson, K. and Hebecker, D. and Heereman, D.
and Heinen, D. and Helbing, K. and Hellauer, R. and
Hickford, S. and Hill, G. C. and Hoffman, K. D. and
Hoffmann, R. and Homeier, A. and Hoshina, K. and Huang, F.
and Huelsnitz, W. and Hulth, P. O. and Hultqvist, K. and
Hussain, S. and Ishihara, A. and Jacobi, E. and Jacobsen, J.
and Jagielski, K. and Japaridze, G. S. and Jero, K. and
Jlelati, O. and Kaminsky, B. and Kappes, A. and Karg, T. and
Karle, A. and Kauer, M. and Kelley, J. L. and Kiryluk, J.
and Kläs, J. and Klein, S. R. and Köhne, J. -H. and
Kohnen, G. and Kolanoski, H. and Köpke, L. and Kopper, C.
and Kopper, S. and Koskinen, D. J. and Kowalski, M. and
Krasberg, M. and Kriesten, A. and Krings, K. and Kroll, G.
and Kunnen, J. and Kurahashi, N. and Kuwabara, T. and
Labare, M. and Landsman, H. and Larson, M. J. and
Lesiak-Bzdak, M. and Leuermann, M. and Leute, J. and
Lünemann, J. and Macías, O. and Madsen, J. and Maggi, G.
and Maruyama, R. and Mase, K. and Matis, H. S. and McNally,
F. and Meagher, K. and Merck, M. and Meures, T. and
Miarecki, S. and Middell, E. and Milke, N. and Miller, J.
and Mohrmann, L. and Montaruli, T. and Morse, R. and
Nahnhauer, R. and Naumann, U. and Niederhausen, H. and
Nowicki, S. C. and Nygren, D. R. and Obertacke, A. and
Odrowski, S. and Olivas, A. and Omairat, A. and O'Murchadha,
A. and Palczewski, T. and Paul, L. and Pepper, J. A. and
Heros, C. Pérez de los and Pfendner, C. and Pieloth, D. and
Pinat, E. and Posselt, J. and Price, P. B. and Przybylski,
G. T. and Quinnan, M. and Rädel, L. and Rameez, M. and
Rawlins, K. and Redl, P. and Reimann, R. and Resconi, E. and
Rhode, W. and Ribordy, M. and Richman, M. and Riedel, B. and
Robertson, S. and Rodrigues, J. P. and Rott, C. and Ruhe, T.
and Ruzybayev, B. and Ryckbosch, D. and Saba, S. M. and
Sander, H. -G. and Santander, M. and Sarkar, S. and Schatto,
K. and Scheriau, F. and Schmidt, T. and Schmitz, M. and
Schoenen, S. and Schöneberg, S. and Schönwald, A. and
Schukraft, A. and Schulte, L. and Schulz, O. and Seckel, D.
and Sestayo, Y. and Seunarine, S. and Shanidze, R. and
Sheremata, C. and Smith, M. W. E. and Soldin, D. and
Spiczak, G. M. and Spiering, C. and Stamatikos, M. and
Stanev, T. and Stanisha, N. A. and Stasik, A. and
Stezelberger, T. and Stokstad, R. G. and Stößl, A. and
Strahler, E. A. and Ström, R. and Strotjohann, N. L. and
Sullivan, G. W. and Taavola, H. and Taboada, I. and
Tamburro, A. and Tepe, A. and Ter-Antonyan, S. and Tešić,
G. and Tilav, S. and Toale, P. A. and Tobin, M. N. and
Toscano, S. and Tselengidou, M. and Unger, E. and Usner, M.
and Vallecorsa, S. and van Eijndhoven, N. and Van Overloop,
A. and van Santen, J. and Vehring, M. and Voge, M. and
Vraeghe, M. and Walck, C. and Waldenmaier, T. and Wallraff,
M. and Weaver, Ch. and Wellons, M. and Wendt, C. and
Westerhoff, S. and Whelan, B. and Whitehorn, N. and Wiebe,
K. and Wiebusch, C. H. and Williams, D. R. and Wissing, H.
and Wolf, M. and Wood, T. R. and Woschnagg, K. and Xu, D. L.
and Xu, X. W. and Yanez, J. P. and Yodh, G. and Yoshida, S.
and Zarzhitsky, P. and Ziemann, J. and Zierke, S. and Zoll,
M.},
collaboration = {{IceCube Collaboration}},
title = {{S}earch for neutrino-induced particle showers with
{I}ce{C}ube-40},
reportid = {DESY-2014-01336, arXiv:1312.0104},
year = {2013},
note = {submitted to Phys. Rev. D},
abstract = {We report on the search for neutrino-induced
particle-showers, so-called cascades, in the IceCube-40
detector. The data for this search was collected between
April 2008 and May 2009 when the first 40 IceCube strings
were deployed and operational. Three complementary searches
were performed, each optimized for different energy regimes.
The analysis with the lowest energy threshold (2 TeV)
targeted atmospheric neutrinos. A total of 67 events were
found, consistent with the expectation of 41 atmospheric
muons and 30 atmospheric neutrino events. The two other
analyses targeted a harder, astrophysical neutrino flux. The
analysis with an intermediate threshold of 25 TeV lead to
the observation of 14 cascade-like events, again consistent
with the prediction of 3.0 atmospheric neutrino and 7.7
atmospheric muon events. We hence set an upper limit of $E^2
\Phi_{lim} \leq 7.46\times10^{-8}\,\mathrm{GeV sr^{-1}
s^{-1} cm^{-2}}$ (90\% C.L.) on the diffuse flux from
astrophysical neutrinos of all neutrino flavors, applicable
to the energy range 25 TeV to 5 PeV, assuming an
$E_{\nu}^{-2}$ spectrum and a neutrino flavor ratio of 1:1:1
at the Earth. The third analysis utilized a larger and
optimized sample of atmospheric muon background simulation,
leading to a higher energy threshold of 100 TeV. Three
events were found over a background prediction of 0.04
atmospheric muon events and 0.21 events from the flux of
conventional and prompt atmospheric neutrinos. Including
systematic errors this corresponds to a $2.7\sigma$ excess
with respect to the background-only hypothesis. Our
observation of neutrino event candidates above 100 TeV
complements IceCube's recently observed evidence for
high-energy astrophysical neutrinos.},
cin = {ZEU-EXP/AT},
cid = {$I:(DE-H253)ZEU-EXP_AT-20120731$},
pnm = {522 - High-energy neutrino astrophysics (POF2-522)},
pid = {G:(DE-HGF)POF2-522},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)25 / PUB:(DE-HGF)15},
eprint = {1312.0104},
howpublished = {arXiv:1312.0104},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:1312.0104;\%\%$},
url = {https://bib-pubdb1.desy.de/record/166432},
}
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