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Phys Rev Lett. 2013 Apr 12;110(15):151105. Epub 2013 Apr 10.

Measurement of the atmospheric νe flux in IceCube.

Aartsen MG1, Abbasi R2, Abdou Y3, Ackermann M4, Adams J5, Aguilar JA6, Ahlers M2, Altmann D7, Auffenberg J2, Bai X8, Baker M2, Barwick SW9, Baum V10, Bay R11, Beattie K12, Beatty JJ13, Bechet S14, Becker Tjus J15, Becker KH16, Bell M17, Benabderrahmane ML4, BenZvi S2, Berdermann J4, Berghaus P4, Berley D18, Bernardini E4, Bernhard A19, Bertrand D14, Besson DZ20, Bindig D16, Bissok M21, Blaufuss E18, Blumenthal J21, Boersma DJ22, Bohaichuk S23, Bohm C24, Bose D25, Böser S26, Botner O27, Brayeur L25, Brown AM5, Bruijn R28, Brunner J4, Buitink S25, Carson M3, Casey J29, Casier M25, Chirkin D2, Christy B18, Clark K17, Clevermann F30, Cohen S28, Cowen DF31, Cruz Silva AH4, Danninger M24, Daughhetee J29, Davis JC32, De Clercq C25, De Ridder S3, Desiati P2, de Vries-Uiterweerd G3, de With M7, DeYoung T17, Díaz-Vélez JC2, Dreyer J15, Dunkman M17, Eagan R17, Eberhardt B10, Eisch J2, Ellsworth RW18, Engdegård O27, Euler S21, Evenson PA8, Fadiran O2, Fazely AR33, Fedynitch A15, Feintzeig J2, Feusels T3, Filimonov K11, Finley C24, Fischer-Wasels T16, Flis S24, Franckowiak A26, Franke R4, Frantzen K30, Fuchs T30, Gaisser TK8, Gallagher J34, Gerhardt L35, Gladstone L2, Glüsenkamp T4, Goldschmidt A12, Golup G25, Goodman JA18, Góra D4, Grant D23, Groß A19, Gurtner M16, Ha C35, Haj Ismail A3, Hallgren A27, Halzen F2, Hanson K14, Heereman D14, Heimann P21, Heinen D21, Helbing K16, Hellauer R18, Hickford S5, Hill GC1, Hoffman KD18, Hoffmann R16, Homeier A26, Hoshina K2, Huelsnitz W18, Hulth PO24, Hultqvist K24, Hussain S8, Ishihara A36, Jacobi E4, Jacobsen J2, Japaridze GS37, Jero K2, Jlelati O3, Kaminsky B4, Kappes A7, Karg T4, Karle A2, Kelley JL2, Kiryluk J38, Kislat F4, Kläs J16, Klein SR35, Köhne JH30, Kohnen G39, Kolanoski H7, Köpke L10, Kopper C2, Kopper S16, Koskinen DJ17, Kowalski M26, Krasberg M2, Kroll G10, Kunnen J25, Kurahashi N2, Kuwabara T8, Labare M25, Landsman H2, Larson MJ40, Lesiak-Bzdak M38, Leute J19, Lünemann J10, Madsen J41, Maruyama R2, Mase K36, Matis HS12, McNally F2, Meagher K18, Merck M2, Mészáros P31, Meures T14, Miarecki S35, Middell E4, Milke N30, Miller J25, Mohrmann L4, Montaruli T6, Morse R2, Nahnhauer R4, Naumann U16, Niederhausen H38, Nowicki SC23, Nygren DR12, Obertacke A16, Odrowski S19, Olivas A18, Olivo M15, O'Murchadha A14, Panknin S26, Paul L21, Pepper JA40, Pérez de los Heros C27, Pfendner C32, Pieloth D30, Pirk N4, Posselt J16, Price PB11, Przybylski GT12, Rädel L21, Rawlins K42, Redl P18, Resconi E19, Rhode W30, Ribordy M28, Richman M18, Riedel B2, Rodrigues JP2, Rott C32, Ruhe T30, Ruzybayev B8, Ryckbosch D3, Saba SM15, Salameh T17, Sander HG10, Santander M2, Sarkar S43, Schatto K10, Scheel M21, Scheriau F30, Schmidt T18, Schmitz M30, Schoenen S21, Schöneberg S15, Schönherr L21, Schönwald A4, Schukraft A21, Schulte L26, Schulz O19, Seckel D8, Seo SH24, Sestayo Y19, Seunarine S41, Sheremata C23, Smith MW17, Soiron M21, Soldin D16, Spiczak GM41, Spiering C4, Stamatikos M32, Stanev T8, Stasik A26, Stezelberger T12, Stokstad RG12, Stößl A4, Strahler EA25, Ström R27, Sullivan GW18, Taavola H27, Taboada I29, Tamburro A8, Ter-Antonyan S33, Tilav S8, Toale PA40, Toscano S2, Usner M26, van der Drift D35, van Eijndhoven N25, Van Overloop A3, van Santen J2, Vehring M21, Voge M26, Vraeghe M3, Walck C24, Waldenmaier T7, Wallraff M21, Wasserman R17, Weaver Ch2, Wellons M2, Wendt C2, Westerhoff S2, Whitehorn N2, Wiebe K10, Wiebusch CH21, Williams DR40, Wissing H18, Wolf M24, Wood TR23, Woschnagg K11, Xu C8, Xu DL40, Xu XW33, Yanez JP4, Yodh G9, Yoshida S36, Zarzhitsky P40, Ziemann J30, Zierke S21, Zilles A21, Zoll M24; IceCube Collaboration.

Author information

1
School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia.
2
Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA.
3
Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium.
4
DESY, D-15735 Zeuthen, Germany.
5
Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.
6
Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland.
7
Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany.
8
Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA.
9
Department of Physics and Astronomy, University of California, Irvine, California 92697, USA.
10
Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany.
11
Department of Physics, University of California, Berkeley, California 94720, USA.
12
Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
13
Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA and Department of Astronomy, The Ohio State University, Columbus, Ohio 43210, USA.
14
Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium.
15
Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany.
16
Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany.
17
Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA.
18
Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
19
T.U. Munich, D-85748 Garching, Germany.
20
Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA.
21
III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany.
22
III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany and Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden.
23
Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada.
24
Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden.
25
Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium.
26
Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany.
27
Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden.
28
Laboratory for High Energy Physics, École Polytechnique Fédérale, CH-1015 Lausanne, Switzerland.
29
School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
30
Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany.
31
Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, Pennsylvania 16802, USA and Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA.
32
Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA.
33
Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA.
34
Department of Astronomy, University of Wisconsin, Madison, Wisconsin 53706, USA.
35
Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
36
Department of Physics, Chiba University, Chiba 263-8522, Japan.
37
CTSPS, Clark-Atlanta University, Atlanta, Georgia 30314, USA.
38
Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA.
39
Université de Mons, 7000 Mons, Belgium.
40
Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA.
41
Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA.
42
Department of Physics and Astronomy, University of Alaska Anchorage, 3211 Providence Drive, Anchorage, Alaska 99508, USA.
43
Department of Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, United Kingdom.

Abstract

We report the first measurement of the atmospheric electron neutrino flux in the energy range between approximately 80 GeV and 6 TeV, using data recorded during the first year of operation of IceCube's DeepCore low-energy extension. Techniques to identify neutrinos interacting within the DeepCore volume and veto muons originating outside the detector are demonstrated. A sample of 1029 events is observed in 281 days of data, of which 496±66(stat)±88(syst) are estimated to be cascade events, including both electron neutrino and neutral current events. The rest of the sample includes residual backgrounds due to atmospheric muons and charged current interactions of atmospheric muon neutrinos. The flux of the atmospheric electron neutrinos is consistent with models of atmospheric neutrinos in this energy range. This constitutes the first observation of electron neutrinos and neutral current interactions in a very large volume neutrino telescope optimized for the TeV energy range.

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